An energy conversion device is provided. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier (102) and a motor coil (103). The motor coil (103) includes L sets of winding units, and each set of winding unit is connected with the reversible PWM rectifier (102), where L≥2 and is a positive integer. At least two sets of heating circuits of a to-be-heated device are formed by an external power supply (100), the reversible PWM rectifier (102), and the winding units in the motor coil (103). The energy conversion device controls the reversible PWM rectifier (102) according to a control signal, so that a current outputted from the external power supply (100) flows through at least two sets of winding units in the motor coil (103) to generate heat, and cause a vector sum of resultant current vectors of the at least two sets of the winding units on a quadrature axis of a synchronous rotating reference frame based on rotor field orientation of the motor to be zero.

A thermal management system proactively provides cooling to powered components and/or the battery of an aircraft based on expected temperature rises of the components. The thermal management system may monitor maneuver commands input by a pilot and/or may monitor a flight plan including maneuver commands and associated trigger events to determine when to take proactive steps. The thermal management system may adjust a coolant flow rate and/or may adjust a refrigerant flow rate to increase or decrease the level of cooling provided to various components.

The exemplified systems and methods provide fixed and exchangeable energy storage and delivery system in an electrified vehicle architecture with multi-mode controls. The exchangeable energy storage are configured to be optional and ultra-portable. The integration of fixed and exchangeable energy storage provides a vehicle configuration that is further optimized for size, weight, and convenience.

A motor control system for a commercial vehicle having an electric axle includes: first and second motors disposed in a rear-wheel electric axle; an accelerator position sensor for detecting a degree to which an accelerator is depressed; a wheel speed sensor detecting a wheel speed change; and a controller determining a driver's required torque on the basis of detection signals of the accelerator position sensor and the wheel speed sensor and then controlling a torque of the first motor in such a manner as to approach target torque for satisfying the driver's required torque and at the same time either controlling either a torque of the second motor to a level that compensates for a torque error of the first motor or controlling the torque of the first motor and the torque of the second motor at alternating fixed duty ratios.

The present disclosure relates to a motor drive system comprising: a fuel cell; a motor, electrically connected to the fuel cell; and, a cryogenic system arranged to contain a cryogen, wherein the fuel cell is arranged to output current to the motor, and wherein the cryogenic system is arranged to communicate a cryogen from the cryogenic system to the fuel cell.

A regenerative braking torque control system of an electric vehicle, includes a travel information setting section selects a regenerative braking level in response to a driver’s input and setting at least one driving mode among a plurality of driving modes, an in-vehicle information detector which detects in-vehicle information corresponding to a number and in-vehicle positions of occupants seated on vehicle seats, and a controller which allows driving to be performed according to the regenerative braking level selected by the travel information setting section, the controller transferring motor torque responsiveness according to the number and the in-vehicle positions of the occupants detected by the in-vehicle information detector to a motor controller for driving the vehicle by reflecting the motor torque responsiveness on regenerative braking torque.

An electrical machine comprising: at least one stator, at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, an integrated electrical differential coupled to at least one of the rotors, the at least one integrated electrical differential permitting the at least one rotor to output at least two rotational outputs to corresponding shafts, wherein the at least two rotational outputs are able to move the shafts at different rotational velocities to one another. The electrical machine is configured to fit into a housing, and that can be retrofitted into a conventional vehicle by replacing the mechanical differential.

Disclosed is a traction battery self-heating control method and a device. Acquiring a second temperature of a rotor at a current sampling time according to system parameters and a first temperature of the rotor at a previous sampling time, and estimating a third temperature of the rotor at a next sampling time according to the first temperature and the second temperature, and stopping the self-heating of the traction battery when the third temperature reaches a demagnetization temperature of the rotor. Whether to stop the self-heating of the traction battery is determined by estimating a rotor temperature under the self-heating condition, and comparing the rotor temperature with the demagnetization temperature of the rotor, and thus the self-heating control of the traction battery is realized.

A drive train (1) for a motor vehicle (100) has an electric machine (2) with a rotor (3), a stator (4) and an air gap (5) between the rotor (3) and the stator (4). The drive train (1) also has a transmission (6) and a cooling circuit (7) for conducting a coolant through the electric machine (2) and the transmission (6). The coolant is provided for lubricating and cooling the transmission (6) and for directly cooling electrical conductors of the stator (4). The cooling circuit (7) is provided in such a way that the coolant does not enter the air gap (5).

A reversible thermal management system and method for a work machine is disclosed. The system comprises a prime mover, a battery, a first circuit, and a second circuit. The battery supplies at least a portion of power of the prime mover. The first circuit circulates a glycol adapted to exchange thermal energy with one or more of an electronic component, a transmission circuit, a hydraulic circuit and the battery. The second circuit circulates a refrigerant. The second circuit, which is thermally coupled to the first circuit by at least one heat exchanger, is adapted to exchange thermal energy with air.