扩展移相控制的双有源桥DC-DC变换器的优化控制策略
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摘要
该文将扩展移相控制下的双有源桥DC-DC变换器分为0≤D_1≤D_2≤1与0≤D_2 This paper divided the extended-phase-shift(EPS) control of dual active bridge(DAB) DC-DC converter into two working modes, which were 0≤ D_1≤ D_2≤ 1 and 0≤ D_2 < D_1≤ 1.The current stress characteristics and zero voltage switching(ZVS) characteristics under EPS control were analyzed. An optimal scheme for achieving the minimum current stress in the whole load range under this control mode was proposed, and with this optimal scheme all active switches could also achieve ZVS in the whole load range. The current stress optimization effect and zero voltage conduction characteristics of the scheme and the existing EPS control scheme, dual-phase-shift(DPS) control scheme, and triple-phase-shift(TPS) control scheme were compared.Simultaneously, the steady-state performance and dynamic performance optimization of DAB DC-DC converter were combined. In order to enhance its dynamic performance, a direct power control scheme in the loop was proposed. The scheme was combined with the minimum current stress scheme, when the operation condition changes, it could achieve fast dynamic response while ensuring the optimization of current stress. Finally, the experimental results verify the effectiveness of the proposed scheme.
引文
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[15]Zhao Biao,Song Qiang,Liu Wenhua,et al.Currentstress-optimized switching strategy of isolated bidirectional DC-DC converter with dual-phase-shift control[J].IEEE Transactions on Industrial Electronics,2013,60(10):4458-4467.
[16]Jun Huang,Yue Wang,Li Zhuoqiang,et al.Unified triple-phase-shift control to minimize current stress and achieve full soft-switching of isolated bidirectional DC-DC converter[J].IEEE Transactions on Industrial Electronics,2016,63(7):4169-4179.
[17]Hou Nie,Song Wensheng,Wu Mingyi.Minimum-current-stress scheme of dual active bridge DC-DC converter with unified phase-shift control[J].IEEE Transactions on Power Electronics,2016,31(12):8552-8561.
[18]Bai Hai,Mi Chunting,Wang Chongwu,et al.The dynamic model and hybrid phase-shift control of a dual-active-bridge converter[C]//Proceedings of the 34th Annual Conference of IEEE Industrial Electronics.Orlando,FL,USA:IEEE,2008:2840-2845.
[19]Song Wensheng,Hou Nie,Wu Mingyi.Virtual direct power control scheme of dual active bridge DC-DCconverters for fast dynamic response[J].IEEETransactions on Power Electronics,2018,33(2):1750-1759.
[2]Xue Lingxiao,Shen Zhiyu,Boroyevich D,et al.Dual active bridge-based battery charger for plug-in hybrid electric vehicle with charging current containing low frequency ripple[J].IEEE Transactions on Power Electronics,2015,30(12):7299-7307.
[3]Zhao Biao,Song Qiang,Liu Wenhua,et al.Overview of dual-active-bridge isolated bidirectional DC-DC converter for high-frequency-link power-conversion system[J].IEEE Transactions on Power Electronics,2014,29(8):4091-4106.
[4]Pan Xuewei,Rathore A K.Novel bidirectional snubberless naturally commutated soft-switching current-fed fullbridge isolated dc/dc converter for fuel cell vehicles[J].IEEE Transactions on Industrial Electronics,2014,61(5):2307-2315.
[5]Wen Huiqing,Xiao Weidong,Su Bin.Nonactive power loss minimization in a bidirectional isolated DC-DCconverter for distributed power systems[J].IEEETransactions on Industrial Electronics,2014,61(12):6822-6831.
[6]侯聂,宋文胜,王顺亮.全桥隔离DC/DC变换器相移控制归一化及其最小回流功率控制[J].中国电机工程学报,2016,36(2):499-506.Hou Nie,Song Wensheng,Wang Shunliang.Normalization of phase shift control and minimum reflux power control of full-bridge isolated DC/DC converters[J].Proceedings of the CSEE,2016,36(2):499-506(in Chinese).
