移相控制的双有源桥DC-DC变换器统一相量分析法
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摘要
提出一种用于分析移相控制双有源桥直流变换器的控制特点、功率的传输与交换特性的交流相量分析方法。通过傅里叶级数分解将变换器的动态方程转化为稳态相量表达式,从而建立适用于单移相控制、扩展移相控制以及双重移相控制的统一复功率模型,得出功率分布区域。根据变换器稳态相量表达式得出不同控制方式所对应相量分析图,并提出不同移相控制策略的实际控制区域。仿真和实验结果与理论分析一致,验证所建立复功率模型的准确性。该分析方法避免了传统瞬时功率积分方法建立移相控制直流变换器功率模型过程中计算复杂、模型不统一以及物理意义不明确等问题,方便了多控制自由度情况下,变换器控制策略的选择与设计。
A unified phasor analytical method is introduced in this paper to analyze the control and power characteristics of bi-directional dual-active-bridge dc-dc converter under all phase-shift control strategies.Fourier transform theory is utilized to translate time-domain differential equation of ac-ac stage in dc-dc converter into steady-state phasor expression.Hence,the phasor diagrams are plotted.The respective control regions for single-phase-shift control,extended-phase-shift control and dual-phase-shift control are proposed.A uniform complex power model is built which holds for all phase-shift controls.The simulations and experimental results show good coherence to the theoretical analysis,and also show the applicability and creditability of the proposed model and unified phasor analytical method.
A unified phasor analytical method is introduced in this paper to analyze the control and power characteristics of bi-directional dual-active-bridge dc-dc converter under all phase-shift control strategies.Fourier transform theory is utilized to translate time-domain differential equation of ac-ac stage in dc-dc converter into steady-state phasor expression.Hence,the phasor diagrams are plotted.The respective control regions for single-phase-shift control,extended-phase-shift control and dual-phase-shift control are proposed.A uniform complex power model is built which holds for all phase-shift controls.The simulations and experimental results show good coherence to the theoretical analysis,and also show the applicability and creditability of the proposed model and unified phasor analytical method.
引文
[1]Huang A Q,Crow M L,Heydt G T,et al.The future renewable electric energy delivery and management(FREEDM)system:the energy internet[J].Proceedings of the IEEE,2011,99(1):133-148.
[2]雷志方,汪飞,高艳霞,等.面向直流微网的双向DC-DC变换器研究现状和应用分析[J].中国电工技术学报,2016,31(22):137-147.Lei Zhifang,Wang Fei,Gao Yanxia,et al.Research status and application analysis of bidirectional DC-DC converters in DC micro-grids[J].Transactions of China Electrotechnical Society,2016,31(22):137-147.
[3]Kheraluwala M H,Gascoigne R W,Divan D M,et al.Performance characterization of a high-power dual active bridge DC-to-DC converter[J].IEEE Transactions on Industry Applications,1992,28(6):1294-1301.
[4]Dedoncker R W,Kheraluwala M H,Divan D M.Power conversion apparatus for DC/DC conversion using dual active bridges:US,5 027 264[P].1991.
[5]师长立,唐西胜,李宁宁,等.基于全桥隔离双向变换器的直流变换技术[J].电工技术学报,2016,31(2):121-127.Shi Changli,Tang Xisheng,Li Ningning,et al.DC changing technologies based on dual-active-bridge converter[J].Transactions of China Electrotechnical Society,2016,31(2):121-127.
[6]王聪,沙广林,王俊,等.基于双重移相控制的双有源桥DC-DC变换器的软开关[J].电工技术学报,2015,30(12):106-113.Wang Cong,Sha Guanglin,Wang Jun,et al.The analysis of zero voltage switching dual active bridge DC-DC converters based on dual-phase-shifting control[J].Power Electronics Specialists Conference,2015,30(12):106-113.
[7]程红,高巧梅,朱锦标,等.基于双重移相控制的双向全桥DC-DC变换器动态建模与最小回流功率控制[J].电工技术学报,2014,29(3):245-253.Cheng Hong,Gao Qiaomei,Zhu Jinbiao,et al.Dynamic modeling and minimum backflow power controlling of the bi-directional full-bridge DC-DC converters based on dual-phase-shifting control[J].Transactions of China Electrotechnical Society,2014,29(3):245-253.
[8]Bai H,Mi C.Eliminate reactive power and increase system efficiency of isolated bidirectional dualactive-bridge DC-DC converters using novel dualphase-shift control[J].IEEE Transactions on Power Electronics,2008,23(6):2905-2914.
[9]Inoue S,Akagi H.A bi-directional isolated DC/DC converter as a core circuit of the next-generation medium-voltage power conversion system[J].IEEE Transactions on Power Electronics,2006,22(2):535-542.
[10]Vangen K,Melaa T,Bergsmark S,et al.Efficient high-frequency soft-switched power converter with signal processor control[C]//International Telecommunications Energy Conference,Kyoto,1991:631-639.
[11]Zhou H,Khambadkone A M.Hybrid modulation for dual active bridge bi-directional converter with extended power range for ultra capacitor application[J].IEEE Transactions on Industry Applications,2009,45(4):1434-1442.
[12]Wu K,De Silva C W,Dunford W G.Stability analysis of isolated bidirectional dual active fullbridge DC-DC converter with triple phase-shift control[J].IEEE Transactions on Power Electronics,2012,27(4):2007-2017.
[13]Jain A K,Ayyanar R.PWM control of dual active bridge:comprehensive analysis and experimental verification[J].IEEE Transactions on Power Electronics,2011,26(4):1215-1227.
