Deadbeat Indirect Torque Control of Switched Reluctance Motors with Current Vector Decomposition

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Di Liu, Yunsheng Fan, Jian Liu, Guofeng Wang, Dexin Sun
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Abstract

This article presents an improved deadbeat indirect torque control (ITC) method for switched reluctance motors (SRMs) with the primary goal of reducing torque ripple. The proposed control approach comprises two parts: a torque-to-current conversion scheme that the proposed method achieves excellent current and a deadbeat controller (DBC). In the conversion scheme, a second-order SRM Fourier-series model is constructed by integrating the current vector decomposition method. Subsequently, an iterative learning controller (ILC) is designed based on this model to achieve precise conversion from the electromagnetic torque to the q-axis current, which eliminates the need for additional modeling processes. Within the proposed DBC controller, a novel recursive least squares (RLS) estimator is introduced to effectively tackle the issue of model variations. This integration enables the adaptive calibration of the predictive model, ultimately guaranteeing optimal performance in the current control. Furthermore, the consistency of the model employed in both the DBC and conversion scheme empowers the RLS to further refine the accuracy of torque-to-current conversion, thereby improving torque ripple suppression performance. Comparative experiments are conducted on a 12/8 SRM to evaluate the proposed control method’s performance. The experimental results show that the proposed method achieves excellent current tracking and torque ripple suppression performance in SRM drives.

Abstract Image

利用电流矢量分解实现开关磁阻电机的死区间接转矩控制
本文介绍了一种用于开关磁阻电机(SRM)的改进型死区间接转矩控制(ITC)方法,其主要目标是减少转矩纹波。所提出的控制方法由两部分组成:转矩-电流转换方案(所提出的方法可实现出色的电流)和死拍控制器(DBC)。在转换方案中,通过整合电流矢量分解法构建了一个二阶 SRM 傅立叶序列模型。随后,基于该模型设计了迭代学习控制器(ILC),以实现从电磁转矩到 q 轴电流的精确转换,从而省去了额外的建模过程。在所提出的 DBC 控制器中,引入了一个新颖的递归最小二乘(RLS)估计器,以有效解决模型变化问题。这种集成实现了预测模型的自适应校准,最终保证了电流控制的最佳性能。此外,DBC 和转换方案中采用的模型的一致性使 RLS 能够进一步提高扭矩到电流转换的精度,从而改善扭矩纹波抑制性能。我们在 12/8 SRM 上进行了对比实验,以评估所提出的控制方法的性能。实验结果表明,所提出的方法在 SRM 驱动器中实现了出色的电流跟踪和转矩纹波抑制性能。
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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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