[7]吴俊娟,孟德越,申彦峰,等.双重移相控制与传统移相控制相结合的双有源桥式DC-DC变换器优化控制策略[J].电工技术学报,2016,31(19):97-105.Wu Junjuan,Meng Deyue,Shen Yanfeng,et al.Optimal control strategy of dual active bridge DC-DC converter with combined dual-phase-shift and traditional-phase-shift controls[J].Transactions of China Electrotechnical Society,2016,31(19):97-105(in Chinese).
[8]Tong Anping,Hang Lijun,Li Guojie,et al.Modeling and analysis of a dual-active-bridge-isolated bidirectional DC/DC converter to minimize RMS current with whole operating range[J].IEEE Transactions on Power Electronics,2018,33(6):5302-5316.
[9]Oggier G,Garcia G O,Oliva A R.Modulation strategy to operate the dual active bridge DC-DC converter under soft switching in the whole operating range[J].IEEETransactions on Power Electronics,2011,26(4):1228-1236.
[10]Zhao Biao,Song Qiang,Liu Wenhua,et al.Dead-time effect of the high-frequency isolated bidirectional full-bridge DC-DC converter:comprehensive theoretical analysis and experimental verification[J].IEEETransactions on Power Electronics,2014,29(4):1667-1680.
[11]Zhao Biao,Song Qiang,Liu Wenhua,et al.Transient DCbias and current impact effects of high-frequency-isolated bidirectional DC-DC converter in practice[J].IEEETransactions on Power Electronics,2016,31(4):3203-3216.
[12]李婧,袁立强,谷庆,等.一种基于双有源桥变换器损耗模型的效率优化方法[J].电工技术学报,2017,32(14):66-77.Li Jing,Yuan Liqiang,Gu Qing,et al.An efficiency optimization method in dual active bridge based on loss model[J].Transactions of China Electrotechnical Society,2017,32(14):66-77(in Chinese).
[13]张勋,王广柱,王婷.双向全桥DC-DC变换器基于电感电流应力的双重移相优化控制[J].电工技术学报,2016,31(22):100-106.Zhang Xun,Wang Guangzhu,Wang Ting.Optimized control based on current-stress of bi-directional full-bridge DC-DC converters with dual-phase-shifting control[J].Transactions of China Electrotechnical Society,2016,31(22):100-106(in Chinese).
[14]Zhao Biao,Yu Qingguang,Sun Wei xin.Extendedphase-shift control of isolated bidirectional DC-DCconverter for power distribution in microgrid[J].IEEETransactions on Power Electronics,2012,27(11):4667-4680.
[15]Zhao Biao,Song Qiang,Liu Wenhua,et al.Currentstress-optimized switching strategy of isolated bidirectional DC-DC converter with dual-phase-shift control[J].IEEE Transactions on Industrial Electronics,2013,60(10):4458-4467.
[16]Jun Huang,Yue Wang,Li Zhuoqiang,et al.Unified triple-phase-shift control to minimize current stress and achieve full soft-switching of isolated bidirectional DC-DC converter[J].IEEE Transactions on Industrial Electronics,2016,63(7):4169-4179.
[17]Hou Nie,Song Wensheng,Wu Mingyi.Minimum-current-stress scheme of dual active bridge DC-DC converter with unified phase-shift control[J].IEEE Transactions on Power Electronics,2016,31(12):8552-8561.
[18]Bai Hai,Mi Chunting,Wang Chongwu,et al.The dynamic model and hybrid phase-shift control of a dual-active-bridge converter[C]//Proceedings of the 34th Annual Conference of IEEE Industrial Electronics.Orlando,FL,USA:IEEE,2008:2840-2845.
[19]Song Wensheng,Hou Nie,Wu Mingyi.Virtual direct power control scheme of dual active bridge DC-DCconverters for fast dynamic response[J].IEEETransactions on Power Electronics,2018,33(2):1750-1759.