The invention discloses an electric vehicle integrated charging circuit without a winding change-over switch and an electrolytic capacitor and a control strategy of the electric vehicle integrated charging circuit. When the system is switched from a driving operation mode to a charging operation mode, only a single-phase charging access switch and a low-voltage battery charging switch are needed, and an extra motor winding change-over switch is not needed, so that a common-bus dual-three-phase bridge inverter driving circuit can be reconstructed into a single-phase PWM rectifier with active filtering and a parallel Buck converter; meanwhile, a vehicle-mounted high-voltage power battery and a vehicle-mounted low-voltage auxiliary battery are charged, a steady-state torque ripple suppression strategy is added during charging operation according to the characteristic that resistance-inductance parameters of a motor winding are asymmetric, secondary current harmonics on the direct-current side are reduced, vibration and noise during charging are effectively reduced, and the service life of the vehicle-mounted high-voltage power battery and the vehicle-mounted low-voltage auxiliary battery is prolonged. And the safety and the reliability of integrated charging of the electric automobile are improved.
本发明公开了一种无绕组切换开关和电解电容的电动汽车集成化充电电路及其控制策略。该系统由驱动运行模式切换至充电运行模式时,仅需单相充电接入开关和低压电池充电开关,而不需要额外的电机绕组切换开关,即可将共母线双三相桥逆变驱动电路重构为带有源滤波的单相PWM整流器和并联Buck变换器,同时为车载高压动力电池和低压辅助电池进行充电,并针对电机绕组阻感参数不对称特性,充电运行时加入了稳态转矩脉动抑制策略,减小了直流侧的二次电流谐波,有效降低了充电时的振动和噪声,提高了电动汽车集成充电的安全性和可靠性。
Electric vehicle charging circuit and method without winding change-over switch and electrolytic capacitor
一种无绕组切换开关和电解电容的电车充电电路及方法
2023-01-31
Patent
Electronic Resource
Chinese
IPC: | 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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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 |
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