Variable gain robust control for current tracking of switched reluctance motors

被引：0

作者：

Li C.-H. ^{[1
]}

Zhao B. ^{[1
]}

Yang J.-R. ^{[2
]}

Liu J. ^{[1
]}

Yin W.-L. ^{[1
]}

机构：

[1] School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo

[2] HUANENG Weihai Power Generation Co., Ltd., Weihai

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2023年 / 27卷 / 02期

关键词：

current tracking; error compensation; magnetic saturation; robust control; switched reluctance motor; variable gain;

D O I：

10.15938/j.emc.2023.02.012

中图分类号：

学科分类号：

摘要：

In order to solve the problems of poor current tracking performance and serious torque ripple in conventional hysteresis control of switched reluctance motor (SRM), a variable gain robust controller is proposed in this paper. Based on the flux-linkage curve of the extreme position of SRM, a nonlinear analytical model of SRM considering magnetic saturation effect was established to estimate the incremental inductance and back EMF of the motor on line. In order to overcome the estimation error caused by model uncertainty, the SRM current robust controller was designed. The feedback gain was used to compensate the estimation error of incremental inductance and back EMF on line, so as to improve the current tracking control accuracy. Based on Lyapunov direct method, the SRM current controller was analyzed and designed to ensure the stability of the control system. On this basis, a torque-current converter with linear torque model and error compensation was developed to achieve accurate mapping of torque to current and indirect torque smooth control. The experimental results show that the current tracking root mean square error and torque ripple coefficient of the proposed variable gain robust controller are lower than those of the conventional hysteresis control, which has better current tracking performance and torque ripple suppression capability, and effectively improve the driving performance of the SRM. © 2023 Editorial Department of Electric Machines and Control. All rights reserved.

引用

页码：112 / 119

页数：7

共 22 条

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