摘要
该文在"原点开关"概念的基础上,对双电压合成控制策略下矩阵变换器共模电压的瞬时值进行了分析,总结了共模电压瞬时值产生的一般规律。提出了两种减小共模电压最大瞬时值的方法。通过改变零输出状态所对应的输入相电压的方法,分别使共模电压的最大瞬时值减小到原来的86.67％和57.73％,分析了两种方法对输出线电压局部平均值、输入相电流局部平均值及开关次数的影响。通过仿真验证了结论的正确性。
Based on the concept of 'original switch', the instantaneous value of common-mode voltage for matrix converter under the control strategy of two line voltage is analyzed in the paper and its general rules are summarized up. Two kinds of approaches are proposed by means of changing the input phase voltage corresponding with the zero-output state to reduce common-mode maximal instantaneous value of voltage. The maximal instantaneous value of common-voltage is decreased to 86.67% and 57.73% respectively. At the same time, this paper analyzes also the influence on the local averaged value in duty time of output line voltage and input phase current as well as switching times due to the change of the input phase voltage corresponding with the zero-output state. The validity of the conclusions is demonstrated by a simulation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第12期182-186,共5页
Proceedings of the CSEE
