Modelling, Harmonic Compensation, and Current Sharing Between Winding Sets of Asymmetric Nine-Phase PMSM

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society Pub Date : 2021-10-13 DOI:10.1109/IECON48115.2021.9589154

S. Mohamadian, Carlo Cecati

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引用次数: 1

Abstract

Several modelling approaches of multiphase machines have been proposed in literature to control the machine in healthy or faulty conditions. The variety of the models may confuse the researchers to select the proper ones. In this paper, vector space decomposition (VSD), multi-star (MS), and decoupled MS (DMS) models are developed with detailed explanations for triple three-phase (or asymmetric nine-phase) permanent magnet synchronous machine (PMSM). It is shown that the machine differential equations are not fully decoupled in DMS modelling. The presented approaches can be extended to any types of multiple three-phase PMSM. Also, two new models are introduced with the use of specific transformation matrices in order to provide the current sharing between different three-phase winding sets and for compensation of current harmonics arising from inverter nonlinearities or machine structure. These models are necessary to design the parameters of the control system in order to have the optimum dynamic response.

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非对称九相永磁同步电机绕组组间的建模、谐波补偿和电流分担

文献中提出了几种多相电机的建模方法来控制多相电机在健康或故障状态下的运行。模型的多样性可能会使研究人员在选择合适的模型时感到困惑。本文建立了三相(或非对称九相)永磁同步电机(PMSM)的矢量空间分解(VSD)、多星分解(MS)和解耦分解(DMS)模型，并给出了详细的解释。结果表明，在DMS建模中，机器微分方程不是完全解耦的。所提出的方法可以扩展到任何类型的多三相永磁同步电机。此外，还介绍了两种新的模型，利用特定的变换矩阵来提供不同三相绕组组之间的电流共享和补偿由逆变器非线性或机器结构引起的电流谐波。这些模型是设计控制系统参数以获得最优动态响应所必需的。

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IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society

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