This paper presents a spatial harmonics compensation method for mutually coupled switched reluctance machines (MCSRMs) with sinusoidal current excitation. The regulation by linear controllers to achieve sinusoidal currents in MCSRMs is challenging due to the substantial presence of spatial harmonics. The standard vector control with using Proportional-Integral controllers cannot effectively suppress the spatial harmonics of the current waveform due to the bandwidth limitations. In the proposed method, the essential voltage harmonics are added to the fundamental voltage component to create sinusoidal currents. The voltage harmonics are calculated from the flux linkage harmonics where voltage and flux linkage harmonics are represented as vectors in terms of Fourier coefficients. The Fourier coefficients of the flux linkage are function of direct-and quadrature-axis currents. Hence, they are in the form of two-dimensional look-up tables (LUTs). The used LUTs in the proposed method are independent of rotor position and they are obtained from the finite element analysis (FEA) model. The proposed spatial harmonics compensation method is validated using FEA and experiments for a 3-phase 12/8 MCSRM at generating and motoring modes of operation.

中文翻译：

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正弦电流激励的三相互耦开关磁阻电机的基于模型的空间谐波矢量补偿方法

本文提出了一种具有正弦电流激励的互耦开关磁阻电机（MCSRM）的空间谐波补偿方法。由于存在大量的空间谐波，因此通过线性控制器进行调节以在MCSRM中实现正弦电流具有挑战性。由于带宽限制，使用比例积分控制器的标准矢量控制无法有效地抑制电流波形的空间谐波。在提出的方法中，将基本电压谐波添加到基本电压分量以产生正弦电流。电压谐波是根据磁链谐波来计算的，其中电压和磁链谐波以傅立叶系数表示为矢量。磁链的傅立叶系数是直流和正交轴电流的函数。因此，它们采用二维查找表（LUT）的形式。所提出的方法中使用的LUT与转子位置无关，并且它们是从有限元分析（FEA）模型获得的。所提出的空间谐波补偿方法已通过有限元分析进行了验证，并针对三相12/8 MCSRM在发电和电动机运行模式下进行了实验。