A fixed magnetic gap permanent magnet speed governor, including a cylindrical conductor rotor and a permanent magnet rotor disposed therein, the permanent magnet rotor includes at least one permanent magnet, two length sides of the permanent magnet are an N pole and an S pole respectively, two magnetic pole end surfaces and two length sides of the permanent magnet are arranged with fixed magnetizers and movable magnetizers respectively, the fixed magnetizers and the movable magnetizers form a closed magnetic loop. Adopting the fixed magnet gap structure improves an engagement area of speed governor and reduces assembling difficulty, saves a rare-earth material, increases a torque transmission capability. The adoption of a magnetic circuit adjustment structure reduces the power consumption of an adjustment execution mechanism, maximally reduces the size of the adjustment execution mechanism, reduces the overall size of the speed governor, reducing material consumption, saving installation space, and facilitating on-site installation.

A plunger electric fuel pump includes a cylinder; a plunger; a pump body; a movable element to which the plunger is connected; a fixed core provided so as to face the movable element; a rotational core including a permanent magnet; an electric motor configured to rotate the rotational core; and a spring configured to urge the movable element in a direction away from the pump body. The rotational core and the fixed core are provided with a switching portion configured to switch between a first state and a second state when a rotational phase of the rotational core is changed, the first state being a state where the magnetic force of the permanent magnet is not applied to the movable element, the second state being a state where the magnetic force of the permanent magnet is applied to the movable element.

An axial flux permanent magnet machine including a pair of axially spaced first components. A second component positioned axially between and equidistant from the first components. Either the pair of first components or the second component is arranged to rotate about a shaft. A translation mechanism coupled to each of the first components. The translation mechanism configured to translate the first components axially away from the second component. Also a method of controlling an axial flux permanent magnet machine.

The purpose of the present invention is to provide a electric generator which has a simple structure while sufficiently suppressing cogging torque. A electric generator is constituted by a rotor section comprising a plurality of protrusions which is arranged linearly with constant pitch at mutually separated positions sandwiching permanent magnets, and a stator section which has a stator member comprising stator yokes, permanent magnets facing the permanent magnets, and protrusions which protrude closer to the rotor section than the permanent magnets and are arranged linearly with constant pitch at mutually separated positions sandwiching the permanent magnets, the stator member being configured such that the protrusions and the protrusions are shifted from each other by a half pitch between adjoining stator members. Further, the rotor section-side protrusions may be shifted by a half pitch instead of the stator section-side protrusions.

An axial flux electric machine has a rotatable shaft, a fixed stator core comprising a ferromagnetic material and defining an axis of rotation, and a rotor assembly comprising a plurality of permanent magnets. The rotor assembly is rotatable about the axis of rotation. An axial air gap is defined between the stator core and the rotor assembly. The rotor assembly is axially displaceable towards and away from the stator core. The rotor assembly has a first position wherein the axial gap is a predetermined width greater than zero, and a second position wherein the axial gap is zero, such that the rotor assembly and the stator core contact each other.

An electric power supply system configured to supply electric power to an electrical load device in accordance with a current requirement. The electric power supply system includes an engine configured to output rotational power, a generator configured to receive the rotational power and to supply a current to the electrical load device. The generator includes a rotor, and a stator including a winding and a stator core with the winding wound thereon, a magnetic circuit for the winding passing through the stator core, and a supply current adjustment device configured to adjust magnetic resistance of the magnetic circuit for the winding, to thereby change an inductance of the winding to adjust the supplied current. The electric power supply system further includes a control device configured to control the engine to adjust the output rotational power and to control the supply current adjustment device to adjust the inductance of the winding.

In a rotating electric machine, a field element has magnetic poles of which polarities alternate in a circumferential direction. An armature includes an armature core having a circular cylindrical shape, and an armature winding of multiple phases. The field element and the armature are provided to oppose each other in a radial direction with an air gap therebetween. Either of the field element and the armature serving as a rotor. The armature winding has a coil-side conductor portion that opposes the magnetic pole of the field element in the radial direction. The coil-side conductor portions are arranged in an array in the circumferential direction. The armature winding is provided with a protruding portion that, between an inner side and an outer side in the radial direction, protrudes towards the field element, and is located further towards an outer side in an axial direction than the coil-side conductor portion is.

The invention relates to a permanent magnet motor, comprising: a stator configured for generating a time-varying magnetic field; a rotor, arranged inside of the stator, comprising at least one permanent magnet providing a constant magnetic field; the permanent magnet being made of a flexible material; the stator being configured for rotating the rotor by taking along the constant magnetic field of the rotor with the time-varying magnetic field of the stator; the rotor comprising a field weakening mechanical arrangement configured for weakening a flux of the permanent magnet motor; the field weakening mechanical arrangement supporting the permanent magnet and comprising a recess configured for allowing the permanent magnet to be deformed by a centrifugal force provided by the rotation of the rotor.

A rotor for an electrical machine includes a rotor body and an axis of revolution which extends in an axial direction and about which the rotor body is rotatable. The rotor further includes an outer casing surface which delimits the rotor body, at least one pole arrangement, and a movement mechanism for the at least one pole arrangement. The movement mechanism is designed such that the at least one pole arrangement is movable about a rotation axis which is oriented substantially parallel to the axis of revolution of the rotor. The at least one pole arrangement is also movable about the rotation axis in addition to rotation about the axis of revolution of the rotor.

A magnetic motor comprising a rotating flywheel coupled to rotate a drive output shaft within a support cage. Multiple permanent magnets extend directionally from the flywheel. Pairs of positionally fixed electro-magnets extend from the cage effacing platforms for sequential selective magnetic interaction with permanent magnets rotatable driving the flywheel and the drive output shaft.