A powertrain for electric and plug-in hybrid vehicle applications with integrated three-phase AC charging featuring buck-boost operation and optional vehicle-to-grid (V2G) capability, along with corresponding methods and machine instruction sets for switch control. The powertrain can include of a three-phase current source converter (CSC) front-end with an associated input filter, a polarity inversion module, and in an embodiment, a dual-inverter motor drive. The dual-inverter drive is the source of both the back emf and requisite DC inductance for the CSC. A compact design is thus provided as no additional magnetics are required and the on-board cooling system required for traction mode can be re-deployed for charging and V2G mode. The powertrain is mode shifted between charging and V2G mode through an optional polarity inversion module.

A system and method for integrated charging a vehicle includes a hybrid excitation machine, operable as a traction motor and including a rotor separated by an air gap from a stator with AC windings. An AC utility line power supply is connected to the AC windings providing an electrical current to the vehicle and inducing a magnetic flux across the air gap and in the rotor. A short circuit, an open circuit, or a DC voltage may be applied to a DC winding in the stator to reduce the magnetic flux into the rotor. A field coil in the rotor may be excited with a DC voltage using a secondary coil on the rotor in a traction mode. The secondary coil is excited by the stator windings using field-oriented control in a “self-excited machine” embodiment, and is directly excited by a separate primary coil in an “externally-excited machine” embodiment.

A cooperative control method for an energy conversion apparatus is disclosed. The cooperative control method includes: acquiring a target heating power, a target driving power, and a target charging and discharging power; acquiring a first heating power of a motor coil according to the target charging and discharging power; acquiring a second heating power of the motor coil according to the target driving power; adjusting a first quadrature axis current and a first direct axis current to a target quadrature axis current and a target direct axis current when a difference between a sum of the first heating power and the second heating power and the target heating power is not within a preset range, to cause the difference between the sum of the first heating power and the second heating power and the target heating power to be within the preset range; and acquiring a sampling current value on each phase coil and a motor rotor position, and calculating a duty cycle of each phase bridge arm in a reversible pulse width modulation (PWM) rectifier.

Disclosed is a motor, a control method, a power system, and an electric vehicle. Each phase stator winding of the motor includes two sub-winding sets. When a traction battery needs to be heated, the two sub-winding sets of the motor store electrical energy and provide alternating currents to the traction battery through an inverter, so that the traction battery uses its internal resistance for heating. In addition, the two sub-winding sets generate opposite magnetic fields which cancel each other out, so that the strength of the magnetic field inside each phase stator winding and the air gap magnetic flux are reduced, thereby alleviating the heat generation and NVH problems of the motor.

A method for controlling a drivetrain of an electric vehicle during DC-charging of a traction battery. A corresponding charging circuit includes at least partially a traction inverter unit and at least partially an electric machine. The method includes controlling the traction inverter unit such that it operates as a DC-DC converter. Furthermore, a position of a rotor of the electric machine is received and based thereon, a number out of the phases of the electric machine is selected as components of the charging circuit. Additionally, the traction inverter unit is controlled such that the selected number of the phases forms part of the charging circuit. Moreover, a data processing device having means for carrying out the steps of the above method is presented. Additionally, a drivetrain and an electric vehicle are explained.

A motor driving apparatus includes: a power storage device; a motor; a first inverter; a second inverter; an external AC terminal; a third inverter including a DC terminal and an AC terminal; a transformer connected to the AC terminal of the third inverter; a first switch capable of switching the AC terminal of the first inverter to a state of being connected to either the first winding connection portion or the external AC terminal; a second switch capable of switching the AC terminal of the second inverter to a state of being connected to either the second winding connection portion or the transformer; and a third switch capable of switching the power storage device to a state of being connected to either the DC terminal of the first inverter and the DC terminal of the second inverter or the DC terminal of the third inverter.

An on-vehicle power supply system and an electric vehicle are provided. The on-vehicle power supply system includes: a power battery (10); a charge-discharge socket (20) connected with an external load (1001); a three-level bidirectional DC-AC module (30) having a first DC terminal connected with a first terminal of the power battery (10) and a second DC terminal connected with a second terminal of the power battery (10); a charge-discharge control module (50) having a first terminal connected with an AC terminal of the three-level bidirectional DC-AC module (30) and a second terminal connected with the charge-discharge socket (20); and a control module (60) connected with the charge-discharge control module (50) and the three-level bidirectional DC-AC module (30), and configured to control the three-level bidirectional DC-AC module (30) to convert a DC voltage of the power battery (10) into an AC voltage.

A control unit applied to a motor that includes a rotor having a field winding and a rotor having armature winding groups to control a field current passed through the field winding. Each of the armature winding groups is applied with a prescribed voltage. The field current is controlled so as to be a minimum field current value If_min with which a deviation between an amplitude of an induced voltage generated in the armature winding groups by rotation of the rotor, and an amplitude of the voltage applied to the armature winding groups becomes equal to or smaller than a prescribed value.

A power generating system architecture includes a prime mover, a generator component including a switched reluctance generator, the switched reluctance generator being mechanically coupled to the prime mover and having a plurality of stator pole windings, a DC power bus connected to at least one output of the switched reluctance generator, the DC power bus including a positive bus bar and a negative bus bar, at plurality of series arranged energy storage devices connecting the positive bus bar and the negative bus bar, a plurality of state of charge modules connected to the plurality of energy storage devices, each of the state of charge modules being communicatively coupled to a generator controller, and the generator controller being configured to independently control each of the stator pole windings.

A power generating system architecture includes a prime mover, a generator component including a switched reluctance generator, the switched reluctance generator being mechanically coupled to the prime mover and having a plurality of stator pole windings, a DC power bus connected to at least one output of the switched reluctance generator, the DC power bus including a positive bus bar and a negative bus bar, at plurality of series arranged energy storage devices connecting the positive bus bar and the negative bus bar, a plurality of state of charge modules connected to the plurality of energy storage devices, each of the state of charge modules being communicatively coupled to a generator controller, and the generator controller being configured to independently control each of the stator pole windings.