Multiplexing topological structure for controlling duplex-winding motor and charging on board charger

A multiplexing topological structure for controlling a duplex-winding motor and charging an on board charger, comprising:

• a battery module, a first duplex-winding motor power control module, a first duplex-winding motor winding module, a second duplex-winding motor power control module, a second duplex-winding motor winding module, an electric supply module, a PFC inverter circuit module, an inverter module, an isolation transformer module, and a rectifier module;
• wherein in a duplex-winding motor control mode, only the battery module, the first duplex-winding motor power control module, the first duplex-winding motor winding module, the second duplex-winding motor power control module and second duplex-winding motor winding module of the multiplexing topological structure are in an operating state;
• the battery module is configured to simultaneously provide direct-current drive to the first duplex-winding motor power control module and the second duplex-winding motor power control module under control of a switching device, and the first duplex-winding motor power control module and the second duplex-winding motor power control module are configured to simultaneously provide pulse-width modulation (PWM) drive to the first duplex-winding motor winding module and the second duplex-winding motor winding module, respectively;
• wherein in an on board charger charging mode, only the electric supply module, the PFC inverter circuit module, the inverter module, the isolation transformer module, the rectifier module and the battery module of the multiplexing topological structure are in an operating state;
• V-phase upper and lower bridge arms and W-phase upper and lower bridge arms of the first duplex-winding motor power control module are configured, under control of the switching device, to form an inverter circuit for inverting an output voltage of a power factor correction (PFC) inverter circuit, V-phase upper and lower bridge arms and W-phase upper and lower bridge arms of the second duplex-winding motor power control module form two-phase bridge arms, the two-phase bridge arms are connected with a second capacitor in the second duplex-winding motor power control module to constitute a rectifier circuit, and the rectifier circuit is configured to rectify a high-frequency alternating current output by an isolation transformer;
• two-phase windings in the first two-winding motor winding module are connected in series under control of the switching device to constitute a primary side of the isolation transformer, and two-phase windings in the second two-winding motor winding module are connected in series under control of the switching device to constitute a secondary side of the isolation transformer;
• the isolation transformer module is configured to provide a voltage boost by selecting a number of wire turns of two groups of three-phase windings;
• and wherein a third switch is provided between an one-phase winding in the first duplex-winding motor winding module and a star connection midpoint;
• an eighth switch is provided between a midpoint of an one-phase bridge arm in the second duplex-winding motor winding module and an one-phase winding of the second duplex-winding motor winding module;
• by controlling on-off status of the third switch and the eighth switch, the duplex-winding motor are capable of forming a star connection of windings in the duplex-winding motor control mode, and being connected in series with windings in the on board charger charging mode to form a structural switching of the primary side and the secondary side of the isolation transformer.