The invention relates to the technical field of electric vehicles, in particular to a direct current bus voltage regulation control method and device, a medium, a BMS system and a vehicle. The current operation condition of the motor is obtained, the input voltage corresponding to the maximum output efficiency of the motor is obtained according to the current operation condition, and the direct-current bus voltage is adjusted in real time. Different from a traditional mode of supplying power to the motor through fixed voltage, the input voltage of the motor is accurately adjusted in real time in a dynamic adjustment mode according to different operation conditions of the motor, and the problem that the loss of the motor becomes large due to excessive or insufficient voltage is solved. Under a comprehensive common working condition test, the average efficiency of the motor can be improved by 1.33%; in a 800km endurance mileage test, the electric quantity of the battery can be saved by 3.2 kWh, and the method has remarkable effect and commercial value.
本发明涉及电动汽车技术领域,特别涉及一种直流母线调压控制方法、装置、介质、BMS系统及车辆。它获取电机当前运行工况,根据当前运行工况获取电机最大输出效率对应的输入电压,实时调节直流母线电压大小。本发明不同于传统以固定电压为电机供电的方式,根据电机不同的运行工况,采用动态调节的方式实时精确调节电机的输入电压,解决了因电压过剩或不足导致的电机损耗变大的问题。在综合常用工况试验下,电机的平均效率可提高1.33%;在800km续航里程试验中,可以实现电池电量节省3.2kWh,具有显著的效果和商用价值。
DC bus voltage regulation control method and device, medium, BMS system and vehicle
一种直流母线调压控制方法、装置、介质、BMS系统及车辆
2023-09-19
Patent
Elektronische Ressource
Chinesisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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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