New Auxiliary Vector Synthesis for Expanding Linear Modulation Range With the Ability to Eliminate CMV Spikes in the SVM Three-Phase Inverters

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2025-01-13 DOI:10.1109/ACCESS.2025.3528514

Jin Huang;Kaicheng Li

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引用次数: 0

Abstract

Some strategies are used to reduce the high output common-mode voltage (CMV) in three-phase inverters with the space-vector modulation (SVM). However, these reduced CMV (RCMV) strategies may still lead to high spikes in some cases. The traditional auxiliary vectors are used to eliminate the CMV spikes in some RCMV strategies, which have the lower total harmonic distortion (THD) in RCMV SVMs. This paper proposes a new auxiliary vector synthesis SVM (NAVSSVM) strategy. In the NAVSSVM, the new auxiliary vectors are a set of vectors with variable angles. Compared to the use of traditional auxiliary vectors, the new auxiliary vector synthesis expands the linear modulation range of the inverter to the maximum when the modulation index

$M_{a}~\gt 1$

. Through optimization, the optimal NAVSSVM is found to expand the modulation region without the CMV spikes in the low

$M_{a}$

. In addition, the NAVSSVM strategy maintains the low THD characteristic of the auxiliary vector synthesis method. The feasibility and effectiveness of the NAVSSVM are verified by the simulations and experiments in a three-phase inverter.

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扩大线性调制范围的新型辅助矢量合成，消除支持向量机三相逆变器中的CMV尖峰

采用空间矢量调制技术降低了三相逆变器的高输出共模电压（CMV）。然而，这些减少CMV （RCMV）策略在某些情况下仍可能导致高峰值。在一些RCMV策略中，利用传统的辅助向量来消除CMV尖峰，使得RCMV支持向量机的总谐波失真（THD）较低。提出了一种新的辅助向量综合支持向量机（NAVSSVM）策略。在NAVSSVM中，新的辅助向量是一组角度可变的向量。与传统辅助矢量的使用相比，当调制指数$M_{a}~\gt 1$时，新型辅助矢量合成将逆变器的线性调制范围扩展到最大。通过优化，发现最优的NAVSSVM扩展了调制区域，在低$M_{a}$中没有CMV尖峰。此外，NAVSSVM策略保持了辅助矢量合成方法的低THD特性。仿真和实验结果验证了该方法的可行性和有效性。

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

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

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