The invention discloses a series-parallel switching motor system and method. The system comprises a power battery, a synchronous motor, an asynchronous motor, a first switch, a second switch, a third switch, a first capacitor, a second capacitor, a first inverter circuit, a second inverter circuit and a controller. In some driving scenes, the single-phase windings of the synchronous motor and the asynchronous motor are connected in series, so that the terminal voltage of the synchronous motor is adjusted, the loss of an electric control switch is reduced, and the motor efficiency in a low-speed area is improved. Moreover, when the synchronous motor is short-circuited or is out of control at high voltage, the target switch tube of the asynchronous motor can be quickly controlled to be turned off, so that safety isolation is realized, and the safety of the motor system is further improved.
本发明公开一种串联并联切换的电机系统及方法,系统包括动力电池、同步电机、异步电机、第一开关、第二开关、第三开关、第一电容、第二电容、第一逆变电路、第二逆变电路以及控制器。在一些行车场景中,通过将同步电机与异步电机的单相绕组串联,实现对同步电机端电压的调节,降低电控开关损耗,同时提高低速区电机效率。并且,在同步电机短路或高压时失控时,异步电机的目标开关管可以快速控制关断,实现安全隔离,进一步提升电机系统的安全性。
Motor system and method for switching series connection and parallel connection
一种串联并联切换的电机系统及方法
24.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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