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汪玉凤,祝杰,康广有.选择性谐波消除法在多电平逆变器故障调制中的应用[J].电源学报,2019,17(3):140-146
选择性谐波消除法在多电平逆变器故障调制中的应用
Application of Selective Harmonic Elimination Method to Fault Modulation of Multilevel Inverter
投稿时间:2016-11-17  修订日期:2018-10-17
DOI:10.13234/j.issn.2095-2805.2019.3.140
中文关键词:  选择性谐波消除法  多电平逆变器  故障容错  相移角
英文关键词:selective harmonic elimination(SHE)  multilevel inverter  fault-tolerance  phase shift angle
基金项目:国家自然科学基金资助项目(51307076);辽宁省教育厅一般资助项目(L2015213)
作者单位E-mail
汪玉凤 辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105  
祝杰 辽宁工程技术大学电气与控制工程学院, 葫芦岛 125105 925712018@qq.com 
康广有 国网辽宁省电力有限公司阜新供电公司, 阜新 123000  
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中文摘要:
      随着多电平逆变器应用的增多,其开关故障运行控制问题也尤为突出。将选择性谐波消除法SHE(selective harmonic elimination)应用到多电平逆变器的容错控制中,提出一种提高系统可靠性的新型方法。利用SHE方法通过只屏蔽故障单元,不降低非故障相逆变器的容量进行容错。原来的SHE方法只能修正电压幅值,通过改进SHE来修正相移角的容错控制方法,可以使逆变器输出均衡的线电压和负载电压。提出的SHE方法容错控制适用于多电平逆变器的不同拓扑结构,对逆变器的低次谐波消除效果较好,补偿谐波具有灵活性和实用性。仿真和实验结果验证了提出方案的有效性。
英文摘要:
      With the increasing applications of a multi-level inverter, the problem of switching fault control is particularly obvious. In this paper, a selective harmonic elimination(SHE) method is applied to the fault-tolerant control of the multilevel inverter, and a novel method is proposed to improve the system reliability. The SHE method is utilized to realize fault-tolerance by only shielding fault cells instead of reducing the capacities of non-fault-phase inverters. The original SHE method can only correct the voltage amplitude; in comparison, by using the fault-tolerant control method proposed in this paper, in which SHE is improved to correct the phase shift angle, the inverter can output line voltage and load voltage in a balanced manner. This method is applicable to different topologies of multi-level inverters, and it has a satisfying effect on specific sub-harmonics, indicating that its harmonic compensation is flexible and practical. Simulation and experimental results verified the effectiveness of the proposed scheme.
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