DC generator without reversing

Abstract

A DC generator without reversing, belonging to the electromechanical field. The main elements are: ring-shaped magnets of which the magnetic field direction is perpendicular to the ring surfaces or along the radial direction of the ring surfaces, a magnetic conductive plate or magnetic conductive tube which is made of high permeability magnetic material, provided with holes through which a conducting wire can pass, has a surface completely insulated from the rest part, and has high resistance or is insulated, a conducting wire coil provided with an insulation layer on the surface and twined around the conducting wire frame through the holes of the magnetic conductive plate, and drive wheels at the same angular velocity; the conducting wire, and the magnetic conductive plate or magnetic conductive tube are installed between the magnets or one the end surfaces, and the two ends of the conducting wire are directly connected to the wiring posts or are connected by an electric brush; driven by power, the magnets and the conducting wire perform relative motion which makes the conducting wire cut magnetic lines of force, and DC electromotive force is generated; or the magnetic conductive plate or magnetic conductive tube is not used, but two groups of serial conducting wires or conducting strips move in opposite directions or perform relative motion of cutting the magnetic line of force between the magnets having opposite magnetic field directions. Such generator generates DC electromotive force without reversing; and has simple structure, low cost and long life.

Claims

1. A DC generator without reversing, comprising: ring-shaped magnets, a magnetic conductive plate which is made of high permeability magnetic material, provided with through holes through which a conducting wire can pass and has a surface completely insulated from the rest part, a conducting wire of which the surface is provided with an insulation layer, drive wheels, a center shaft A.sub.M and a relative slide device; for each of two identical ring-shaped magnets M.sub.A and M.sub.B, the magnetic field direction thereof is perpendicular to the ring surface, the vertical cross section of the ring is rectangular, the thickness, inner ring radius and outer ring radius are H.sub.m, r.sub.M and R.sub.M respectively, N and S magnetic poles of M.sub.A and M.sub.B are opposite, the distance is d.sub.AB, the vertical center lines of ring surfaces of the M.sub.A and M.sub.B coincide, and the M.sub.A and M.sub.B are fixed onto a rotating arm of the center shaft A.sub.M; a shape of the magnetic conductive plate F.sub.L is identical to the ring surface of the ring-shaped magnets, the thickness is h.sub.F, n through holes are provided in a radial direction of the F.sub.L; ring plates or frames P.sub.F which are made of non-magnetic conductive insulation material are fixed on the two opposite ring surfaces of the magnetic conductive plate F.sub.L having a shape identical to the ring surface of F.sub.L and a thickness of h.sub.N; F.sub.L and P.sub.F are combined into a whole F.sub.L-P.sub.F; the conducting wire passes through the n through holes of the magnetic conductive plate and twines around the F.sub.L-P.sub.F; the F.sub.L-P.sub.F is installed between the magnets M.sub.A and M.sub.B so that the vertical center line of F.sub.L-P.sub.F coincides with that of the ring surface of the magnets M.sub.A and M.sub.B; and F.sub.L-P.sub.F is fixed onto a bracket P.sub.C, and the P.sub.C is fixed onto a bottom plate P of the generator; and when the center shaft A.sub.M is driven to rotate by an input power, the magnet rotates, but a coil is stationary, so that DC electromotive force is generated without electric brush.

2. The DC generator of claim 1, wherein a material for the magnetic conductive plate is selected from a group consisting of pure iron, permeability alloy, silicon steel sheet, ferrite, NdFeB alloy or iron alloy.

3. The DC generator of claim 1, wherein conductors are conducting strips having a same shape with to the ring surfaces of the magnets, and the conducting strips are connected by conducting wires in magnetic conductive tubes; a conductor loop is formed by the n conducting strips D.sub.j, j=1, 2 . . . n which are identical to the ring surfaces of the magnets, are provided with insulation films on the surfaces and have the thickness of h.sub.D, and n conducting wires which connect the conducting strips, are encapsulated in the magnetic conductive tube, and are provided with insulation films on the surfaces; the vertical center lines of the conducting strips coincide with the vertical center lines of the magnets, and are uniformly arranged between the magnets M.sub.A and M.sub.B; an outer circle edge of a first conducting strip is connected with a first wiring post; an inner circle edge thereof is connected with the outer circle edge of a second conducting strip by the conducting wire; the inner circle edge of the second conducting strip is connected with the outer circle edge of the third conducting strip by the conducting wire, and so on, the inner circle edge of the (n1).sup.th conducting strip is connected with the outer circle edge of the n.sup.th conducting strip by the conducting wire passing through the (n1).sup.th magnetic conductive tube, and the inner circle edge of the n.sup.th conducting strip is connected with a second wiring post by the conducting wire passing through a n.sup.th magnetic conductive tube; and the magnets M.sub.A and M.sub.B are fixed onto a rotating arm of the center shaft A.sub.M, and when A.sub.M rotates, the magnets rotate, such that electromotive force is generated without electric brush.

4. The DC generator of claim 1, wherein the ring-shaped magnets are stationary, and the ring-shaped conducting strips perpendicular to the magnetic field rotate in the opposite direction; The M.sub.A and M.sub.B are fixed onto a bracket thereof; a conductor loop consists of 2n conducting strips D.sub.j, j=1, 2 . . . 2n having a same shape with the ring surfaces of the magnets, and conducting wires which connect these conducting strips; the vertical center lines of the conducting strips coincide with the vertical center lines of the magnets and are uniformly arranged between the magnets M.sub.A and M.sub.B, the distance between every two vertical center lines is d.sub.D, an outer circle edge of the first conducting strip is connected with a first conducting slip ring by a conducting brush, an inner circle edge thereof is connected with the inner circle edge of the second conducting strip by a conducting brush, the outer circle edge of the second conducting strip is connected with the outer circle edge of the third conducting strip by a conducting brush, the inner circle edge of the third conducting strip is connected with the inner circle edge of the fourth conducting strip by a conducting brush, and so on, the inner circle edge of the (2n1).sup.th conducting strip is connected with the inner circle edge of the 2n.sup.th conducting strip by a conducting brush, and the outer circle edge of the 2n.sup.th is connected with a second conducting slip ring by a conducting brush; n rotating arms L.sub.i, i=1, 3 . . . (2n1) spaced at equal distance are fixed onto the center shaft A.sub.M, n 2.sup.nd, 4.sup.th . . . 2n.sup.th bearings having equal spacing and sleeved on A.sub.M are fixed between the rotating arms L.sub.i, L.sub.i+2 of A.sub.M and below the (2n1).sup.th rotating arm; insulated rotating arms L.sub.j%, j=2, 4 . . . 2n are fixed onto the bearings; all the distances from the ends of the rotating arms to the axis of A.sub.M are equal; the 1.sup.st, 3.sup.rd, (2n1).sup.th conducting strips are fixed at the end of the insulated rotating arm L.sub.i, and the 2.sup.rd, 4.sup.th . . . 2n.sup.th conducting strips are fixed at the end of the insulated rotating arm L.sub.j%; and when driven by power, the 1.sup.st, 3.sup.rd, (2n1).sup.th conducting strips rotate in the opposite direction to the 2.sup.nd, 4.sup.th . . . 2n.sup.th conducting strips, and electromotive force is generated between the first wiring post and the second wiring post.

5. The DC generator of claim 1, wherein m magnets are arranged on the center shaft A.sub.M at equal distance such that vertical center lines of ring surfaces of the magnets coincide and magnetic field directions are identical; magnetic conductive plates F.sub.M0, F.sub.Mm having a same shape with the magnets in ring surface and identical to same in state of motion are respectively provided on the outer sides of the M.sub.1, M.sub.m, and ring plates P.sub.N are provided onto the magnetic conductive plates F.sub.M0, F.sub.Mm; a conducting wire twining inside a magnetic conductive plate and outside a corresponding ring plate P.sub.N and a wiring post are fixed between two adjacent magnets; and circuits between adjacent magnets are connected in series by a conducting wire in a magnetic conductive tube; in this way, the total electromotive force is the sum of these interval electromotive force.

6. The DC generator of claim 1, wherein the magnets are ring-shaped, the magnetic field is in the radial direction; the ring-shaped magnet rotates around the center shaft, and the conducting wire is stationary without electric brush; the magnet group of such generator consists of inner and outer ring-shaped magnets M.sub.O and M.sub.I each having ring shape, axial length of L.sub.M, magnetic field in radial direction and same direction; the radius of the small ring of the inner ring magnet M.sub.I is r.sub.I, the radius of the large ring thereof is r.sub.O=r.sub.I+b.sub.I, where b.sub.I is the width of M.sub.I, the radius of the small ring of the outer ring magnet M.sub.O is R.sub.I, the radius of the large ring thereof is R.sub.O=R.sub.I+b.sub.O, where b.sub.O is the width of M.sub.O; M.sub.I is in M.sub.O, corresponding end surfaces of M.sub.I and M.sub.O are on the same plane, perpendicular bisectors of ring surfaces coincide, the radial spacing is S.sub.M=R.sub.Ir.sub.O, and N, S magnetic poles of the two are opposite; one end surface of the M.sub.I and M.sub.O magnet group is A and the other end surface thereof is B, the end surface of A is fixed onto a rotating arm, A.sub.M is driven to rotate by power, and M.sub.I and M.sub.O synchronously rotate along with A.sub.M; a magnetic conductive cylinder F.sub.O, which has length of L.sub.F=L.sub.M, wall thickness of W.sub.F, inner radius of r.sub.F>r.sub.O, and outer radius of R.sub.F=r.sub.F+W.sub.F<R.sub.I is provided; a plurality of holes H.sub.i, i=1, 2 . . . n are uniformly provided in the wall of the cylinder F.sub.O along the axial direction; cylinders or cylindrical frames C.sub.F which are made of non-magnetic conductive insulation material and have the thickness of h.sub.O are respectively fixed onto the inner and outer ring surfaces of the magnetic conductive cylinder F.sub.O, F.sub.O and C.sub.F are combined into a whole F.sub.O-C.sub.F, a conducting wire passes through these holes and twines around F.sub.O-C.sub.F; one end of the conducting wire is fixed onto the first wiring post of an end of A, and the other end is fixed onto the second wiring post at the end of A; F.sub.O-C.sub.F around which the conducting wire twines is installed between the magnets M.sub.I and M.sub.O, so that two end surfaces of the cylinder and two end surfaces of the magnet are on the same plane respectively and F.sub.O-C.sub.F can freely rotate between M.sub.I and M.sub.O, and then F.sub.O-C.sub.F is fixed onto a corresponding bracket which is fixed onto the bottom plate P; and when the magnet is driven to rotate by power, and DC electromotive force is generated at both ends of the conducting wire.

7. The DC generator of claim 6, wherein a ring-shaped chute O.sub.I with a downward opening is fixed onto the inner ring surface of the magnet M.sub.I, where the outer radius of O.sub.I is: r.sub.=r.sub.I, the inner radius is: r.sub.O=r.sub.Ib.sub.O, b.sub.O is the width of O.sub.I, and the radius of circle corresponding to the midpoint of the cross section of O.sub.I is: r.sub.OM=r.sub.Ib.sub.a/2; the ring-shaped conducting wire bracket F.sub.C surrounds the magnet M.sub.I, and F.sub.C consists of inner and outer ring plates, a bottom frame and a top frame; the inner ring plate is a magnetic conductive plate F.sub.M, and F.sub.M is provided therein with a plurality of holes which are parallel to the axial direction thereof and through which conducting wires can pass; the outer radius of F.sub.M is: r.sub.FMD=r.sub.O.sub.FMD, where .sub.FMD is the clearance between F.sub.M and the chute O.sub.I, the inner radius is: r.sub.FM=r.sub.Ow.sub.FM, where w.sub.FM is the thickness of F.sub.M; the inner radius and outer radius of the outer ring plate of F.sub.C are r.sub.FO=r.sub.O+.sub.FM and r.sub.FOO=r.sub.FO+w.sub.FO<R.sub.I respectively, where w.sub.FO is the thickness of the outer ring of F.sub.C, the length of F.sub.C is: L.sub.F=L.sub.M+2w.sub.F+2.sub.FM, where w.sub.F is the thickness of the top frame and the bottom frame of F.sub.C, and .sub.FM is the clearance between F.sub.C and the magnet M.sub.I; the conducting wire passes through the holes of the magnetic conductive plate F.sub.M and twines around the conducting wire bracket F.sub.C, and the two ends of the conducting wire are respectively connected to a first slip ring and a second slip ring by electric brushes; three, four or six identical rotating arms perpendicular to the center shaft are symmetrically fixed onto the center shaft A.sub.M; these rotating arms are fixed with a bracket F.sub.C and a chute O.sub.I% having a midpoint of the cross section on the circle with the radius of r.sub.AM=r.sub.OM, having inner radius and outer radius of r.sub.AM=r.sub.FMD, r.sub.AMD=r.sub.I.sub.FMD respectively, having an upward opening and matching the chute O.sub.I O.sub.I%, O.sub.I% is in F.sub.C and is fixed onto the outer ring surface of the magnetic conductive plate F.sub.M, balls are arranged between the chutes O.sub.I and O.sub.I%, and O.sub.I is buckled on O.sub.I%; O.sub.I and the magnet M.sub.I carried thereby can freely rotate on O.sub.I% around A.sub.M; the center shaft A.sub.M of the magnet is also a center shaft of F.sub.C; the balls are placed in the chute O.sub.I%, the magnet M.sub.I is inserted in F.sub.C, the chute O.sub.I fixed onto M.sub.I is made to fall on these balls, and the top frame is fixed onto F.sub.C; the conducting wire is made to pass through the top frame to the magnetic conductive plate F.sub.M of the inner ring of F.sub.C from the point A on the outer side of the top of F.sub.C, pass through the small holes of F.sub.M to the bottom of F.sub.C, pass through the bottom frame to the outer ring surface of F.sub.C, pass through the outer ring surface of F.sub.C, and return to the point adjacent to the point A on the outer side of the top of F.sub.C; the process is repeated for many times, the conducting wire is fully arranged on the outer ring surface of F.sub.C, and then all parts of the conducting wire are respectively fixed onto various parts in F.sub.C; and the center shaft A.sub.M is driven to rotate by power, F.sub.C simultaneously rotates along with same, the magnet M.sub.I is stationary, the conducting wire which twines around F.sub.C and the ring rotates in the single direction of cutting the magnetic line of force along with same, the conducting wire passing through the small holes formed in the high permeability material from the inner ring does not cut the magnetic line of force, and DC electromotive force is generated at the two ends of the conducting wire.

