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电力系统桥式短路故障限流器研究

Keywords: 限流器,电力系统,短路故障,桥式电路

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Abstract:

提出一种新颖的限制电力系统故障电流的桥式电路,对该电路的工作原理、电路结构和工作方式进行了详细的分析,并给出了限流电路中各支路的电流关系,对电路的直通、开路和变阻3种工作方式作出说明,重点分析了在变阻工作模式下,对负载短路电流的限制和分流.考虑了当桥式限流电路中的开关管栅极加入脉冲信号后,对负载电压和电流的谐波影响,以及限流电感中串入电阻后对开关管占空比的不同要求、对桥式电路分流性能的影响等.最后给出了部分仿真波形和计算值.

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