The invention relates to the technical field of harmonic current suppression, and discloses a harmonic current suppression method, system and device for a permanent magnet synchronous motor and a medium. The method comprises the steps that the target speed and target power of a vehicle are obtained, and direct-current input voltage, alternating-current input voltage and input harmonic current of the input end of a motor are sampled; calculating an SVPWM modulation ratio, and extracting a stator harmonic current from the input harmonic current; judging whether the current harmonic distortion rate is in a distortion range or not; and outputting a modulation signal to an inverter, starting a filtering module to filter the input harmonic current, determining a power supply mode of an automobile power supply according to the target power of the automobile, and controlling the automobile power supply to respond to the target power of the automobile in the selected power supply mode according to the SVPWM modulation ratio. According to the method, the target power and the target speed are responded by eliminating the harmonic current and selecting the corresponding power supply mode according to the current modulation ratio, the load capacity of the inverter is improved, and the harmonic current of the inverter is reduced.
本发明涉及谐波电流抑制技术领域,公开一种永磁同步电机谐波电流抑制方法、系统、设备及介质。该方法包括:获取车辆的目标速度和目标功率,采样直流输入电压、交流输入电压以及电机输入端的输入谐波电流;计算SVPWM调制比,从输入谐波电流提取定子谐波电流;判断电流谐波畸变率是否处于畸变范围;向逆变器输出调制信号,启动滤波模块滤除输入谐波电流,依据汽车的目标功率确定汽车电源供电方式,依据SVPWM调制比控制汽车电源以所选择的供电方式响应汽车的目标功率。本发明通过消除谐波电流并依据当前调制比选择对应的供电方式来响应目标功率和目标速度,提高逆变器带载能力,减少逆变器谐波电流。
Harmonic current suppression method, system and equipment of permanent magnet synchronous motor and medium
永磁同步电机谐波电流抑制方法、系统、设备及介质
2022-04-22
Patent
Elektronische Ressource
Chinesisch
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 / 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 |
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2023
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