8. The DC generator of claim 7, wherein a position of the conducting wire bracket F.sub.C is fixed and the F.sub.C is disconnected with the center shaft A.sub.M; the magnet rotates along with the A.sub.M; three, four or six identical support posts Z parallel to A.sub.M are uniformly and symmetrically fixed onto the circle taking the axis of A.sub.M as a center of a circle and taking r.sub.a=r.sub.I+b.sub.I/2 as a radius on the bracket P.sub.C of the bottom plane P of the generator, the support posts Z pass through the bottom frame of the conducting wire bracket F.sub.C and F.sub.C is fixed onto the support posts, a chute O.sub.I% having a cross section in small semicircle shape, an upward opening and filled with balls is fixed onto the top of each of the support posts Z; a chute O.sub.I with a downward opening matching the chute O.sub.I% on the support posts Z is fixed onto the circle taking r.sub.a=r.sub.I+b.sub.I/2 as a radius on the bottom surface of M.sub.I, and O.sub.I is buckled on O.sub.I%; in this way, M.sub.I is supported by Z, and M.sub.I is enabled to freely rotate on O.sub.I% around A.sub.M; and W.sub.AH2 is enabled to be tangential to and in close contact with the inner ring surface of M.sub.I; three, four or six identical rotating shafts H.sub.AI parallel to A.sub.M are uniformly and symmetrically fixed onto the circle taking r.sub.A=r.sub.Ir.sub.W as a radius on P.sub.C, where r.sub.W represents a distance from the center of each of the rotating shafts H.sub.AI to the inner ring surface of the magnet M.sub.I; bearings are arranged between H.sub.AI and the bracket P.sub.C, so that H.sub.AI can freely rotate relative to P.sub.C; the lengths of the rotating shafts H.sub.AI below and above P.sub.C are L.sub.H1, L.sub.H2<L.sub.M respectively, and two identical drive wheels W.sub.AH2 and W.sub.AH1 having radius of r.sub.W are respectively fixed onto the parts located below and above the bracket P.sub.C on the shafts H.sub.AI; a clearance with a height of h.sub.HP is arranged between the bottom surface of H.sub.AI and the bottom plane P of the generator; a rotating arm is fixed at the position corresponding to the clearance of h.sub.HP between H.sub.AI and P on the lower part of the center shaft A.sub.M, and a ring C.sub.AH having inner radius of r.sub.I is fixed onto the rotating arm; W.sub.AH1 is tangential to the inner ring surface of C.sub.AH, and W.sub.AH2 is tangential to the inner ring surface of the magnet M.sub.I; because the position where the drive wheel W.sub.AI2 is tangential to the inner ring surface of the magnet M.sub.I is the position where the clearance of the ring-shaped magnetic conductive plate is located, no conducting wire passes through; in this way, C.sub.AH can drive W.sub.AH1 and W.sub.AH2 to rotate at the same linear velocity, thereby driving M.sub.I to rotate; the conducting wire is twined around the conducting wire bracket F.sub.C% without electric brush, and two ends of the conducting wire are connected to the wiring posts; the magnet M.sub.O is fixed onto the upper rotating arm of A.sub.M; when A.sub.M is driven to rotate by power, A.sub.M drives the ring C.sub.AH, W.sub.AI1, W.sub.AI2 and M.sub.I to rotate, because W.sub.AI1 is identical to W.sub.AI1 in radius, C.sub.AH, is identical to M.sub.I in inner diameter and M.sub.O is fixed onto the rotating arm of A.sub.M, the angular velocities of M.sub.I and M.sub.O are identical to that of A.sub.M respectively and the conducting wire is stationary; the conducting wire performs relative motion of cutting the magnetic line of force; because a magnetic circuit is changed by the magnetic conductive plate having holes of the inner ring of F.sub.C%, and no or few magnetic lines of force in the inner ring of F.sub.C% are cut by the conducting wire, DC electromotive force is generated at the two ends of the conducting wire.

