采用三相-两相平衡变压器的三相AC-DC变换器分析  

Analysis of Three-phase AC-DC Converter Using Three-phase/Two-phase Balanced Transformer

作　　者：叶思文 沈一鹤 朱佳伟 魏铭欧 杨喜军[1] 江剑峰 陈圣泽 Ye Siwen;Shen Yihe;Zhu Jiawei;Wei Mingou;Yang Xijun;Jiang Jianfeng;Chen Shengze(Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240;Marketing Service Center,State Grid Shanghai Electric Power Company,Shanghai 200051)

机构地区：[1]上海交通大学电气工程学院,上海200240 [2]国网上海市电力公司营销服务中心,上海200051

出　　处：《变频器世界》2025年第2期78-84,共7页The World of Inverters

摘　　要：基于实际电感电流与期望电感电流的斜率关系,分析了单相功率因数校正器(PFC)中升压电感过零交越失真机理,给出了几种能够提高网侧过零附近升压电感端电压的电路,使得实际电感电流上升斜率明显大于期望电感电流,无需改变原有控制结构和控制策略。分析了采用三相-两相平衡变压器(Scott变压器)以及单相功率因数校正器来实现三相AC-DC变换器的原理,并探讨了在航空供电频率应用的可能性。Based on the slope relationship between the actual inductor current and the expected inductor current,the zero crossing crossover distortion mechanism of the boost inductor in a single-phase power factor corrector(PFC)is analyzed.Several circuits are proposed to improve the terminal voltage of the boost inductor near the zero crossing of the grid voltage,so that the actual inductor current slope is significantly greater than that of the expected inductor current without changing the original control structure and control strategy.Then the principle is analyzed using a three-phase/two-phase balanced transformer(eg Scott Transformer)and a single-phase power factor corrector to implement a three-phase AC-DC converter,as well as the possibility of its application with aviation power supply frequency.

关 键 词：电感电流过零交越失真 三相-两相平衡变压器 三相AC-DC变换器 单相功率因数校正器 

分 类 号：TM423[电气工程—电器]