矿用电动车混合储能系统Z源逆变器电流控制
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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。
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.
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.
引文
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[13]陈丽丽，牟龙华，许旭锋，等．储能装置运行策略及运行特性对微电网可靠性的影响[J]．电力自动化设备，2017,37(7):70-76．CHEN Lili,MU Longhua,XU Xufeng,et al.Influences of energy storage operational strategy and characteristic on microgrid reliability[J].Electric Power Automation Equipment,2017,37(7):70-76．
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[15]李武华，徐驰，禹红斌，等．直流微网系统中混合储能分频协调控制策略[J]．电工技术学报，2016,31(14):84-92．LI Wuhua,XU Chi,YU Hongbin,et al.Frequency dividing coordinated control strategy for hybrid energy storage system of DC micro-grid[J].Transactions of China Electrotechnical Society,2016,31(14):84-92.
[2]CAO J,EMADI A.A new battery/ultracapacitor hybrid energy storage system for electric,hybrid,and plug-in hybrid electric vehicles[J].IEEETransactions on Power Electronics,2012,27(1):122-132．
[3]屈艾文，陈道炼，苏倩．新颖的单级三相电压型准Z源光伏并网逆变器[J]．中国电机工程学报，2017,37(7):2091-2101．QU Aiwen,CHEN Daolian,SU Qian.Novel singlestage three-phase voltage-fed quasi-Z-source photovoltaic grid-connected inverter[J].Proceedings of the CSEE,2017,37(7):2091-2101．
[4]PENG Fangzheng,SHEN Miaosen,HOLLAND K.Application of Z-source inverter for traction drive of fuel cell-battery hybrid electric vehicles[J].IEEETransactions on Power Electronics,2007,22(3):1054-1061．
[5]LIU Yushan,HAITHAM A R,GE Baoming,et al.Impendance source power electronic converters[M].Chichester:John Wiley&Sons Ltd.,2016．
[6]张智杰，杨威，杨世彦．模块化输入串联输出独立辅助电源系统及其输入均压控制策略[J]．电工技术学报，2017,32（增刊2):156-163．ZHANG Zhijie,YANG Wei,YANG Shiyan.Inputseries output-independent auxiliary power supply system and its input voltage sharing control strategy[J].Transactions of China Electrotechnical Society,2017,32(S2):156-163．
[7]史丽萍，柳狄，李明浩，等．基于并联智能电池组件的分布式直流电源系统[J]．电源技术，2017,41(4):612-615．SHI Liping,LIU Di,LI Minghao,et al.Distributed DC power system based on parallel intelligent battery components[J].Chinese Journal of Power Sources,2017,41(4):612-615．
[8]GE Baoming,HAITHAM A R,PENG Fangzheng,et al.An energy-stored quasi-Z-source inverter for application to photovoltaic power system[J].IEEETransactions on Industrial Electronics,2013,60(10):4468-4481．
[9]胡斯登，梁梓鹏，范栋琦，等．基于Z源变换器的电动汽车超级电容-电池混合储能系统[J]．电工技术学报，2017,32(8):247-255．HU Sideng,LIANG Zipeng,FAN Dongqi,et al.Implementation of Z-source converter for ultracapacitor-battery hybrid energy storage system for electric vehicle[J].Transactions of China Electrotechnical Society,2017,32(8):247-255．
[10]李起伟．防爆电动车锂电池管理系统设计[J]．工矿自动化，2017,43(4):5-9．LI Qiwei.Design of lithium battery management system for explosion-proof electric vehicle[J].Industry and Mine Automation,2017,43(4):5-9．
[11]米阳，吴彦伟，纪宏澎，等．基于多组储能动态调节的独立直流微电网协调控制[J]．电力自动化设备，2017,37(5):170-176．MI Yang,WU Yanwei,JI Hongpeng,et al.Coordinative control based on dynamic load allocation among multiple energy storages for islanded DCmicrogrid[J].Electric Power Automation Equipment,2017,37(5):170-176．
[12]ZHU Min,HU Wensong,KAR N C.Torque-ripplebased interior permanent-magnet synchronous machine rotor demagnetization fault detection and current regulation[J].IEEE Transactions on Industry Applications,2017,53(3):2795-2804．
[13]陈丽丽，牟龙华，许旭锋，等．储能装置运行策略及运行特性对微电网可靠性的影响[J]．电力自动化设备，2017,37(7):70-76．CHEN Lili,MU Longhua,XU Xufeng,et al.Influences of energy storage operational strategy and characteristic on microgrid reliability[J].Electric Power Automation Equipment,2017,37(7):70-76．
[14]QIN Yaxiao,LI Sinan,HUI S Y R.Topologytransition control for wide-input-voltage-range efficiency improvement and fast current regulation in automotive LED applications[J].IEEE Transactions on Industrial Electronics,2017,64(7):5883-5893．
[15]李武华，徐驰，禹红斌，等．直流微网系统中混合储能分频协调控制策略[J]．电工技术学报，2016,31(14):84-92．LI Wuhua,XU Chi,YU Hongbin,et al.Frequency dividing coordinated control strategy for hybrid energy storage system of DC micro-grid[J].Transactions of China Electrotechnical Society,2016,31(14):84-92.
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