9. The DC generator of claim 1, the ring-shaped magnets M.sub.I, M.sub.O with the magnetic field in radial direction are stationary, and ring-shaped conducting strips rotate around A.sub.M in the opposite direction with electric brushes; the center shaft A.sub.M does not rotate, and the magnets M.sub.I, M.sub.O are respectively fixed onto the center shaft A.sub.M and the bottom plate P; n=2n %, ring-shaped conducting strips having the thickness of h.sub.C, height of L.sub.M, and radii of R.sub.C1=r.sub.O+s.sub.m, R.sub.C2=r.sub.O+h.sub.C+2s.sub.m . . . R.sub.On=r.sub.O+(n1)h.sub.C+ns.sub.m respectively are arranged between M.sub.I, M.sub.O, where s.sub.m represents spacing between the adjacent ring-shaped conducting strips and ring-shaped conducting strips 1, n and adjacent magnets M.sub.I and M.sub.O respectively, R.sub.Ir.sub.O=nh.sub.c+(n+1)s.sub.m, r.sub.O and R.sub.I respectively represent the radius of the outer ring surface of the magnet M.sub.I and the radius of the inner ring surface of the magnet M.sub.O; the center lines of the ring surfaces of the n ring-shaped conducting strips coincide, the conducting strips are arranged from inside to the outside in accordance with the order of radii from small to large, two end surfaces of the n conducting rings are respectively arranged on the planes of the two end surfaces of the ring-shaped magnets; the upper part and the lower part of the j.sup.th conducting ring are A.sub.j, B.sub.j respectively, Q.sub.k, k=1, 2 . . . (n+1) represents (n+1) conducting pulleys or conducting brushes; the upper part A.sub.I of the 1.sup.st conducting ring is connected to the first conducting slip ring by Q.sub.1, B.sub.1, B.sub.2 are communicated by Q.sub.2, A.sub.2, A.sub.3 are communicated by Q.sub.3, B.sub.3, B.sub.4 are communicated by Q.sub.4, and so on, B.sub.(n-1), B.sub.n are communicated by Q.sub.n, and the upper part A.sub.n of the n.sup.th conducting ring is connected to the second conducting slip ring by Q.sub.(n+1); upper and lower sleeves A.sub.M1%, A.sub.M2% are provided on the center shaft A.sub.M, and A.sub.M1%, A.sub.M2% are driven to rotate around A.sub.M by power in opposite directions; the upper parts of the 1.sup.st, the 3.sup.rd . . . the (2n %1).sup.th conducting rings are fixed onto the rotating arms of A.sub.M1% located above the conducting rings, and the 2.sup.nd, the 4.sup.th . . . the 2n % .sup.th conducting rings are fixed onto the rotating arms of A.sub.M2% located below the conducting rings; and when A.sub.M1%, A.sub.M2% are driven to rotate by power in the opposite direction, DC electromotive force is generated at the two ends of the conducting wire.

10. The DC generator of claim 1, wherein the magnets are stationary, but the conducting wire rotates; four ring-shaped magnets M.sub.A, M.sub.B, M.sub.C, M.sub.D with the magnetic field in radial direction have the same length and ring width which are L.sub.M, b.sub.M respectively, and the inner radius and outer radius of r.sub.AI, r.sub.AO, r.sub.BI, r.sub.BO, R.sub.a, R.sub.OO, R.sub.DI, R.sub.DO, r.sub.BIr.sub.AO=R.sub.DIE.sub.OOa, R.sub.ar.sub.BOb, wherein the magnetic field directions of the magnets M.sub.A, M.sub.B are identical, the magnetic field directions of M.sub.C, M.sub.D are identical as well, but the magnetic field directions of M.sub.A, M.sub.B are opposite to that of M.sub.C, M.sub.D; the four magnets are arranged in the order of M.sub.A, M.sub.B, M.sub.C, M.sub.D, from inside to the outside by taking the center shaft A.sub.M as a center, wherein the axial center lines of the four magnets coincide, the upper end surfaces are on the same plane, and the lower end surfaces are also on the same plane; the ring-shaped magnetic conductive plate F.sub.MB having inner radius of r.sub.MBI=r.sub.BO, outer radius of r.sub.MBO=r.sub.BO+w.sub.MBC and height of L.sub.MBC=L.sub.M is fixed onto the large ring surface of M.sub.B, where w.sub.MBC represents the width of F.sub.MB, and the ring-shaped magnetic conductive plate F.sub.MC having outer radius of R.sub.MCO=R.sub.a, inner radius of R.sub.MCI=R.sub.aw.sub.MBC and height of L.sub.MBC=L.sub.M is fixed onto the small ring surface of M.sub.C; the magnets M.sub.B, M.sub.C are connected together by the ring C.sub.BC1 fixed at the bottom of the two magnets and the ring C.sub.BC2, fixed at the top thereof; C.sub.BC1 is identical to C.sub.BC2 in inner radius r.sub.MBO, outer radius R.sub.MCI and thickness h.sub.O; the circle with radius of R.sub.BC which is below C.sub.BC1 and above C.sub.BC2 is respectively provided with chutes O.sub.BC1, O.sub.BC2 of which the cross sections are in identical small semicircle shape, O.sub.BC1 having a downward opening, and O.sub.BC2 having an upward opening; the ring-shaped conducting wire bracket F.sub.BC is fixed around the inner side surface of the magnet M.sub.B the outer side surface of M.sub.C, the upper surface and lower surface of M.sub.B, M.sub.C, wherein F.sub.BC consists of an inner ring surface, an outer ring surface, a bottom frame E.sub.1% and a top frame E.sub.2%; the inner ring surface radius and outer ring surface radius of F.sub.BC are r.sub.FBC=r.sub.BI.sub.FBC and R.sub.FBC=R.sub.OO+.sub.FBC respectively, and the height thereof is L.sub.M+2.sub.FBC; .sub.FBC represents the clearance between the inner ring surface of M.sub.B, the outer ring surface of M.sub.C, and the upper surface and lower surface of M.sub.B and M.sub.C, and the conducting wires installed on corresponding parts of F.sub.BC; the middle parts of the bottom frame E.sub.1% and the top frame E.sub.2% are respectively provided with magnetic conductive plates E.sub.1 and E.sub.2, the top surface of E.sub.1% and the top surface of E.sub.1 are arranged on the same plane, the bottom surface of E.sub.2% and the bottom surface of E.sub.2 are arranged on the same plane, and holes in radial direction are provided in E.sub.1 and E.sub.2; the circle with radius of R.sub.BC which is above E.sub.1 and below E.sub.2 is respectively provided thereon with chutes O.sub.BC1%, O.sub.BC2% matching the chutes O.sub.BC1, O.sub.BC2, O.sub.BC1% having an upward opening, and O.sub.BC2% having a downward opening; balls are arranged between O.sub.BC1 and O.sub.BC1% and between O.sub.BC2 and O.sub.BC2%; the total height of O.sub.BC1% filled with balls and O.sub.BC1 is h.sub.BC+.sub.FBC, and the total height of O.sub.BC2 filled with balls and O.sub.BC2% is also h.sub.BC+.sub.FBC; E.sub.2 is fixed onto the rotating arm of A.sub.M, the perpendicular bisector of E.sub.2 coincides with that of the ring surface of the magnet, the chute O.sub.BC2% below E.sub.2 is buckled on the chute O.sub.BC2 filled with balls; the circle with radius of R.sub.BC below E.sub.1 is provided thereon with a chute O.sub.BC1% which has a downward opening and is identical to O.sub.XBC1% in other part; the bottom plate P is provided thereon with a chute O.sub.XBC1 with an upward opening matching O.sub.XBC1%, and balls are arranged between O.sub.XBC1% and O.sub.XBC1; in this way, E.sub.1 can drive the bracket F.sub.BC to freely rotate on the bottom plate P around A.sub.M; passing through the holes of E.sub.1 and E.sub.2, the conducting wire is twined around the conducting wire bracket F.sub.BC, one end of the conducting wire is connected to a first conducting slip ring by an electric brush, and the other end thereof is connected to the second slip ring by an electric brush; the magnets M.sub.A and M.sub.D are fixed onto the bottom plane P of the generator, and E.sub.2 of F.sub.BC is fixed onto the rotating arm of A.sub.M; and the center shaft is driven to rotate by power, and DC electromotive force is generated.

11. The DC generator of claim 10, wherein F.sub.BC is not fixed onto the rotating arm of A.sub.M, but the magnets M.sub.A, M.sub.D are fixed onto the rotating arm, M.sub.A, M.sub.D directly rotate along with the center shaft, and the magnets M.sub.B, M.sub.C synchronously rotate together with M.sub.A, M.sub.D through a drive device G.sub.FBC%; three, four or six identical support posts Z.sub.BC parallel to A.sub.M are uniformly and symmetrically fixed onto the circle taking the axis of A.sub.M as a center of a circle and taking R.sub.BC%, R.sub.a>R.sub.BC(r.sub.BO+R.sub.a)/2, as a radius on the bottom plane P, the support posts Z.sub.BC pass through the bottom frame E.sub.1% of F.sub.BC, and E.sub.1 and the bracket F.sub.BC are fixed onto the support posts Z.sub.BC; the distance from the top surface of these support posts to the upper surface of the bottom frame E.sub.1% of F.sub.BC is h.sub.Z, and a ring plate C.sub.Z with radius of R.sub.BC% is fixed onto the support posts; the circle with radius of R.sub.BC% which is above C.sub.Z and below the top frame E.sub.2% is respectively provided thereon with chutes O.sub.BC1% and O.sub.BC2% on the bottom plane P; rings C.sub.BC1%, C.sub.BC2 having inner diameter of r.sub.MBO, outer diameter of R.sub.MCI and thickness of h.sub.O are respectively fixed between the magnets M.sub.B and M.sub.C at a position h.sub.BC (h.sub.BC>h.sub.Z) away from the bottom surface thereof and a position h.sub.O away from the top surface thereof, the circle with radius of R.sub.BC% which is below C.sub.BC1% and above C.sub.BC2 is respectively provided thereon with chutes O.sub.BC1, O.sub.BC2 of which the cross sections are in identical small semicircle shape matching the chutes O.sub.BC1% and O.sub.BC2%, O.sub.BC1 having a downward opening, and O.sub.BC2 having an upward opening; balls are arranged between O.sub.BC1 and O.sub.BC1% and between O.sub.BC2% and O.sub.BC2; in this way, the magnets M.sub.B and M.sub.c are fixed together by C.sub.BC1%, C.sub.BC2, and are driven by the drive device G.sub.FBC% to rotate on the chutes O.sub.BC1% and O.sub.BC2% along with the center shaft A.sub.M, but the conducting wire bracket F.sub.BC is stationary; the drive device G.sub.FBC% is located between the ring plate C.sub.Z and the bottom surface of M.sub.B, M.sub.C, has a structure as follows: three, four or six identical rotating shafts H.sub.AB parallel to A.sub.M are uniformly and symmetrically fixed onto the circle taking the axis of A.sub.M as a center of a circle and taking r.sub.AH=(r.sub.BO+w.sub.MBC)+r.sub.HBF as a radius on the bottom plate P, where r.sub.HBF represents the distance from the center of the support post H.sub.AB to the outer ring surface of the magnetic conductive plate F.sub.MB of the magnet M.sub.B, r.sub.HBF<[R.sub.BC%(r.sub.BO+w.sub.MBC)]/2, and w.sub.MBC represents the width of F.sub.MB; bearings are arranged between H.sub.AB and the bottom plate P, so that H.sub.AB can freely rotate relative to P; the distance between the top surface of H.sub.AB and the upper surface of the bottom frame F.sub.BC of E.sub.1% is h.sub.AB2, h.sub.AB2<h.sub.Z; two identical drive wheels W.sub.AB1 and W.sub.AB2 with the radius of r.sub.HBF are respectively fixed in the positions h.sub.AB2 away from the upper surface and h.sub.AB1 away from the lower surface of the bottom frame f.sub.BC% of E.sub.1% on the shaft H.sub.AB; a rotating arm is fixed in a position corresponding to the drive wheel W.sub.AB1 on the center shaft A.sub.M, and a ring C.sub.AB with outer circle radius of r.sub.MBO=(r.sub.BO+w.sub.MBC) is fixed onto the rotating arm; W.sub.AB1 is tangential to and in close contact with the outer ring surface of C.sub.AB, W.sub.AB2 is tangential to and in close contact with the outer ring surface of the magnetic conductive plate F.sub.MB of M.sub.B, and C.sub.AB can drive W.sub.AB1 and W.sub.AB2 to rotate at the same linear velocity, thereby driving M.sub.B and M.sub.C fixed together to rotate along with the center shaft A.sub.M; and A.sub.M is driven to rotate by power, and the electromotive force is generated.

