The invention discloses a zero offset determination method and device, equipment and a storage medium, and belongs to the technical field of motor control. The method comprises the following steps: acquiring current data, working voltage and electrical angular frequency of a motor, wherein the current data comprises instruction current and/or stator current under a two-phase static coordinate system; and calculating a target reactive power based on the current data, the working voltage and the electrical angular frequency, i.e., calculating a zero offset based on the target reactive power. The current data, the working voltage and the electrical angular frequency are all known variables, so that the variables can be obtained without additionally injecting high-frequency signals, and the variables are not influenced by the signal-to-noise ratio, and are not limited by a low-speed working condition. Therefore, the problem of zero offset can be simply solved by calibrating the position of the rotor based on the calculated zero offset.
本申请公开了一种零位偏移量确定方法、装置、设备及存储介质,属于电机控制技术领域。本申请获取电机的电流数据、工作电压以及电角频率,所述电流数据包括指令电流,和/或者两相静止坐标系下的定子电流;基于电流数据、所述工作电压以及所述电角频率,计算目标无功功率,即可基于所述目标无功功率,计算零位偏移量。由于上述电流数据、工作电压以及电角频率均为已知变量,本申请获取上述变量无需额外注入高频信号,上述变量也不受信噪比的高低的影响,因此,并不受限于低速工况。因此,基于计算得到的零位偏移量校准转子位置,即可简单地解决零位偏移的问题。
Zero offset determination method and device, equipment and storage medium
零位偏移量确定方法、装置、设备及存储介质
2024-07-05
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 |
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