三电平Cuk型AC/AC变换器设计  

Design and Simulation of Three-level Cuk AC/AC Chopper Circuit

作　　者：李文华[1] 张林林[1] 樊二珂 孟喆[1] LI Wenhua;ZHANG Linlin;FAN Erke;MENG Zhe(Electric Institute,Hebei University of Technology,Tianjin 300130,China;Beijing Accuenergy Technology Company,Ltd.,Beijing 100000,China)

机构地区：[1]河北工业大学电器研究所,天津300130 [2]北京爱博精电科技有限公司,北京100000

出　　处：《电气传动》2017年第8期38-43,共6页Electric Drive

基　　金：国家自然科学基金(51377044);河北省高等学校创新团队领军人才培育计划(LJRC003)

摘　　要：针对传统AC/AC变换器的输出电压质量不高、大电压下开关管承受能力弱、输入输出电流纹波大的问题,提出了一种新型三电平Cuk型AC/AC变换器,为减少开关管尖峰和电路损耗,又设计了一种CLC无损缓冲电路。叙述了该变换器的工作原理,设计了主要参数,采用带电流极性检测的电压闭环控制方式,建立了该变换器和CLC的电路仿真模型。仿真结果表明,该变换器具有输出三电平、输出电压THD小、电压应力减小的优势,可适用于对电压质量要求较高的中大功率高压场合。该三电平的CLC缓冲电路可以有效降低电子开关器件的尖峰电压,实现零开断。The Cuk three-level AC/AC converter was proposed in view of the problem of low output voltage quality and the switch large voltage and large input/output current ripple of traditional AC/AC converter,and a CLC lossless buffer circuit was designed for reducing spikes and circuit loss.The working principle of the converter was described,the main parameters of the converter was designed,and voltage closed loop control method with current polarity detection was adopted,three-level Cuk type AC/AC converter and CLC circuit simulation model were established.The simulation results show that the converter,with the advantages of three level output,small output voltage THD and low voltage stress,is suitable for high voltage power quality requirements in high-pressure situations.Furthermore,the CLC buffer circuit can effectively reduce the peak voltage of electronic switching devices and realize zero cut?off function.

关 键 词：低纹波 三电平 CLC缓冲电路 Cuk型 电压应力 

分 类 号：TN64[电子电信—电路与系统]