12. The DC generator of claim 1, wherein the conducting wire in the conducting wire loop is stationary, but the magnet rotates; the magnet group consists of four ring-shaped magnets M.sub.A, M.sub.B, M.sub.c, M.sub.D and perpendicular to the ring surface in magnetic field direction, the perpendicular bisectors thereof respectively coincide with the center line of A.sub.M, the magnets are arranged from top to bottom in the order of M.sub.A, M.sub.B, M.sub.C, M.sub.D, wherein M.sub.A is identical to M.sub.B in magnetic field direction, the distance therebetween is d.sub.AB, M.sub.C is identical to M.sub.D in magnetic field direction, the distance therebetween is d.sub.CD=d.sub.AB, M.sub.C and M.sub.D are opposite to M.sub.A and M.sub.B in magnetic field direction, the distance between M.sub.B, M.sub.C is d.sub.BC, and ring-shaped magnetic conductive plates are arranged between M.sub.B, M.sub.C; the ring-shaped magnetic conductive plates F.sub.PB, and F.sub.PC are respectively fixed below the magnet M.sub.B and above M.sub.C, F.sub.FB is identical to F.sub.PC, the thickness is h.sub.MBC, and the inner circle radius and the outer circle radius are r.sub.MBC=r.sub.M, R.sub.MBC=R.sub.M respectively; the distance between the opposite surfaces of F.sub.PB and F.sub.PC is d.sub.MBC=d.sub.BC2h.sub.MBC, and the ring-shaped magnetic conductive plate F.sub.PB with the thickness of d.sub.MBC and inner circle radius and outer circle radius of r.sub.MBC%=r.sub.M+a.sub.MBC, R.sub.MBC%=R.sub.Mb.sub.MBC respectively is added between F.sub.FB and F.sub.PC; M.sub.B, F.sub.FB and F.sub.PBC are fixed together, M.sub.C and F.sub.PC are fixed together, and M.sub.B, F.sub.PB and F.sub.PBC as a whole are tightly combined with M.sub.C and F.sub.PC as a whole; after installation, M.sub.B and F.sub.PB, and F.sub.PBC and M.sub.C respectively coincide with the perpendicular bisector of the ring surface of F.sub.PC; the circles with radii of r.sub.FBI=r.sub.M+a.sub.MBC/2 and R.sub.FBO=R.sub.Mb.sub.MBC/2 below the ring-shaped magnetic conductive plate F.sub.PB are respectively provided thereon with chutes O.sub.FBI%, O.sub.FBO% of which the cross sections are in small semicircle shape; the center shaft A.sub.M of such form also has high permeability; a bearing taking A.sub.M as a shaft is fixed in the position of h.sub.AF in height of the center shaft A.sub.M, the ring-shaped magnetic conductive plate F.sub.ABI with radius of r.sub.MBC%=r.sub.M+a.sub.MBC.sub.FBC is fixed onto the bearing, where at the part of rr.sub.M.sub.FBC, the thickness of F.sub.ABI is d.sub.BC, and at the part of r.sub.M.sub.FBCrr.sub.M+a.sub.MBC.sub.FBC, the thickness of F.sub.ABI is d.sub.BC%=d.sub.BC2h.sub.MBCh.sub.OFB.sub.FBC; a chute O.sub.FBI matching the chute O.sub.FBI% is arranged on the circle with radius of r.sub.FBI=r.sub.M+a.sub.MBC/2 above F.sub.ABI, wherein the total thickness is h.sub.OFB after O.sub.FBI and O.sub.FBI% are combined together, and .sub.FBC<<r.sub.M represents clearance; a bracket Y is fixed onto the bottom plate P of the generator, and the ring-shaped magnetic conductive plate F.sub.ABO is fixed onto the bracket Y; the inner ring radius and outer ring radius of F.sub.ABO are R.sub.FBI=R.sub.MR.sub.MBC, R.sub.FBO=R.sub.M+c.sub.MBC, respectively, at the part of RR.sub.M+.sub.FBC, the thickness of F.sub.ABO is d.sub.BC, and at the part of R.sub.M+.sub.FBCRR.sub.Mb.sub.MBC+.sub.FBC, the thickness of F.sub.ABO is d.sub.BC%; a chute O.sub.FBO matching the chute O.sub.FBO% is arranged on the circle with radius of R.sub.FB=R.sub.Mb.sub.MBC/2 above F.sub.ABO, wherein the total thickness is h.sub.OFB after O.sub.FBO and O.sub.FBO% are combined together; in the parts with thickness of d.sub.BC close to the magnets on F.sub.ABO and F.sub.ABI, i.e. RR.sub.M+2.sub.FBC and rr.sub.M2.sub.FBC regions, ring planes perpendicular to F.sub.ABO and F.sub.ABI are respectively provided with n holes through which insulated conducting wires can pass; three, four or six rotating shafts Z.sub.W are fixed onto the circle with radius of R.sub.AW=R.sub.M+R.sub.W>R.sub.FBO=R.sub.M+C.sub.B on the bottom plate P; two identical drive wheels W.sub.A, W.sub.B with radius of R.sub.W are respectively installed in the positions corresponding to the magnets M.sub.A, M.sub.B on Z.sub.W; the drive wheel W.sub.A is tangential to and in close contact with the outer ring of M.sub.A, W.sub.B is tangential to and in close contact with the outer ring of M.sub.B, and no conducting wire passes through in the position where W.sub.B is tangential to M.sub.B; M.sub.A drives W.sub.A, W.sub.B to rotate at the same linear velocity when rotating, and W.sub.B drives M.sub.B to rotate the same linear velocity; a ring-shaped conducting wire bracket G.sub.FBC is fixed around the magnets M.sub.B, M.sub.C through the holes of F.sub.ABO and F.sub.ABI, the side surface radius of the outer ring of G.sub.FBC is R.sub.G=R.sub.M+2.sub.FBC, the side surface radius of the inner ring is r.sub.G=r.sub.M2.sub.FBC, both the top frame G.sub.2 and the bottom frame G.sub.1 are ring planes, the inner radius and outer radius thereof are respectively identical to the side surface radius of the inner ring and the side surface radius of the outer ring, both the distance from G.sub.1 to the bottom surface of M.sub.C and the distance from G.sub.2 to the top surface of M.sub.B are .sub.FBC; the conducting wire bracket G.sub.FBC is provided thereon with a conducting wire which twines through the holes of F.sub.ABO and F.sub.ABI, and the two ends of the conducting wire are respectively connected to the wiring posts 1 and 2; no conducting wire is twined in the positions where the drive wheels W.sub.A, W.sub.B are tangential to M.sub.A, M.sub.B respectively; and the center shaft A.sub.M is driven by power, and DC electromotive force is generated at the two ends of the conducting wire.

