The invention provides a power converter of an electric automobile and a control method of the power converter, the power converter comprises a three-phase full-bridge converter, a Cdc, a CLLC converter and a Ctra which are connected in parallel in sequence, the input end of the three-phase full-bridge converter is connected to a bus, and the two ends of the Ctra are connected with the positive electrode and the negative electrode of a traction battery of the electric automobile respectively; the three-phase power grid interface is connected to the bus through Jb and Jd, the single-phase power grid interface is connected to the bus through Jd, and the motor winding interface is connected to the bus through Ja; one end of the Jc-1 and one end of the Jc-2 are both connected with the primary side of the CLLC converter, and the other end of the Jc-1 and the other end of the Jc-2 are both connected with the secondary side of the CLLC converter; the positive electrode of an auxiliary battery of the electric vehicle is connected to the bus through the Jb; and the controller is used for controlling the on or off of the relays Ja, Jb, Jc-1, Jc-2 and Jd so as to control the conduction of a power switch tube in the three-phase full-bridge converter and/or the CLLC converter. The device is used for driving the electric vehicle to run and charging a battery of the electric vehicle, has good electrical isolation capability and is very high in safety and reliability.
本发明提供一种电动汽车的功率变换器及其控制方法,包括:三相全桥变换器、Cdc、CLLC变换器和Ctra依次并联,三相全桥变换器的输入端接入母线,Ctra的两端分别与电动汽车的牵引电池的正极和负极连接;三相电网接口通过Jb和Jd接入母线,单相电网接口通过Jd接入母线,电机绕组接口通过Ja接入母线;Jc‑1和Jc‑2的一端均与CLLC变换器的原边连接,另一端均与CLLC变换器的副边连接;电动汽车的辅助电池的正极通过Jb接入母线;控制器,用于控制继电器Ja、Jb、Jc‑1、Jc‑2和Jd的闭合或关断,进而控制三相全桥变换器和/或CLLC变换器中的功率开关管导通。本发明不仅用于驱动电动汽车行驶,还用于给电动汽车的电池充电,具备良好的电气隔离的能力,安全性和可靠性很高。
Power converter of electric automobile and control method of power converter
一种电动汽车的功率变换器及其控制方法
2023-06-23
Patent
Electronic Resource
Chinese
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
POWER CONVERTER, CONTROL METHOD FOR POWER CONVERTER AND ELECTRIC MOTOR VEHICLE
European Patent Office | 2016
|European Patent Office | 2022
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