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《Transactions of China Electrotechnical Society》 2006-12
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Cascade Multilevel Converter Based on Sample Time Staggered Space Vector Modulation and Its Application to Shunt Active Power Filter

Wang Liqiao Wu Weiyang (Yanshan University Qinhuangdao 066004 China)  
Sample Time Staggered Space Vector Modulation (STS-SVM) is a novel switch modulation strategy fit for large capacity power electronic equipment. The principle of STS-SVM is introduced. The equivalent relationship between multi-modular converters and cascade multilevel converters was discussed. The implementation method of STS-SVM used in cascade multilevel converters was presented with experimental verification. The advantages over other modulation strategies of STS-SVM are discussed. Combining the advantages of STS-SVM and cascade multilevel converters, a shunt active power filter with STS-SVM based cascade multilevel converters was proposed. Its control system of both AC side and DC side was designed. Simulation and experiment results indicate that the shunt active power filter with STS-SVM based cascade multilevel converters, which is of fast dynamic response, can compensate load harmonics and passive power precisely and efficiently at lower switch frequency.
【Fund】: 国家自然科学基金资助重点项目(50237020);; 燕山大学博士基金资助项目(B155)。
【CateGory Index】: TM461;TN713.8
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