13. The DC generator of claim 12, wherein the conducting wires between the magnets M.sub.A, M.sub.B and between M.sub.C, M.sub.D are replaced with conducting strips, corresponding conducting wire brackets are replaced with conducting strip brackets, the conducting strips are stationary, but the magnets rotate; 2n conducting strips D.sub.j, j=1, 2 . . . 2n which are identical to the magnets in ring surface and having the thickness of h.sub.P are uniformly arranged on the conducting wire brackets between the magnets M.sub.A, M.sub.B, the 2.sup.nd, the 4.sup.th . . . the 2n.sup.th conducting strips are uniformly arranged on the conducting strip brackets between the magnets M.sub.C, M.sub.D, and the vertical center lines of all conducting strips coincide with the vertical center lines of the magnets; the outer circle edge of the conducting strip D.sub.1 is connected to the first wiring post, the inner circle edge of D.sub.1 is connected to the inner circle edge of D.sub.2 by a conducting wire passing through the first hole of the ring-shaped magnetic conductive plate F.sub.ABI, the outer circle edge of D.sub.2 is connected to the outer circle edge of D.sub.3 by a conducting wire passing through the first hole of the magnetic conductive plate F.sub.ABO, the inner circle edge of D.sub.3 is connected to the inner circle edge of D.sub.4 by a conducting wire passing through the second hole of F.sub.ABI, and so on, the inner circle edge of D.sub.2n-1 is connected to the inner circle edge of D.sub.2n by a conducting wire passing through the n.sub.th-hole of the magnetic conductive plate F.sub.ABI, and the outer circle edge of D.sub.2n is connected to the second wiring post by a conducting wire; no conducting wire passes through in the position where the drive wheel W.sub.B is tangential to the magnet M.sub.B, and W.sub.A, W.sub.B can be in close contact with M.sub.A, M.sub.B respectively and rotate simultaneously; and when the center shaft A.sub.M is driven to rotate by power, the magnets M.sub.A, M.sub.B, M.sub.C, M.sub.D rotate at the same angular velocity as A.sub.M, 2n serial conducting strips perform relative motion of cutting the magnetic line of force relative to the magnets, and DC electromotive force is generated.

14. The DC generator of claim 1, wherein the magnets used in the generator are permanent magnets or electromagnets; the electromagnet consists of an excitation coil and an iron core.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1-1 is a front sectional view of a conducting wire on a magnetic conductive plate of the 1.sup.st form of DC generator. In the Figure, 1 represents the ring-shaped magnetic conductive plate F.sub.L; 2 represents the conducting wire; 3 represents the hole in the magnetic conductive plate; and 4 represents the magnetic conductive plate bracket around with the conducting wire twines.

(2) FIG. 1-2 is a top view of a ring plate twined by a conducting wire, fixed onto the magnetic conductive plate and made of non-magnetic conductive material of the 1.sup.st form of DC generator. In the Figure, 2 represents the conducting wire.

(3) FIG. 2 is a front sectional view of a part of a conducting wire of the 2.sup.nd form of DC generator. In the Figure, 5 represents the ring-shaped conducting strip, 6 represents the conducting wire connecting the conducting strips and arranged in the magnetic conductive tube.

(4) FIG. 3 is a front sectional view of a conducting wire of the 3.sup.rd form of DC generator. In the Figure, 5 represents the conducting strip; and 7 represents the electric brush connecting the ring-shaped conducting strips, 8 represents the bearing rotating around the center shaft A.sub.M, 9 represents the conducting slip ring, and 10 represents the rotating arm on A.sub.M.

(5) FIG. 4-1 is a top sectional view of the arrangement of magnets, conducting wires and magnetic conductive plates of the 5.sup.th form of DC generator. In the Figure, 11 represents the conducting wire in the hole of the magnetic conductive plate, in which the current inwards flows, and 12 represents the conducting wire out of the hole of the magnetic conductive plate, in which the current outwards flows; and the conducting wire twines inside and outside the magnetic conductive tube. FIG. 4-2 is a side sectional view of a conducting wire of the 5.sup.th form of DC generator. In the Figure, 13 represents the magnetic conductive plate with holes; and 14 represents the conducting wire in the hole of the magnetic conductive plate and out of the hole thereof.

(6) FIG. 5 is a front sectional view of the 6.sup.th form of DC generator. In the Figure, 15 represents the chute fixed onto the magnet, and 16 represents the chute fixed onto the conducting wire bracket; 17 represents the magnetic conductive plate fixed onto the center shaft together with the conducting wire bracket; and 18 represents the conducting wire in the hole of the magnetic conductive plate and out of the hole thereof.

(7) FIG. 6-1 is a front sectional view of the right part of the first form of the 7.sup.th form of DC generator. In the Figure, 19 represents the rotating shaft H.sub.Al, fixed onto the bottom plate P.sub.C, P.sub.C being fixed onto the bottom plate P; 20 represents the drive wheel W.sub.AH2 tangential to the magnet M.sub.I, and 21 represents the drive wheel W.sub.AH1 tangential to the inner ring surface of C.sub.AH; 22 represents the ring C.sub.AH fixed onto the rotating arm and having an inner radius of r.sub.I; 23 represents the bearing between the rotating shaft H.sub.Al and the bottom plate P.sub.C; 24 represents bracket P.sub.C on the bottom plate; 25 represents the support post Z of the conducting wire bracket fixed onto the bottom plate P.sub.C; 26 represents the chute between the support post Z and the magnet M.sub.I; 27 represents the magnetic conductive plate on the conducting wire bracket; and 28 represents the conducting wire bracket, wherein the dotted portion indicates that there is no magnetic conductive plate and conducting wire in the position where the drive wheel is tangential to the magnet M.sub.I.

(8) FIG. 6-2 is a front sectional view of the right part of the second form of the 7.sup.th form of DC generator. In the Figure, 29 represents the rotating shaft H.sub.Al, fixed onto the bottom plate P; 30 represents the drive wheel W.sub.AH2 tangential to the magnet M.sub.O, and 31 represents the drive wheel W.sub.AH1 tangential to the outer ring surface of {tilde over (C)}.sub.AH; 32 represents the ring {tilde over (C)}.sub.AH fixed onto the rotating arm and having an outer radius of R.sub.O; 33 represents the bottom plate P; 34 represents the support post Z of the conducting wire bracket fixed onto the bottom plate P; 35 represents chutes and balls between the support post Z and the magnet M.sub.O; 36 represents the magnetic conductive plate on the conducting wire bracket, wherein the dotted portion indicates that there is no magnetic conductive plate and conducting wire in the position where the drive wheel is tangential to the magnet M.sub.I; and 37 represents the conducting wire.

(9) FIG. 7 is a front sectional view of the 8.sup.th form of DC generator. In the Figure, 38 and 39 respectively represent rotating arms rotating in opposite directions around the stationary center shaft A.sub.M; 40 represents the bearing between the rotating arm 58 and the center shaft A.sub.M, and 41 represents the bearing between the rotating arm 39 and the center shaft A.sub.M; 42 and 43 respectively represent the ring-shaped conducting strips fixed onto the rotating arms 38 and 39 rotating in opposite directions; 44 represents the conducting wheel or conducting brush between the conducting strips 42 and 43 rotating in opposite directions; and 45 represents the bracket of the magnet M.sub.O.

