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针对能量双向流动的隔离型DC-DC变换器的设计及控制问题,以双有源全桥(DAB)型DC-DC变换器作为研究对象,以提高变换器动态性能为目标,进行系统建模及控制系统设计。在分析DAB型DC-DC变换器工作原理基础上,通过小信号建模方法推导出电流环及电压环的传递函数,并根据传递函数分别设计了PI控制器。基于TI公司TMS20F28379D控制器的控制平台,在一台500 W的样机上进行了实验验证。实验结果表明:实验波形及数据与理论分析一致,验证了DAB型DC-DC变换器的功能及控制方法的正确性。
Abstract：In order to solve the problems of design and control of bidirectional isolated DC-DC converter,the systematical design and control of a dual active bridge(DAB) converter is studied with the design purpose of improving dynamic performance. The working principle of DAB is thoroughly analyzed at first,and then the transfer functions of current loop and voltage loop are deduced based on small signal modeling method. According to the transfer functions,two PI controllers are designed. Finally,a 500 W prototype DAB is designed and tested with TI TMS20 F28379 D controller platform. Experimental results show that the experimental waveform confirms the theoretical analysis and hence verified the functionality and feasibility of the control method.
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基本信息:
DOI：10.19573/j.issn2095-0926.201904004
中图分类号:TM46
引用信息:
[1]黄雷.双有源全桥型DC-DC变换器建模及控制[J].天津职业技术师范大学学报,2019,29(04):17-20.DOI:10.19573/j.issn2095-0926.201904004.
基金信息:
天津职业技术师范大学科研发展基金资助项目（KYQD1624）;; 国家留学基金资助（201807760010）