高压直流通信电源中高频开关整流模块

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摘要随着计算机和通信行业的快速发展, 高压直流供电系统目前已成为通信电源的一个新的研究方向。本文针对高压直流供电系统中高频开关整流模块的硬件拓扑和关键控制策略开展研究, 整流模块前级采用基于VIENNA拓扑的三相PFC, 本文分析了VIENNA整流器的工作原理, 研究了中点平衡控制策略；整流模块后级采用新型ZVS三电平半桥DC-DC变换器以改善轻载工作时ZVS的效果, 并针对轻载条件下滞后管软开关优化要求提出一种改进型PWM控制策略, 同时给出了各种工作条件下关键控制环路设计过程；最后设计了一台5.8kW的HVDC整流模块样机并进行了相关的实验。

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	陈新
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关键词 ：高压直流供电系统, VIENNA整流器, 三电平半桥DC-DC变换器, 零电压开关

Abstract：With the rapid development of communication industry, high voltage DC power supply system has become a new research direction of communication power. The paper studies the high-frequency switching rectifier for high voltage DC power supply system, mainly including the hardware topology and key control strategy. Firstly, the front-end converter is applied by a three-phase PFC rectifier, and the rectifier with VIENNA topology and related control strategies including capacitor midpoint balance control are analyzed respectively. Secondly, a novel ZVS topology is proposed as the back-end converter to optimize the ZVS effect, and an improved PWM control strategy is depicted to optimize the control scheme of lag switching according in light load case. At the same time, the key control loop under a variety of working conditions is depicted. Finally a 6 kW prototype of HVDC rectifier is developed to evaluate the previous theoretical analysis.

Key words： HVDC power supply system VIENNA rectifier three-level half bridge DC-DC converter ZVS voltage switching

收稿日期: 2012-09-10 出版日期: 2014-06-27

PACS:

TM461

作者简介: 陈新, 男, 1973年生, 博士, 副教授, 研究方向为新能源发电、微电网系统控制和开关通信电源; 王赟程, 男, 1989年生, 博士研究生, 研究方向为微电网应用和高压直流控制技术。

引用本文:

陈新, 王赟程, 宋卫平, 马广积. 高压直流通信电源中高频开关整流模块[J]. 电工技术学报, 2014, 29(4): 152-159. Chen Xin, Wang Yuncheng, Song Weiping, Ma Guangji. High Frequency Switching Rectifier in HVDC Power Supply System. Transactions of China Electrotechnical Society, 2014, 29(4): 152-159.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I4/152

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