矿用电动车混合储能系统Z源逆变器电流控制
Current control of Z-source inverter for hybrid energy storage system of mine-used electric vehicle
【索引】吴震,陈靖,党娇.矿用电动车混合储能系统Z源逆变器电流控制[J].工矿qy288千亿国际,2019,45(9):92-98.
【Reference】WU Zhen,CHEN Jing,DANG Jiao.Current control of Z-source inverter for hybrid energy storage system of mine-used electric vehicle[J].Industry and Mine Automation,2019,45(9):92-98.
【DOI】10.13272/j.issn.1671-251x.2019040091
【作者】 吴震,陈靖,党娇
【Author】 WU Zhen,CHEN Jing,DANG Jiao
【作者机构】重庆工商职业学院 智能制造与汽车学院, 重庆400052
【Unit】Institute of Intelligent Manufacturing and Automotive, Chongqing Technology and Business Institute, Chongqing 400052, China
【摘要】针对应用于矿用电动车混合储能系统的传统Z源逆变器或单开关电感Z源逆变器存在电压增益、功率密度和转换效率均不高的问题,提出了一种新型Z源逆变器。该逆变器采用基于阵列式磁集成技术的模块化开关耦合电感单元替代传统Z源逆变器的电感,提高功率密度和电压增益,并通过引入辅助软开关支路实现功率器件零电压开关,提高转换效率。对基于新型Z源逆变器的混合储能系统进行了建模,通过分析极点,发现引起系统振荡的1对共轭极点及系统振荡处频率,结合模型进行了电流控制器参数设计,推导出电流控制器比例和积分参数的设计准则。仿真与实验结果验证了该电流控制器设计准则的正确性。
【Abstract】Aiming at problems of low voltage gain, low power density and low conversion efficiency of traditional Z-source inverter or single-switch inductor Z-source inverter used in hybrid energy storage system of mine-used electric vehicle, a novel Z-source inverter was proposed. Modular switch coupled inductance units based on array magnetic integration technology is used to replace inductance of traditional Z-source inverter, so as to improve power density and voltage gain. By introducing auxiliary soft switch branch to realize zero-voltage switch of power devices, conversion efficiency is improved. Hybrid energy storage system based on the novel Z-source inverter was modeled. Through pole analysis, one pair of conjugated poles causing the system to oscillate and frequency of system oscillation were found, current controller parameters are designed with the model, and design criteria of proportional and integral parameters of current controller were derived. The simulation and experimental results verify correctness of the design criteria of the current controller.
【关键词】 矿用电动车; 混合储能系统; Z源逆变器; 电流控制; 开关耦合电感; 阵列式磁集成; 软开关
【Keywords】mine-used electric vehicle; hybrid energy storage system; Z-source inverter; current control; switch coupled inductance; array magnetic integration; soft switch
【文献出处】工矿qy288千亿国际,2019年9期
【基金】重庆市教委科学技术研究项目(KJ1737460);重庆工商职业学院科学研究项目(NDYB2018-09)
【分类号】TD611
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