一种基于SiC器件的谐振开关电容变换器  

A SiC Modules Based Resonant Switched Capacitor Converter

作　　者：温飘 杨晓峰[1] 闫成章 郑琼林[1] 五十岚征辉 高久拓 WEN Piao;YANG Xiaofeng;YAN Chengzhang;ZHENG Thrillion Q;IGARASHI Seiki;TAKAKU Taku(School of Electrical Engineering,Beijing Jiaotong University,Haidian District,Beijing 100044,China;Fuji Electric Co.,Ltd.,Tokyo 141-0032,Japan)

机构地区：[1]北京交通大学电气工程学院,北京市海淀区100044 [2]富士电机系统株式会社,日本东京141-0032

出　　处：《中国电机工程学报》2020年第24期8111-8122,共12页Proceedings of the CSEE

基　　金：国家自然科学基金重点项目(51737001)。

摘　　要：提出一种谐振开关电容变换器(resonant switched capacitor converter,RSCC)拓扑,并分别采用碳化硅混合绝缘栅双极型晶体管(hybrid SiC insulated gate bipolar transistor,HSiC-IGBT)和碳化硅金属氧化物半导体场效应晶体管(SiC metal-oxide-semiconductor field-effect transistor,SiC-MOSFET)功率模块。RSCC采用模块化结构,减小开关器件电压应力,并利用谐振机理实现软开关动作,有效抑制开关电压和电流尖峰。为优化变换器输出电压,采用移相控制。首先分析RSCC的拓扑和工作原理,在此基础上开展对变换器数学模型及稳态输出特性的研究,对比HSiC-IGBT和SiC-MOSFET器件参数对变换器输出特性的影响,并通过仿真和实验对所提出的RSCC及控制策略进行验证。实验结果表明,移相控制显著改善了电容电压不均衡现象。This paper proposed a resonant switched capacitor converter(RSCC) using hybrid SiC IGBT(HSiC-IGBT) and all SiC-MOSFET power modules, respectively. RSCC adopts modular structure to reduce the voltage stress of switching devices, and uses resonance mechanism to realize soft switching transition, which can effectively suppress current and voltage spikes. Then the phase shift control was used to improve output performance. Followed by the analysis of the configuration and operation principles, detailed study of the mathematical model and output characteristics of the proposed converter were carried out. Then the effect of HSiC-IGBT and SiC-MOSFET device parameters on the proposed converter were compared. Moreover, the feasibility of the proposed RSCC and the control strategy were also verified. Experimental results show that, the phase shift control effectively improves the unbalance of DC capacitor voltages.

关 键 词：谐振开关电容变换器 SiC功率模块 软开关 移相控制 

分 类 号：TM85[电气工程—高电压与绝缘技术]