双有源全桥双向直流变换器的电路平均法建模  

Modeling of Dual Active Full Bridge Bidirectional DC Converter Converter Based on Circuit Averaging Method

作　　者：孙娟 SUN Juan(Shanghai Jari Zhaoxin Information Technology Company Limited,Lianyungang 222000,China)

机构地区：[1]上海杰瑞兆新信息科技有限公司,江苏连云港222000

出　　处：《通信电源技术》2021年第9期4-8,共5页Telecom Power Technology

摘　　要：双有源全桥双向直流变换器具有高效率和高功率密度的优点,广泛应用于可再生能源发电系统。研究双有源全桥双向直流变换器的小信号数学模型,采用电路平均法建立了移相角到输出电压的小信号传递函数,并通过SIMPLIS软件验证了所得的传递函数。基于所提模型,给出了PI调节器的设计过程,最后在实验室搭建了一台6 kW的双有源全桥双向直流变换器原理样机,验证了理论分析的正确性。Dual active full bridge bidirectional DC converter is widely used in renewable energy power system for its high power efficiency and high power density.In this paper,the small-signal mathematical model of DAB is investigated.The phase-shift angle to output voltage transfer function of DAB is proposed with circuit averaging modeling approach.With SIMPLIS software,this proposed model is verified.Based on the model,the design process of the controller is presented.Finally,a 6 kW prototype is fabricated in the laboratory to validate the theoretical analysis.

关 键 词：双有源全桥双向直流变换器 移相控制 数学模型 电路平均法 

分 类 号：TM4[电气工程—电器]