Device for recovering electric energy in AC motor-driven electric vehicle

摘要

A device for recovering electric energy in an AC motor-driven electric vehicle. The device includes a battery, a single-phase or three-phase inverter, a single-phase or three-phase inductor, an AC motor, a rectifier bridge or a second inverter, and a charger. The anode and the cathode of the battery are connected to input ends of the inverter, respectively. An output end of the inverter is connected to the AC motor via a primary coil of the inductor. An output end of a secondary coil of the single-phase or three-phase inductor is connected to an input end of the rectifier bridge or the second inverter. Output ends of the rectifier bridge are connected to the anode and the cathode of the battery, respectively. The charger is connected to the anode and the cathode of the battery for supplying power from an external power supply.

主权项

1. A device for recovering electric energy in an AC motor-driven electric vehicle, the device comprising:
a) a battery; b) a first single-phase or three-phase inverter; c) a single-phase or three-phase inductor, the single-phase or three-phase inductor comprising a primary coil and a secondary coil; d) an AC motor; e) a rectifier bridge or a second single-phase or three-phase inverter; and f) a charger;wherein:
an anode of the battery and a cathode of the battery are connected to input ends of the first single-phase or three-phase inverter, respectively; an output end of the first single-phase or three-phase inverter is connected to the AC motor via the primary coil; an output end of the secondary coil is connected to an input end of the rectifier bridge or the second single-phase or three-phase inverter; output ends of the rectifier bridge or the second single-phase or three-phase inverter are connected to the anode and the cathode of the battery, respectively; the single-phase or three-phase inductor is employed to rectify the current of the device and regulate the voltage of the device; the primary coil is in series connection with the AC motor; when the AC motor works, the current on the primary coil and the voltage on the primary coil induce the secondary coil to produce an AC current and an AC voltage on the secondary coil, the AC current and the AC voltage are rectified and inverted into a direct current by the rectifier bridge or the second single-phase or three-phase inverter, and the direct current is input to the battery; the secondary coil is in series connection with the rectifier bridge or the second single-phase or three-phase inverter and the battery; and the charger is connected to the anode of the battery and the cathode of the battery.