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首页> 外文会议>2013 Abstracts IEEE International Conference on Plasma Science >Design of high voltage DC power supply using asymmetric three phase resonant
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Design of high voltage DC power supply using asymmetric three phase resonant

机译：基于非对称三相谐振的高压直流电源设计

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This paper describes the basic design of a 50 kW three phase converter with low ripple and high control accuracy. Based on three phase LCC-type series resonant converter (LCC-SRC) which has advantages of low ripple, relatively high-efficiency, and high-power density compare to single phase converter, the 50 kV, 1 A high voltage power supply with low ripple less than 0.1% is designed. In addition to general the merits of LCC-SRC operating at continuous conduction mode (CCM) including soft-switching, low conduction loss, and current source characteristic, the proposed scheme which uses only one phase at light-load condition by having different leg design of gate drive circuit and snubber parameter allows to overcome the operational constraint of general LCC-SRC. A distinctive design of three phase converter structure provides high-efficiency and low ripple not only rated operation but also light load condition. In order to analyze the high-performance of the proposed scheme from no-load to full-load, PSpice simulation was carried out. And comparison results with conventional LCC-SRC based on single phase structure are analyzed in view point of output ripple, IGBT losses, efficiency, and operable load range. Also, this paper deals with the designs of high voltage transformer and rectifier considering high voltage isolation. Finally, the superiority of the proposed converter is discussed in the following paper.
机译：本文介绍了具有低纹波和高控制精度的50 kW三相变频器的基本设计。基于三相LCC型串联谐振变换器（LCC-SRC），与单相变换器相比，它具有低纹波，相对较高的效率和高功率密度的优势，它具有50 kV，1 A的低电压高压电源设计的纹波小于0.1％。除了具有连续导通模式（CCM）的LCC-SRC的一般优点（包括软开关，低导通损耗和电流源特性）外，该方案还通过在不同的支路设计下在轻载条件下仅使用一个相栅极驱动电路和缓冲参数的设置可以克服一般LCC-SRC的操作限制。三相转换器结构的独特设计不仅在额定工作条件下而且在轻载条件下均提供了高效率和低纹波。为了分析所提出方案从空载到满载的高性能，进行了PSpice仿真。并从输出纹波，IGBT损耗，效率和可操作负载范围的角度分析了与基于单相结构的传统LCC-SRC的比较结果。另外，本文还考虑了高压隔离的高压变压器和整流器的设计。最后，在下文中讨论了所提出的转换器的优越性。

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