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基于传统的 RCD吸收电路 ,提出了一种改进的 RCD电路。该电路结构简单 ,现在已被新开发的± 50 0 kvar STATCOM所采用。现场试验结果表明它能有效限制三电平逆变器中 GTO的过电压 ,并在 GTO开关过程中运行效果良好
Based on the traditional RCD absorption circuit, an improved RCD circuit is proposed. The circuit is simple in structure and is now used by the newly developed ± 50 kvar STATCOM. Field test results show that it can effectively limit the overvoltage of GTO in the three-level inverter and work well in the GTO switching process