(10) FIG. 8 is a front sectional view of the 9.sup.th form of DC generator. In the Figure, 46 represents the ring-shaped conducting wire bracket surrounding the magnets M.sub.C and M.sub.B; 47 and 48 respectively represent the magnetic conductive plates closely attached to the magnets and M.sub.B; 49 represents the magnetic conductive plates arranged below the magnets M.sub.C and M.sub.B, and 50 represents the magnetic conductive plates arranged above the magnets M.sub.C and M.sub.B and fixed onto the rotating arm; 51 and 52 respectively represent chutes between the lower surface and the upper surface of the magnets M.sub.C and M.sub.B and corresponding magnetic conductive plates; and 53 represents chutes between the magnetic conductive plate below the magnets M.sub.C and M.sub.B and the bottom plate;

(11) FIG. 9 is a front sectional view of the right part of the 8.sup.th form of DC generator. In the Figure, 54 represents the ring C.sub.AB fixed onto the rotating arm and having an outer circle radius of r.sub.MBO=(r.sub.BO+w.sub.MBC); 55 represents the rotating shaft H.sub.AB of the bearing installed on the bottom plate P, H.sub.AB passing through the hole having no conducting wire of the magnetic conductive plate below the magnet M.sub.B, M.sub.C; 56 and 57 respectively represent drive wheels W.sub.AB1 and W.sub.AB2 having identical angular velocity fixed onto the rotating shaft H.sub.AB, wherein W.sub.AB1 is tangential to the outer ring surface of C.sub.AB, and W.sub.AB2 is tangential to the outer ring surface of the magnet M.sub.B; 58 represents chutes and balls between the top surface of the conducting wire bracket and the lower surface of the magnetic conductive plate connecting the magnets M.sub.B, M.sub.C; 59 represents chutes and balls between the magnetic conductive plate connecting the upper parts of the magnets M.sub.B, M.sub.C and the magnetic conductive plate fixed onto the conducting wire bracket; 60 represents the magnetic conductive plate arranged above M.sub.B, M.sub.C, and fixed onto the conducting wire; 61 represents the magnetic conductive plate arranged below M.sub.B, M.sub.C, fixed onto the bottom plate bracket and fixed together with the conducting wire bracket; 62 represents the conducting wire bracket fixed to the magnetic conductive plate; 63 and 64 respectively represent the magnetic conductive plates closely attached to the outer ring surface of the magnet M.sub.B and the inner ring surface of M.sub.C; and 65 represents the rotating arm on the center shaft A.sub.M.

(12) FIG. 10 is a front sectional view of the right part of the 11.sup.th form of DC generator. In the Figure, 66 represents the rotating shaft Z.sub.W fixed onto the bottom plate P; 67 and 68 respectively represent the two identical drive wheels W.sub.A, W.sub.B having radius of R.sub.W and identical angular velocity corresponding to the magnets M.sub.A, M.sub.B; the drive wheel W.sub.A is tangential to the outer ring of M.sub.A, and W.sub.B is tangential to the outer ring of M.sub.B; 69 represents the bracket of the ring-shaped magnetic conductive plate F.sub.ABO; 70 represents the bearing for installing the magnetic conductive plate F.sub.ABl on the center shaft A.sub.M; 71 represents the conducting wire bracket fixed onto the magnetic conductive plates F.sub.ABO and F.sub.ABl, wherein the dotted portion indicates that the ring-shaped conducting wire bracket G.sub.FBC has no magnetic conductive plate in the position where the drive wheel W.sub.B is tangential to the outer ring of the magnet M.sub.B and has no conducting wire either; 72 represents chutes and balls between the magnetic conductive plate F.sub.ABl fixed onto the bearing of A.sub.M and the magnetic conductive plate {tilde over (F)}.sub.MB below the magnet M.sub.B; 73 and 74 respectively represent the magnetic conductive plate {tilde over (F)}.sub.MB installed below the magnet M.sub.B and the magnetic conductive plate {tilde over (F)}.sub.MC installed above the magnet M.sub.C; 75 and 76 respectively represent the upper and lower rotating arms fixed onto the center shaft A.sub.M.

BEST MODE

(13) In the first mode, 18 identical small magnets are spliced into two identical ring-shaped magnets M.sub.A, M.sub.B, each of M.sub.A, M.sub.B having a thickness of 30 mm, an inner diameter of 600 mm, an outer diameter of 900 mm, a magnetic field direction perpendicular to ring surfaces, and a magnetic induction intensity of B=0.3 T.

(14) The magnetic conductive plate F.sub.L is made by a DT4C pure iron plate with the thickness of 15 mm, the inner diameter thereof being 600 mm, and the outer diameter being 900 mm. 300 holes with the diameter section of about 36 mm.sup.2 are uniformly drilled in the radial direction, and the whole magnetic conductive plate F.sub.L is completely insulated from the outside. An upper and a lower nylon frames A and B which are identical and hollow are made, the inner diameter and outer diameter thereof being 600 mm and 900 mm respectively, and the height being 170 mm. The two nylon frames are tightly fixed at the two sides of the magnetic conductive plate. In the first mode, the conducting wire of which the surface is provided with an insulation layer passes through the hole of the magnetic conductive plate F.sub.L and twines around the magnetic conductive plate and the outer surface of the nylon frame. Ten conducting wires each having a cross section of 0.5 mm.sup.2 pass through each hole.

(15) The center shaft A.sub.M is made of stainless steel, is 700 mm in height, and has a diameter of 40 mm. Two groups of identical upper and lower rotating arms may be respectively fixed at the places 100 and 515 mm in height of the center shaft, each group including 6 rotating arms each having an length of 390 mm. A.sub.M is fixed by the bottom plate P and the frame, and the base of A.sub.M is a magnetic suspension bearing. The lower rotating arm is fixed at a place 100 mm in height of A.sub.M, and the ring-shaped magnet M.sub.A is fixed onto the lower rotating arm; and

(16) the magnetic conductive plate around which the conducting wire twines and the nylon plate A are fixed onto the bottom plate P in a mode of being parallel to the magnet M.sub.A and aligned with the perimeter. The distance between the lower surface of the nylon plate A and the upper surface of M.sub.A is 5 mm.

(17) The magnet M.sub.B and the upper rotating arm are fixed together, and then the center lines of the two coincide. The upper rotating arm onto which the magnet M.sub.B is fixed is fixed at a place 515 mm in height of A.sub.M. The distance between the lower surface of M.sub.B and the upper surface of the nylon plate B is 5 mm.

(18) The two ends of the conducting wire are respectively connected to the wiring posts 1, 2.

(19) A.sub.M is driven to rotate by power, and DC electromotive force is generated between the wiring posts 1, 2. If the angular velocity of A.sub.M is 60 revolutions per minute, the DC electromotive force is 39 volt.