Synchronous DTC for torque sub-harmonic reduction in low switching frequency induction motor drives

IF 5.4 2区计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS

Control Engineering Practice Pub Date : 2024-11-01 DOI:10.1016/j.conengprac.2024.106133

A. Benevieri, M. Marchesoni, M. Passalacqua, P. Pozzobon, L. Vaccaro

引用次数: 0

Abstract

A direct torque control (DTC) algorithm with synchronous modulation for high-power induction motors is presented in this paper. While maintaining the dynamic response and robustness of a PI-based DTC operating in the stationary reference frame, the proposed scheme is able to keep an integer PWM modulation ratio, adjusting the stator flux angle and the switching period at each control step so that the synchronicity condition is always satisfied. In this way, it is possible to achieve an improvement of the very low-frequency harmonic spectrum of the torque, in particular by reducing torque sub-harmonics. These represent one of the main problems associated with low-frequency modulation typical of high-power drives and their reduction allows to avoid drawbacks such as resonance and mechanical stresses. The performance of the proposed algorithm is evaluated with experimental tests on a small-scale test bench.

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用于降低低开关频率感应电机驱动器转矩次谐波的同步 DTC

本文提出了一种针对大功率感应电机的同步调制直接转矩控制（DTC）算法。在保持基于 PI 的 DTC 在静态参考帧中运行的动态响应和鲁棒性的同时，所提出的方案能够保持整数 PWM 调制比，在每个控制步骤中调整定子磁通角和开关周期，从而始终满足同步性条件。通过这种方式，可以改善转矩的极低频谐波频谱，特别是通过减少转矩次谐波。次谐波是与大功率驱动器典型的低频调制相关的主要问题之一，减少次谐波可以避免共振和机械应力等缺点。通过在小型试验台上进行实验测试，对所提出算法的性能进行了评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Control Engineering Practice 工程技术-工程：电子与电气

CiteScore

9.20

自引率

12.20%

发文量

183

审稿时长

44 days

期刊介绍： Control Engineering Practice strives to meet the needs of industrial practitioners and industrially related academics and researchers. It publishes papers which illustrate the direct application of control theory and its supporting tools in all possible areas of automation. As a result, the journal only contains papers which can be considered to have made significant contributions to the application of advanced control techniques. It is normally expected that practical results should be included, but where simulation only studies are available, it is necessary to demonstrate that the simulation model is representative of a genuine application. Strictly theoretical papers will find a more appropriate home in Control Engineering Practice''s sister publication, Automatica. It is also expected that papers are innovative with respect to the state of the art and are sufficiently detailed for a reader to be able to duplicate the main results of the paper (supplementary material, including datasets, tables, code and any relevant interactive material can be made available and downloaded from the website). The benefits of the presented methods must be made very clear and the new techniques must be compared and contrasted with results obtained using existing methods. Moreover, a thorough analysis of failures that may happen in the design process and implementation can also be part of the paper. The scope of Control Engineering Practice matches the activities of IFAC. Papers demonstrating the contribution of automation and control in improving the performance, quality, productivity, sustainability, resource and energy efficiency, and the manageability of systems and processes for the benefit of mankind and are relevant to industrial practitioners are most welcome.