基于数字滑模的双三相永磁同步电动机电流抑制

Feng Sun, Williem Agnihotri, Sumedh Dhale, S. Pradhan, Wesam Taha, B. Nahid-Mobarakeh
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引用次数: 1

摘要

本文提出了一种基于数字滑模的电流调节器,用于抑制双三相永磁同步电机(DTP)驱动器中的不良循环电流。由于循环电流在同步参考系中的高频变化和电感的非线性变化,抑制循环电流是一项具有挑战性的任务。该控制器遵循数字滑模控制原理,能够有效抑制循环电流。采用基于等效控制律和带扰动补偿的等效控制律两种模式对所提出的控制器进行性能评价。前者忽略了固有扰动的影响,而后者使用简单的单位时间步长延迟扰动近似。本文在MATLAB/Simulink中将两种方法的性能与传统PI调节器进行了比较,并对仿真结果进行了实验验证。实验证明,与PI控制器相比,所提出的两种方法都具有更好的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Digital Sliding-Mode-Based xy-Current Suppression in Dual Three-Phase PMSM Drives
This paper presents a digital sliding-mode-based current regulator for the suppression of the undesirable circulating currents in a dual three-phase (DTP) permanent magnet synchronous machine (PMSM) drive. Due to their high frequency variation in synchronous reference frame and non-linear inductance variation, the suppression of the circulating currents is a challenging task. Following the principles of digital sliding-mode control, the proposed controller is capable of effectively suppressing the circulating currents. The performance evaluation of the proposed controller is performed in two modes, viz, equivalent control law based and equivalent control law with disturbance compensation. The former ignores the effect of inherent disturbances while the latter uses a simple unit time-steps delayed disturbance approximation. In this paper,the performance of both methods is compared to a conventional PI regulator in MATLAB/Simulink, and simulation results are verified experimentally. It is proved that the two proposed methods have better performances compared with PI controller.
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