双有源桥无回流功率控制的死区影响与补偿  

Dead band effect and compensation for return-free power control of dual active bridge

作　　者：张国澎[1,2] 蒋闯闯 陶海军[1] 陈卓[3] ZHANG Guopeng;JIANG Chuangchuang;TAO Haijun;CHEN Zhuo(College of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454003,China;Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment,Henan Polytechnic University,Jiaozuo 454003,China;Research Department of Renewable Generation System,Institute of Electrical Engineering of the Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003 [2]河南理工大学河南省煤矿装备智能检测与控制重点实验室,河南焦作454003 [3]可再生能源发电系统研究部,中国科学院电工研究所,北京100190

出　　处：《浙江大学学报（工学版）》2024年第11期2406-2416,共11页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(52267018);河南省高校基本科研业务费专项资金资助项目(NSFRF210423)。

摘　　要：针对三重移相协同控制(CTPS)加入桥臂死区后,会导致双有源桥(DAB)变换器回流功率发生及软开关失效的问题,提出针对CTPS控制的死区补偿策略.通过分析CTPS控制不同模式下桥臂死区引起的变压器原副边电压及漏感电流的变化,基于回流功率产生的原理,更正了不同模式移相比之间的耦合关系,对功率传输模型及CTPS控制模式的切换条件进行修正,实现了死区对CTPS控制影响的有效控制.利用所提的补偿方案,抑制了由死区引起的回流功率,恢复了CTPS控制的软开关性能,具有较补偿前更优的电流应力.分别开展死区补偿前、后的实验,对死区影响的分析和所提出的补偿策略进行验证.A dead band compensation strategy for CTPS control was proposed aiming at the problem that the occurrence of return power as well as the failure of soft switching was caused after the addition of bridge arm dead band to the triple phase-shift cooperative control(CTPS)of dual active bridge(DAB)converter.The coupling relationships between different mode shift ratios and the power transfer model and the switching conditions of CTPS control modes were corrected based on the principle of return power generation by analyzing the changes of transformer primary and secondary side voltages and leakage currents caused by the dead band of the bridge arm in different modes of CTPS control.Then the effective control of the impact of dead band on CTPS control was realized.The proposed compensation scheme suppressed the return power caused by the dead band,restored the soft-switching performance of the CTPS control,and had better current stress than before compensation.Experiments before and after dead band compensation were conducted separately to verify the analysis of the dead band effects and the proposed compensation strategy.

关 键 词：双有源桥变换器 CTPS控制 回流功率 软开关 死区补偿 

分 类 号：TM46[电气工程—电器]