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基于直流电压注入的多脉动电压源换流器

, PP. 139-146

Keywords: 多脉动换流器,电压源换流器,附加电路,电压注入

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Abstract:

提出了一种基于直流电压注入的新型电压源换流器,该换流器由一个12脉动换流器和一个附加电路构成。附加电路通过变压器向12脉动换流器中点注入直流电压,将12脉动换流器变为60脉动换流器,换流器输出电压、电流的谐波水平很低,不需要滤波器就可以满足系统的谐波要求。换流器主电路采用基频触发,降低了开关损耗,更适合于高电压、大功率的应用场合。分析了该换流器的拓扑结构和工作原理,并使用PSCAD/EMTDC软件对其进行了仿真验证,为将来的实机制造提供了参考。

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