An electric machine for a drive system having a first DS rotor and a second DS rotor includes a first EM rotor rotatable about an axis in a first circumferential direction and including a plurality of magnets, the first EM rotor configured for mechanical coupling to the first DS rotor; and a second EM rotor rotatable about the axis in a second circumferential direction and including a plurality of windings, the second EM rotor configured for mechanical coupling to the second DS rotor and the plurality of magnets of the first EM rotor operably engaged with the plurality of windings of the second EM rotor.

An electric machine, including a stator and a rotor shaft having a cooling device, which shaft carries at least one slip ring, which has a lateral surface, which electrically contacts a contact element fixed on the stator, and which is at least partially accommodated in a recess of the rotor shaft, wherein an extension section of the slip ring, which is at least partially accommodated in the recess, extends beyond the lateral surface in one or both axial directions of the rotor shaft.

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.

A counter-rotating (CR) axial electric motor assembly is presented, with two oppositely rotating drive members, that is utilized to power any device that has traditionally employed an electric motor to supply rotational power.

A rotor for an electric machine has winding elements which are arranged in axially running grooves of a rotor body and having a winding head which is arranged axially next to the rotor body. The winding elements exit from the grooves in the axial direction in the region of the winding head and run in the axial direction in the region of the axial ends of the winding elements. Each of the winding elements has four curved portions in the region of the winding head. The rotor includes a plurality of tension bolts and a winding head carrier. The tension bolts connect the winding head to the winding head carrier and penetrate through the winding head radially.

A magnetically controlled wheel based on electromagnetic propulsion system includes a magnetron wheel body, a stator core, a main shaft, a bearing part, a rotor core and a wear-resistant tire, wherein the main shaft is mounted on the middle part of the magnetron wheel body; the outer end of the main shaft is connected with a shaft cap; the inner end of the main shaft is welded with a fixed shaft; the stator core is welded on the main shaft; the outer side of the stator core is provided with a plurality of protruding claw poles; the claw poles are wound with a stator winding; the rotor core is sleeved on an outer of the stator core; the inner wall of the rotor core is provided a plurality of rotor teeth poles; and the rotor teeth poles are wound with a field winding. The assembling is convenient, the shock absorption performance of the magnetic control wheel body is enhanced, the movement of the magnetic control wheel body is realized, the consumed energy is provided through conversion by electric energy, the speed of the existing vehicle is raised, the bearing piece increases rotation stability of the rotor iron core, a plurality of tire surface inner supporting pieces, a magnetic insulation ring and the wear-resisting tire, the magnetic control wheel body can be driven to rotate reversely conveniently, and steering of the magnetic control wheel body is realized.

An electric motor (100) includes an excitation stator (10), a salient-pole rotor (20) and an excitation rotor (30), any two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30) being rotatable relative to each other; and a switching actuator (50) configured to select at least one of the salient-pole rotor (20) and the excitation rotor (30) to serve as a rotor rotatable relative to the excitation stator (10) by selectively fixing relative positions of two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30).

A transmitter is configured to generate a signal carrying data. A signal splitter is configured to generate multiple copies of the signal. A slip ring includes first and second portions, one configured to rotate relative to the other. The slip ring also includes a first interface associated with the first portion and configured to receive the multiple copies of the signal. The slip ring further includes a second interface associated with the second portion. In addition, the slip ring includes multiple electrical pathways electrically coupling the first and second interfaces, where at least some of the electrical pathways are configured to transport the multiple copies of the signal from the first interface to the second interface. A signal combiner is configured to receive the multiple copies of the signal from the second interface and to generate a recovered signal. A receiver is configured to recover the data from the recovered signal.

A vehicle powertrain includes a first power-source configured to generate a first power-source torque and a multiple speed-ratio transmission configured to transmit the first power-source torque to power the vehicle. The powertrain also includes a fluid coupling having a fluid pump shaft operatively connected to the first power-source and a turbine shaft operatively connected to the multi-speed transmission. The fluid coupling is configured to multiply the first power-source torque, and transfer the multiplied first power-source torque to the multiple speed-ratio transmission. The powertrain additionally includes a second power-source configured to generate a second power-source torque and a first torque transfer system configured to connect the second power-source to the first power-source. The powertrain further includes a second torque transfer system configured to connect the second power-source to the multi-speed transmission. A motor vehicle having such a powertrain is also envisioned.

An electric machine has a stator, a rotor, and a slip ring module which is connected to a motor shaft of the electric machine. The slip ring module is equipped with at least one wire guiding channel, through which a respective contact wire is guided in order to electrically connect a rotor winding to a slip ring. A first section of the wire guiding channel runs from the slip ring in the axial direction parallel to the motor shaft. A second section of the wire guiding channel runs adjacently thereto radially outwards. An elastic seal element which surrounds the respective contact wire is arranged in or on the second section in order to seal the wire guiding channel to prevent a lubricant from entering the channel.