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Control Strategy for Parallel PWM Converters With Interleaved Discontinuous Space-Vector Modulation
Author(s): 
Pages: 71-80
Year: Issue:  10
Journal: Transactions of China Electrotechnical Society

Keyword:  环流交错断续空间矢量调制并联PWM变流器零序电流;
Abstract: 并联PWM变流器可以显著增大变流器的容量并提高交流侧的电能质量,但是变流器的直接并联容易在其内部产生环流,从而导致变流器损耗增加甚至开关器件损坏.本文以三相PWM整流器并联系统为例给出了环流的数学模型,该环流是一个存在于零轴的带直流偏移量的环流.针对环流问题,本文通过建立并联系统的小信号模型分析确定了零序电流环的设计,并采用了交错断续空间矢量调制方法来消除和抑制其对整个系统的影响.通过该方法,环流...
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