一种基于耦合电感的二次型高增益变换器  

High Voltage Gain Coupled-inductor-based Quadratic Converter

作　　者：张建丰[1] 许建平[1] 陈章勇[2] 

机构地区：[1]西南交通大学,电气工程学院,四川成都610031 [2]电子科技大学,能源科学与工程学院,四川成都611731

出　　处：《电力电子技术》2017年第7期20-22,共3页Power Electronics

基　　金：国家自然科学基金(51177140,61371033)~~

摘　　要：针对新能源发电并网系统,提出一种基于耦合电感的二次型高增益变换器,该变换器引入了减少冗余功率(R^2P^2)原理,减小了功率的传输损耗。同时,采用耦合电感单元,减小了开关管的电压应力,通过合理设计耦合电感变比可实现变换器的高增益特性。此外,为解决漏感引起的开关管电压尖峰问题,引入无源无损吸收电路,有效吸收了漏感能量,进一步减小了开关管损耗,提高了变换器效率,降低了成本。详细分析了变换器的工作原理及工作特性,最后通过一台100 W的实验样机,验证了理论分析的正确性。Based on the requirements of the new energy power generation systems, a high gain coupled-inductor-based quadratic converter is presented.The proposed converter based on the reduced redundant power processing（RZP2） prin- ciple which can avoid the loss of power.Meanwhile,by introducing coupled-inductor cell into the converter,voltage stress of power switch is decreased and voltage gain is step-up.Furthermore, passive snubber is utilized to recycle the leakage energy and suppress voltage spike stress of the switch which can improve the efficiency of the converter and reduce the cost.Steady state and operating characteristics of the proposed converter are analyzed in detail.Exporimental results from a 100 W prototype are presented to verify the analysis of the proposed converter.

关 键 词：变换器 耦合电感 高增益 

分 类 号：TU46[建筑科学—结构工程]