[14]De Doncker R W A A,Divan D M,Kheraluwala M H.A three-phase soft-switched high power density DC/DC converter for high power applications[C]//Industry Applications Society Meeting,1988:796-805.
[15]Zhao B,Song Q,Liu W,et al.Universal high-frequency-link characterization and practical fundamental-optimal strategy for dual-active-bridge DC-DC converter under PWM plus phase-shift control[J].IEEE Transactions on Power Electronics,2015,30(12):1-1.
[16]Mcgrath B P,Holmes D G.Analytical modelling of voltage balance dynamics for a flying capacitor multilevel converter[J].IEEE Transactions on Power Electronics,2008,23(2):543-550.
[17]Segaran D,Mcgrath B P,Holmes D G.Adaptive dynamic control of a bi-directional DC-DC converter[C]//Energy Conversion Congress and Exposition,Milwaukee,2010:1442-1449.
[18]Segaran D,Holmes D G,Mcgrath B P.Enhanced load step response for a bidirectional DC-DC converter[J].IEEE Transactions on Power Electronics,2011,28(1):3649-3656.
[2]雷志方,汪飞,高艳霞,等.面向直流微网的双向DC-DC变换器研究现状和应用分析[J].中国电工技术学报,2016,31(22):137-147.Lei Zhifang,Wang Fei,Gao Yanxia,et al.Research status and application analysis of bidirectional DC-DC converters in DC micro-grids[J].Transactions of China Electrotechnical Society,2016,31(22):137-147.
[3]Kheraluwala M H,Gascoigne R W,Divan D M,et al.Performance characterization of a high-power dual active bridge DC-to-DC converter[J].IEEE Transactions on Industry Applications,1992,28(6):1294-1301.
[4]Dedoncker R W,Kheraluwala M H,Divan D M.Power conversion apparatus for DC/DC conversion using dual active bridges:US,5 027 264[P].1991.
[5]师长立,唐西胜,李宁宁,等.基于全桥隔离双向变换器的直流变换技术[J].电工技术学报,2016,31(2):121-127.Shi Changli,Tang Xisheng,Li Ningning,et al.DC changing technologies based on dual-active-bridge converter[J].Transactions of China Electrotechnical Society,2016,31(2):121-127.
[6]王聪,沙广林,王俊,等.基于双重移相控制的双有源桥DC-DC变换器的软开关[J].电工技术学报,2015,30(12):106-113.Wang Cong,Sha Guanglin,Wang Jun,et al.The analysis of zero voltage switching dual active bridge DC-DC converters based on dual-phase-shifting control[J].Power Electronics Specialists Conference,2015,30(12):106-113.
[7]程红,高巧梅,朱锦标,等.基于双重移相控制的双向全桥DC-DC变换器动态建模与最小回流功率控制[J].电工技术学报,2014,29(3):245-253.Cheng Hong,Gao Qiaomei,Zhu Jinbiao,et al.Dynamic modeling and minimum backflow power controlling of the bi-directional full-bridge DC-DC converters based on dual-phase-shifting control[J].Transactions of China Electrotechnical Society,2014,29(3):245-253.
[8]Bai H,Mi C.Eliminate reactive power and increase system efficiency of isolated bidirectional dualactive-bridge DC-DC converters using novel dualphase-shift control[J].IEEE Transactions on Power Electronics,2008,23(6):2905-2914.
[9]Inoue S,Akagi H.A bi-directional isolated DC/DC converter as a core circuit of the next-generation medium-voltage power conversion system[J].IEEE Transactions on Power Electronics,2006,22(2):535-542.
[10]Vangen K,Melaa T,Bergsmark S,et al.Efficient high-frequency soft-switched power converter with signal processor control[C]//International Telecommunications Energy Conference,Kyoto,1991:631-639.
[11]Zhou H,Khambadkone A M.Hybrid modulation for dual active bridge bi-directional converter with extended power range for ultra capacitor application[J].IEEE Transactions on Industry Applications,2009,45(4):1434-1442.
[12]Wu K,De Silva C W,Dunford W G.Stability analysis of isolated bidirectional dual active fullbridge DC-DC converter with triple phase-shift control[J].IEEE Transactions on Power Electronics,2012,27(4):2007-2017.
[13]Jain A K,Ayyanar R.PWM control of dual active bridge:comprehensive analysis and experimental verification[J].IEEE Transactions on Power Electronics,2011,26(4):1215-1227.
[14]De Doncker R W A A,Divan D M,Kheraluwala M H.A three-phase soft-switched high power density DC/DC converter for high power applications[C]//Industry Applications Society Meeting,1988:796-805.
[15]Zhao B,Song Q,Liu W,et al.Universal high-frequency-link characterization and practical fundamental-optimal strategy for dual-active-bridge DC-DC converter under PWM plus phase-shift control[J].IEEE Transactions on Power Electronics,2015,30(12):1-1.
[16]Mcgrath B P,Holmes D G.Analytical modelling of voltage balance dynamics for a flying capacitor multilevel converter[J].IEEE Transactions on Power Electronics,2008,23(2):543-550.
[17]Segaran D,Mcgrath B P,Holmes D G.Adaptive dynamic control of a bi-directional DC-DC converter[C]//Energy Conversion Congress and Exposition,Milwaukee,2010:1442-1449.
[18]Segaran D,Holmes D G,Mcgrath B P.Enhanced load step response for a bidirectional DC-DC converter[J].IEEE Transactions on Power Electronics,2011,28(1):3649-3656.