Abstract: A rotary electric machine includes: a shaft that rotates about an axial direction; a rotor that is disposed around the shaft and that includes a rotor core and a plurality of magnets provided in the rotor core; a stator that is disposed around the rotor and that includes a stator core and a stator coil provided in the stator core; a magnetic flux short circuit plate that is disposed so as to face the rotor core in the axial direction and that moves in the axial direction; a biasing member that biases the magnetic flux short circuit plate to a side away from the rotor core; a holding member that holds the biasing member; and a fixing member that fixes the holding member to the shaft. Further, a strength of a material of the fixing member is higher than a strength of a material of the holding member.

Abstract: The permanent magnet machine includes a stator, a rotor inside the stator and a ferromagnetic component fixed axially movably to the rotor. The ferromagnetic component is configured for actuating axially toward the rotor to weaken a magnetic field of the rotor. The method of constructing a permanent magnet machine includes providing a stator and a rotor inside the stator; and axially movably fixing a ferromagnetic component to the rotor such that the ferromagnetic component is configured for actuating axially toward the rotor to weaken a magnetic field of the rotor.

Abstract: When the magnet holding spring is in the deployed state of the plate-like shape, the auxiliary pole is beforehand fixed to one of the side-plates, then the magnet holding spring is bent into a “]”-like sectional shape. As a result, the magnet holding spring and the auxiliary pole that are assembled integrally constitute the sub-assy. Convex parts are formed on the auxiliary pole. The auxiliary pole is fixed to one of the side-plates by press fitting the convex parts to the fitting holes formed on one of the side-plates. The auxiliary pole is laid on one of the side-plates in the direction of a plate thickness for positioning before forming the convex parts on the auxiliary pole. In the positioned state here, by embossing the auxiliary pole, the convex parts are formed on the auxiliary pole, and at the same time, the convex parts are press fit into the fitting holes thus the auxiliary pole is fixed to one of the side-plates.

Abstract: The electric rotating machine includes a rotor and an armature. The rotor consists of a cylindrical part having a field winding and a claw-pole shaped magnetic pole part. A magnetic short-circuit mechanism is disposed between the magnetic pole parts adjacent each other in circumferential direction of a rotor core so as to cause a magnetic plate of a material of high magnetic permeability to move toward radial direction of the rotor core, thereby short-circuiting between N-pole and S-pole of a permanent magnet due to centrifugal force acting in accordance with rotation of the rotor.

Abstract: An electrically commutated motor for a fuel pump having a rotor connected to a shaft and having plastic-bonded ferrite, with a fuel-resistant shaped body formed by the plastic-bonded ferrite, and a magnetic return element adjustable in relation to the shaped body.

Abstract: An electric motor utilizing permanent magnets, wherein the permanent magnets produce a flux circuit in a first direction and shunt elements whereby the magnets and shunt elements rotate relative to each other wherein the shunt elements sequentially interrupt the magnet flux circuit to minimize generated flux circuits tending to rotate the motor in a direction opposite to the primary direction of motor rotation.