A rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle, the rotor structure includes a rotor body and an outer layer permanent magnet. The rotor body is provided with a magnetic steel slot group. The magnetic steel slot group includes an outer layer magnetic steel slot. The outer layer magnetic steel slot includes a plurality of magnetic steel slot segments. At least two of the plurality of magnetic steel slot segments are arranged in a radial direction of the rotor body and are disposed oppositely at both sides of a direct axis of the rotor body. The outer layer permanent magnet is arranged in the magnetic steel slot segment, a length of the outer permanent magnet disposed in the two oppositely arranged magnetic steel slot segments is L, and a maximum distance between the two oppositely arranged magnetic steel slot segments is C, where 0.8×C≤L.

A modular rack system and method includes a rack having plural electrical interfaces, and plural module panels configured to mate with the electrical interfaces of the rack. The module panels have one or more of a common exterior size or a common exterior shape. At least two of the module panels have different internal electrical components configured to perform different operations. The rack is configured to be conductively coupled with a power delivery system of a vehicle and the module panels are configured to modify electric current prior to the electric current being supplied to the power delivery system of the vehicle.

Disclosed are thermal management fluids for electric systems and methods of application. An example thermal management fluid may comprise: a base oil as a major component, wherein the base oil has both of the following enumerated properties: (i) a branch content of about 15 mol. % to about 30 mol. %; and (ii) a naphthene content of about 30 wt. % or less.

The disclosure relates to a method for actuating an electric drive of a trailer vehicle with a towing vehicle, including the steps: determining a current slip of at least one driven wheel of a towing vehicle pulling the trailer vehicle, determining an expected slip for the driven wheel of the towing vehicle, determining an acceleration demand depending on the determined current slip and the determined expected slip and actuating the electric drive depending on the acceleration demand. The disclosure also relates to a control unit for executing the method, a towing vehicle, a trailer vehicle and a vehicle combination.

The present invention relates to rotary devices, such as an electric motors and power generators, having dual and multiple air gaps. Disclosed is a rotary device characterized by comprising a rotor part, a stator part, an inner support part, and a housing part. The inner support part is coupled and fixed to the housing part. The stator part includes: an inner stator part which includes an inner iron core coupled and fixed to the inner support part, and an inner wire wound on the inner iron core; and an outer stator part which includes an outer iron core coupled and fixed to the inner circumferential surface of the housing part, and an outer wire wound on the outer iron core. The rotor part includes: a rotor-side magnetic force application part which has, on the inner circumferential side, the inner stator part and an inner air gap, and has, on the outer circumferential side, the outer stator part and an outer air gap; and a pair of end support parts installed at respective ends of the rotor-side magnetic force application part. At least one among the pair of end support parts is coupled and fixed to a rotary shaft which is rotatably installed in the housing part.

A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt %, Si: 1.5 to 4.0%, Al: 0.1 to 1.5%, Mn: 0.05 to 1.5%, Sn: 0.015 to 0.1%, P: 0.005 to 0.05%, Ga: 0.001 to 0.004%, and Bi: 0.0005 to 0.003%, and the balance of Fe and inevitable impurities. An area fraction of texture in a {118}//ND orientation is higher than that of texture in a {111}///ND orientation.

A temperature control system includes: a first cooling circuit, where a first cooling medium is circulated in the first cooling circuit, and the first cooling circuit is configured to cool a first structural unit; a second cooling circuit, where a second cooling medium is circulated in the second cooling circuit, and the second cooling circuit is configured to cool a second structural unit; and a heat exchanger, separately connected to the first cooling circuit and the second cooling circuit, and configured to perform heat exchange between the first cooling medium and the second cooling medium, where the first cooling circuit includes a bypass branch, and the bypass branch is connected in parallel to the heat exchanger. According to the temperature control system, heat dissipation efficiency for an inverter and an overall heat dissipation capability for a powertrain are improved.

A method for controlling the cruising speed of a hybrid or electric propulsion vehicle includes detecting a forward travel speed of the vehicle, identifying a downhill forward travel condition of the vehicle, activating a control of the downhill cruising speed following said identification of said downhill forward travel condition, determining a reference speedy for the vehicle and calculating a charging current for the battery pack generated by the electric motor as a function of a deviation between said reference speed and the detected forward travel speed of the vehicle. The step of identifying a downhill forward travel condition of the vehicle includes calculating a parameter representative of said downhill condition as a function of the detected forward travel speed and the motor current.

A system and method uses field-oriented control (FOC) of a multi-phase motor to prevent thermal runaway of the thermal battery that powers the motor. An offset is applied to the flux command signal to ensure that the power level drawn from the thermal battery exceeds a minimum power level to avoid thermal runaway. This is done without any additional hardware, hence the reduced cost, inefficiencies and packaging volume of such hardware. In different modes, the offset is applied to prevent thermal runaway regardless of torque production, when the system is in failure and torque production is zero, for variable and intermittent periods when torque production is zero, and during normal operation to augment power drawn to produce torque.

A system and method of active endturn cooling of an electric motor of a vehicle is provided. The method comprises providing a motor having a coolant nozzle and a cam, and measuring speed, lateral acceleration, and road tilt angle of coolant due to road tilt. The method further comprises calculating coolant angle and coolant acceleration angle based on the road tilt angle and the lateral acceleration if the speed is greater than zero. The method further comprises comparing the coolant angle with a critical angle. The method further comprises calculating a first control angle and a first coolant distance based on the road tilt angle and the lateral acceleration of the vehicle if the acceleration angle is greater than the critical angle. The method further comprises determining a cam position based on the first control angle. The method further comprises moving the cam to the position to move the nozzle and compensate for the lateral acceleration such that coolant drops within a target area of the motor.