A circuit board is in the shape of a strip and includes: in one longitudinal end portion thereof, power connection portions connected to an external power supply; in another longitudinal end portion thereof, land portions to which portions of conducting wires drawn out downwardly of a base portion are connected; and pattern portions electrically connected to the power connection portions and the land portions. The land portions include a first land portion, and a second land portion arranged adjacent to the first land portion. The pattern portions include a first pattern portion electrically connected to the first land portion, and a second pattern portion arranged adjacent to the first pattern portion, and electrically connected to the second land portion. The first pattern portion and the second land portion are arranged to overlap with each other when viewed in a widthwise direction of the circuit board. Alternatively or additionally, the first and second land portions are arranged to overlap with each other when viewed in a longitudinal direction of the circuit board.

A rotating electric machine includes at least one multi-phase coil, at least one armature core having the at least one multi-phase coil wound thereon, and at least one rotor rotatably disposed and having a plurality of magnetic poles facing the at least one armature core. The at least one multi-phase coil has at least one coil end part protruding from the at least one armature core and surrounded by at least one magnetic circuit formed in the rotating electric machine. There are a plurality of gaps formed between the at least one armature core and the at least one rotor.

A magnetless rotating electric machine has an outer stator, an inner stator, and an annular rotor interposed between the outer stator and the inner stator. A plurality of outer-inner salient pole pairs are provided in the annular rotor along a circumferential direction of an annular rotor yoke. A rotor yoke coil is wound around one side of the rotor yoke and around another side of the rotor yoke along the circumferential direction with the respective outer-inner salient pole pairs sandwiched therebetween. Rectifying elements make a magnetic pole polarity of the outer salient poles and magnetic pole polarity of the inner salient poles, which are magnetized by an induced current of the rotor yoke coil caused by magnetization of the outer stator and the inner stator, identical with each other, and also make magnetic pole polarities of the adjacent outer-inner salient pole pairs opposite each other.

An electromagnetic device is presented. The device includes a stator, a gap comprising multiple gap regions, and a rotor arranged in the gap to move relative to the stator. One of the stator and the rotor comprises a conductor array having one or more conductors each configured to carry current in a respective current flow direction. The other of the stator and the rotor comprises a flux directing assembly having multiple flux directing sections, each arranged adjacent to at least one other flux directing section and each configured to facilitate a circulating magnetic flux path about the respective flux directing section. Each pair of adjacent flux directing sections are arranged about a common gap region of the multiple gap regions and configured to direct at least part of the respective circulating magnetic flux paths across the common gap region in a substantially similar flux direction substantially perpendicular to the current flow direction.

The invention provides a synchronous-generator stator, comprising a stator ring, a stator core, a circumferential gap between the stator ring and the stator core, and a plurality of decoupling units in the gap, wherein the decoupling unit has a first plate, which is matched to a contour of the stator core, and has a second plate, which is matched to the contour of the stator ring, wherein a mat, having a cavity and an inlet valve, is provided between the first and the second plate.

A rotor for an electric machine includes a rotor main part which has at least one pole core, at least one winding device which is received on the at least one pole core, and at least one contact device which is rotationally fixed to the rotor main part and which is coupled to the at least one winding device to conduct a current. The at least one winding device includes at least one winding that is plugged onto the at least one pole core and has two winding wire ends, at least one winding wire end of which is coupled to the at least one contact device to conduct a current via at least one plug connection.

An electrically excited machine that includes a machine rotor and an exciter device for the electrical excitation of the electrically excited machine. The exciter device can include at least one energy transfer system integrated in and/or arranged inside the machine rotor. The machine rotor can include a rotor winding. The electrically excited machine can also include a machine stator. The machine stator can be arranged outside of the electrically excited machine.

A rotor shaft of an electric motor, in particular of an electrically excited synchronous machine, is composed of a shaft body and a power transmission module, the shaft body having a tubular open end that faces the power transmission module and forms a seat in which an end of the power transmission module located closer to the shaft body is interlockingly accommodated in the seat.

An electrically excited machine that includes a machine rotor and an exciter device for the electrical excitation of the electrically excited machine. The exciter device can include at least one energy transfer system integrated in and/or arranged inside the machine rotor. The machine rotor can include a rotor winding. The electrically excited machine can also include a machine stator. The machine stator can be arranged outside of the electrically excited machine.

An apparatus including a rotating member, a resolver and a mounting structure. The resolver includes a resolver stator and a resolver rotor fixedly mounted on the rotating member via a mounting structure. The mounting structure has a low magnetic relative permeability and isolates the resolver rotor from the rotating member by preventing direct contact between the rotating member and the resolver rotor. The disclosed apparatus may be an electric machine having a rotor fixed to the rotating member and be suitable for use in a hybrid vehicle. The mounting structure advantageously has a relative permeability of no greater than about 2 and may be formed out of stainless steel material. The rotating member may be a rotor hub formed out of steel material having a relative permeability of at least about 50.