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矩阵变换器四步换流策略的优化方法研究 被引量:15

Optimization of Four-step Commutation Strategy of a Matrix Converter
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摘要 由于矩阵变换器(MC)电路没有续流路径,它的换流过程比交-直-交变换器更为复杂.换流问题是阻碍其工业应用的主要原因之一.本文在深入分析换流机理的基础上,基于双电压合成策略,对四步换流策略进行了优化.通过改变换流顺序、减小换流所需时间和调整窄脉冲等方法,既提高了换流的可靠性,也改善了波形质量.最后通过仿真方法验证了结论的正确性和有效性. Comparing with the AC-DC-AC converter, the commutation process of a matrix converter(MC) is more complicated due to having no natural free-wheeling paths. The commutation problem is one of the major reasons that there are few practical applications. In this paper, the mechanism involved in the commutation process was analyzed, and based on two line voltage synthesis, several methods for optimizing the commutation process were proposed, including to change the switching sequence, reduce the commutation times and modify the pulse width. The reliability and waveform quality were both enhanced. Simulation results demonstrate the correctness and availability of the methods.
出处 《中国矿业大学学报》 EI CAS CSCD 北大核心 2006年第5期662-666,共5页 Journal of China University of Mining & Technology
基金 中国矿业大学科技基金项目(E200427)
关键词 矩阵变换器 四步换流策略 双电压合成 波形质量 仿真 matrix converter four-step commutation strategy two line voltage synthesis waveform quality simulation
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参考文献10

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