基于随机双区间高频方波电压注入的IPMSM驱动无传感器控制降噪方法

As a sensorless control method of interior permanent magnet synchronous motors (IPMSMs) at zero and low speeds, high-frequency square-wave voltage injection (HFSVI) method faces the challenge of producing harsh audible noise. To address this issue, a novel random dual-interval high-frequency square-wave voltage injection (RDI-HFSVI) method is proposed in this article. First, the mechanism of HFSVI...