Abstract：This paper introduced a harmonic voltage model of permanent magnet synchronous motor (PMSM) on multiple rotating synchronous coordinates, considering one couple of positive and negative sequence harmonic current simultaneously. The model revealed the coupling relationship between positive harmonic voltage and negative harmonic current. By adding reference harmonic current computing module and feedforward harmonic voltage computing module to the traditional vector control system, a novel harmonic current injection system was established. In that system, the PI current controller only needed to track the direct component gain, while the gain of harmonic component was guaranteed by the feedforward harmonic voltage. Finally, two kinds of PMSM were selected as experiment objects of harmonic current injection. The results of harmonic current response from traditional PI current controller and the proposed harmonic current injection system were compared, which represented that feedforward harmonic voltage can improve the injection effect of high frequency harmonic current. In addition, the corresponding torque signals were also compared and analyzed in time and frequency domains. It illustrated that the harmonic current can be injected more precisely with feedforward harmonic voltage, thereby the torque ripple of PMSM can be reduced effectively.
钟再敏, 江尚, 康劲松, 陈雪平, 周英坤. 永磁同步电机谐波电压与电流的耦合模型及前馈控制[J]. 电工技术学报, 2017, 32(18): 131-142.
Zhong Zaimin, Jiang Shang, Kang Jinsong, Chen Xueping, Zhou Yingkun. A Harmonic Voltage and Current Coupling Permanent Magnet Synchronous Motor Model and Feedforward Control. Transactions of China Electrotechnical Society, 2017, 32(18): 131-142.
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2017, Vol. 32 
