The invention discloses a topological structure of a single-phase isolation type integrated vehicle-mounted charging system without an electrolytic capacitor and a control method of the topological structure, the system multiplexes a driving motor stator winding on the basis of an open winding driving system of an electric vehicle, and when the system is switched from a driving operation mode to a charging operation mode, the driving motor stator winding is switched to the charging operation mode. An open winding permanent magnet motor driving system is reconstructed into an isolated AC/DC converter without an electrolytic capacitor through a change-over switch, the isolated AC/DC converter comprises a synchronous rectifier, a dual-active-bridge converter and an active filtering device, phase shifting is controlled through matching of transmission power and network side input power, power factor correction is achieved, and power factor correction is achieved through winding inductive current control. According to the vehicle-mounted power battery integrated vehicle-mounted charging system, the inherent secondary power pulsation is filtered out to realize active filtering, and the torque pulsation suppression of a multiplexing motor winding is realized through a magnetic flux balance method, so that the vehicle-mounted power battery integrated vehicle-mounted charging system with an isolation charging characteristic is obtained, the integrated design of a driving charging function is realized, and the reliability and the safety of the integrated charging system are improved.
本发明公开了一种无电解电容单相隔离型集成化车载充电系统拓扑结构及其控制方法,该系统在电动汽车开绕组驱动系统的基础上,复用驱动电机定子绕组,在系统由驱动运行模式切换至充电运行模式时,通过切换开关将开绕组永磁电机驱动系统重构为一种无电解电容的隔离型AC/DC变换器,包括同步整流器、双有源桥变换器和有源滤波装置,通过传输功率和网侧输入功率的匹配控制移相比,实现功率因数校正,通过绕组电感电流控制,滤除固有二次功率脉动实现有源滤波,通过磁通平衡法实现对复用电机绕组的转矩脉动抑制,从而获得具有隔离充电特性的车载动力电池集成化车载充电系统,实现驱动充电功能的一体化设计,并提高了集成充电系统的可靠性和安全性。
Topological structure of single-phase isolation type integrated vehicle-mounted charging system without electrolytic capacitor and control method of topological structure
一种无电解电容单相隔离型集成化车载充电系统拓扑结构及其控制方法
15.04.2025
Patent
Elektronische Ressource
Chinesisch
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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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