Improved virtual SVPWM algorithm for CMV reduction and NPV oscillation elimination in Three-Level NPC inverter

被引：3

作者：

Liu, Zhan ^{[1
]}

Zhang, Wenming ^{[1
]}

Li, Congjian ^{[1
]}

Wang, Xu ^{[1
]}

Qin, Haipeng ^{[1
]}

机构：

[1] Jiangsu Normal Univ, Sch Elect Engn & Automat, Xuzhou 221116, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2024年 / 155卷

基金：

中国国家自然科学基金;

关键词：

Wind power converter; Virtual vector; Common mode vlotage; Neutral point vlotage; COMMON-MODE VOLTAGE; PREDICTIVE CURRENT CONTROL; NEUTRAL-POINT VOLTAGE; MODULATION; STRATEGIES; VSIS;

D O I：

10.1016/j.ijepes.2023.109533

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An improved virtual space vector pulse-width modulation (IVSVPWM) strategy is presented to address simultaneously the problem of common mode voltage (CMV) with neutral point voltage (NPV) fluctuations in wind power converters. The proposed IVSVPWM method suppresses the amplitude of the common mode voltage to Udc/6 by discarding the positive small vector. Meanwhile, the new virtual vector is synthesized by selecting a vector whose neutral point current sums to zero among the retained voltage vectors. In addition, a feedback mechanism is established in the proposed strategy. According to the feedback result, the distribution coefficients of each basic vector in the virtual vector are recalculated to suppress the NPV fluctuation. Through the above control strategy, the dual effect of suppressing the CMV and balancing the NPV is achieved in the full modulation. The feasibility and effectiveness of the strategy are verified by simulation and experiment.(c) 2017 Elsevier Inc. All rights reserved.

引用

页数：11

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