The invention discloses an energy conversion device, a power system and a vehicle. According to the energy conversion device, by adopting the energy conversion device comprising the motor coil, the bridge arm converter, the bidirectional bridge arm and the first capacitor and integrating driving and charging functions, the energy conversion device can work in a driving mode, a direct-current charging mode and an alternating-current charging mode, so that motor driving and battery charging of a vehicle can be carried out by adopting the same system; moreover, the multiplexing of the capacitor can improve the power conversion efficiency and energy utilization rate during DC charging, also can reduce the noise generated by the harmonic current of the power grid side during AC charging, reduces the pollution to the power grid, and improves the power supply quality of the power grid. High-frequency switching frequency and higher harmonics generated by the bridge arm converter can be absorbed when the motor is driven, energy is stored after the bridge arm converter is boosted, it is guaranteed that the bridge arm converter has stable and pure direct-current bus voltage, the component reuse degree is high, the system integration degree is high, the structure is simple, and therefore the system cost is reduced, and the system size is reduced.
能量转换装置、动力系统以及车辆。在本申请中,通过采用包括电机线圈、桥臂变换器、双向桥臂和第一电容集驱动和充电功能的能量转换装置,使得该能量转换装置可工作于驱动模式、直流充电模式以及交流充电模式,进而实现采用同一系统进行车辆的电机驱动和电池充电,并且电容的复用即可以提高直流充电时的电源转换效率及能量利用率,又可以减小交流充电时电网侧谐波电流所产生的噪声,以及对电网造成的污染,提高电网供电质量,并且在电机驱动可吸收由桥臂变换器产生的高频开关频率及高次谐波,通过桥臂变换器升压后储储能量,保证桥臂变换器有稳定的纯净的直流母线电压,元器件复用程度高,系统集成度高且结构简单,从而降低了系统成本,减小了系统体积。
Energy conversion device, power system and vehicle
能量转换装置、动力系统以及车辆
2021-01-15
Patent
Elektronische Ressource
Chinesisch
IPC: | 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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |