Multiple arrays of linear motors and generators are combined in a radial configuration to provide high mechanical efficiency to deliver power in a single plane of motion to a common crankshaft. Magnet core assemblies for the motors and generators use powerful rare earth magnets positioned within an outer flux containment shell comprising a highly-magnetically-permeable ferrous-alloy to provide high power density. The motor magnet stack is attached directly to a link rod that connects to the crankshaft. Pulsed power is provided to electromagnetic coils coils by microcomputer control, and coil energy is recovered at the ends of the linear stroke. A controller energizes the coils in certain combinations of coil location and polarity in order to produce bi-directional mechanical motion. Energy that is released when coils are switched off is harvested as voltage pulses returned to standby batteries or capacitors, or the electrochemical cells.

According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.

The rotary electrical machine having a homopolar structure includes a number Npe of electrical phases. The machine includes a juxtaposition, along the rotational axis of the rotary electrical machine, of at least one pair of armatures having a number of poles Np, placed on both sides of at least one inductive coil wound around the rotational axis, two adjacent armatures being angularly offset by any electrical angle θs, preferably between 0° and 180°/Npe, and at least one “passive” inductor of ferromagnetic material, separated from the armatures by an air gap. Either the armatures form the rotor, or the inductor and the other element form the stator.

Disclosed are various embodiments for assembling a new and improved electrical motor/generator, specifically a method of producing a coil assembly is disclosed comprising: pressing a plurality of individual teeth having interlocking side features, applying a conductor around one of the interlocking side features, coupling a tooth of the coil assembly with an adjacent tooth, applying a second conductor around one of the interlocking side features of the adjacent tooth, repeating the coupling and applying steps until an entire ring has been assembled.

A stator includes a first sleeve extending in an axial direction and a first stator core on an outer periphery of the first sleeve. The first stator core includes a lower core and an upper core on a side of the lower core opposed to a first end of the axial direction. The lower core includes a lower annular portion with an annular shape and lower pole teeth protruding radially outward from a radially outer end surface of the lower annular portion and extending to a second end of the axial direction. The upper core includes an upper annular portion with an annular shape arranged on the lower annular portion opposed to the first end of the axial direction to overlap the lower annular portion, and upper pole teeth protruding radially outward from a radially outer end surface of the upper annular portion and extending to the second end of the axial direction. Each of the lower pole teeth and each of the upper pole teeth are alternately arranged in the circumferential direction.

A stator includes a cylindrical shaft extending in an axial direction, annular portions positioned side by side in the axial direction radially outside the shaft and extending in a radial direction, pole teeth extending in the axial direction from a radially outer end portion of each of the annular portions, and one or more coils between the annular portions adjacent to each other in the axial direction and wound around the shaft. The shaft includes at least one slit recessed radially inward from an outer peripheral surface of the shaft and extending along the axial direction. A portion of the at least one slit is radially inside the annular portion. A lead wire of the coil is accommodated in the at least one slit.

A stator for a drive motor includes: a segmented stator core including a plurality of mounting portions; a bobbin equipped on each mounting portion of the plurality of the mounting portions and having a coil wound thereon; a first casing and a second casing coupled to the bobbin, respectively, at opposite sides of the bobbin with respect to the segmented stator core, and configured to enclose the coil; a passage formed in one of the first casing or the second casing, and configured to allow fluid communication with the inside of the first casing and the second casing; and a terminal portion integrally formed in a remaining one of the first casing or the second casing and configured to allow connection of the coil.

The invention relates to a claw pole stator (1) for a transverse flux machine (2). The claw pole stator (1) is made of a plurality of segments (3) that are arranged next to one another along a circumferential direction (4) so as to form the annular claw pole stator (1). Each segment (3) extends from an inner circumferential surface (5) along a radial direction (6) to an outer circumferential surface (7) and is delimited by a first lateral surface (8) and a second lateral surface (9) in the circumferential direction (4) and by a first end surface (11) and a second end surface (12) in an axial direction (10). Each segment (3) is connected to additional segments (3) via the lateral surfaces (8, 9) in order to form the annular claw pole stator (1), and adjacent segments (3) contact one another via a first contact surface (13) on the first lateral surface (8) or via a second contact surface (14) on the second lateral surface (9) and form a connection (15) which is interlocking in the circumferential direction (4) via the contact surfaces (13, 14).

A stator includes stator iron cores stacked in a rotor axial direction, and an interphase insulating member arranged between the stator iron cores. Each of the stator iron cores includes a circular back yoke and a stator claw magnetic pole that protrudes from the back yoke in a rotor radial direction. The interphase insulating member includes an insulating portion, arranged between adjacent ones of the stator iron cores, and a support. The stator claw magnetic pole is in contact with the support in at least one of a rotor circumferential direction and the rotor radial direction.

A motor includes a stator, a rotor rotatable relative to the stator, and a fixing member. The fixing member includes first and second end plates, and at least one rod shaped portion. At least one of the stator and rotor includes an iron core formed by a powder magnetic core. The iron core includes a through hole extending through the iron core in an axial direction of the rotor. The first and second end plates are arranged to directly or indirectly contact end surfaces of the iron core in the axial direction. The rod shaped portion is fixed to the first and second end plates in a state in which the rod shaped portion is inserted in the through hole of the iron core, and the iron core is sandwiched by the first and second end plates in the axial direction of the rotor.