This paper presents two methods to derive an inverse model in harmonic forms for analyzing the interactions between the torque/current gains and currents, and for suppressing the torque ripples of a multiphase permanent magnet (PM) motor. The first method directly calculates the desired current harmonics from a pseudo-inverse model of a multiphase PM motor with no input-voltage saturation, which is independent of its rotor displacements, for torque ripple compensation. The second is an iterative-free method formulating the inverse model as an optimization problem that minimizes the copper loss subject to torque constraints while accounting for the effects of the input-voltage saturation. The formulation and significance of the two methods are illustrated with a multiphase PM motor for which published measurements are available for model validation and compared with three other commonly used current waveforms for benchmark comparison in terms of torque-ripples and copper losses.

中文翻译：

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抑制多相永磁电机转矩脉动的逆模型及谐波补偿

本文提出了两种方法来导出谐波形式的逆模型，用于分析转矩/电流增益和电流之间的相互作用，以及抑制多相永磁 (PM) 电机的转矩脉动。第一种方法直接从多相永磁电机的伪逆模型中计算所需的电流谐波，该模型没有输入电压饱和，与转子位移无关，用于转矩脉动补偿。第二种是一种无迭代方法，将逆模型制定为一个优化问题，在考虑输入电压饱和影响的同时，最大限度地减少受扭矩约束的铜损。