Provided is an arrangement for producing electric energy, including: a generator having plural winding sets; plural converters each connected to one of the winding sets; at least two transformers, each connected at a low voltage side to output terminal of at least one converter; and a control portion connected to control the converters.

A method of manufacturing a segment for a stator of an electrical generator includes manufacturing a segment body circumferentially extending between at least a first end slot and a second end slot, providing the coil concentrated winding in the slots of the segment body, providing a first pressure plate a second pressure plate for respectively holding the coil in the first end slot and the second end slot, applying vacuum pressure impregnation to the coil concentrated winding in the slots of the segment body, and removing the first pressure plate and the second pressure plate for obtaining the segment.

A wheel assembly includes an attachment module, a motor module, a battery module, and a wheel. The wheel is rotatably coupled to the attachment module about a rotational axis of the wheel. The attachment module has a plurality of coupling elements, and the motor module and the battery module each releasably couple to one of the coupling elements. The wheel extends around the attachment, motor, and battery modules. The motor and battery modules are identically shaped in a direction along the rotational axis.

A rotating electrical machine rotor core is implemented that can suppress an increase in number of manufacturing processes and has a magnetic structure that can reduce noise or vibration associated with rotation. A rotating electrical machine rotor core includes a member disposition hole in which a permanent magnet is disposed; and pair of magnetic flux limiting holes disposed on both sides in circumferential direction of each of magnetic poles, units in which member disposition hole is repeatedly made in circumferential direction being magnetic poles. Each magnetic plate includes plurality of types of through part pairs having different circumferential spacings between pair of limiting-hole through parts that makes pair of magnetic flux limiting holes.

A rotor of a rotary electric machine for a vehicle includes a rotor shaft and a rotor core including a plurality of electromagnetic steel plates fitted to an outer peripheral surface of a rotor shaft in an interference fit state or a transition fit state. A strength of the electromagnetic steel plate disposed in at least one of end portions of the rotor core in an axial direction of the rotor shaft is set to be higher than a strength of the electromagnetic steel plate disposed in a central portion of the rotor core in the axial direction of the rotor shaft.

A modular stator includes a first stator module and a second stator module. The first stator module includes a plurality of first coil end regions and a plurality of first junctions. The second stator module includes a plurality of second coil end regions and a plurality of second junctions. The first stator module and the second stator module are joined at the plurality of first junctions and the plurality of second junctions.

A system includes a motor, a frame, and connecting bolts. The motor includes a shaft. The frame is configured to house the motor. The frame includes connection holes and a base. Two or more of the connection holes are selected corresponding to a selected height of the shaft. The base is configured to mount the motor onto a foundation. Each of the connecting bolts is configured to pass through a respective connection hole and bolt to the motor to secure the motor to the frame.

A system for wirelessly transmitting power between a track and independent movers in a motion control system includes a pick-up coil provided proximate to the magnets on the movers. The fundamental component of the voltage applied to the drive coils interacts primarily with the magnetic field generated by the permanent magnets on the movers and not with the pick-up coil. Consequently, the pick-up coil does not interfere with desired operation of the movers but rather, interacts primarily with the harmonic components and has current and voltages induced within the pick-up coil as a result of the harmonic components. The energy captured by the pick-up coil reduces the amplitude of eddy currents on the mover. After harvesting the harmonic content, the pick-up coil may be connected to another circuit on the mover and serve as a supply voltage for the other circuit.

A modular drive system includes a first motor and a second motor. The first motor generates a first torque over a first torque bandwidth, and has a first stator, a first rotor, and a first winding. The first winding has a first number of turns, a first conductor area and a first insulation suitable for a first peak voltage of the first motor. The second motor generates the first torque over a second torque bandwidth, and has a second stator matching the first stator, a second rotor matching the first rotor and a second winding. The second winding has the first number of turns, the first conductor area and a second insulation suitable for a second peak voltage of the second motor. The second peak voltage is greater than the first peak voltage. The second torque bandwidth is wider than the first torque bandwidth.

A stator for a rotary electric machine includes a core extending along an axis and having a series of axially extending passages arranged circumferentially about the axis. A plurality of teeth are provided with each tooth including an axially extending inner surface defining a passage and a projection extending therein. Retention devices secure each tooth to the stator. Each retention device includes a resilient member having a base extending within one of the passages of the stator and an arm extending from the base and within the passage of one of the teeth. The arm including an enlarged portion for engaging the projection to pull the tooth into engagement with the core.