基于回流功率优化的双重移相控制研究
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摘要
为了抑制传统单移相控制下隔离型双向全桥DC-DC变换器回流功率较大、开关管应力较大、传输效率较低等问题,提出一种基于双重移相控制下直接功率优化策略。首先,建立传统单移相与双重移相两种控制模式下功率传输的数学模型,针对不同传输功率、电压调节比,通过直接功率控制来求出最优移相角组合形式。然后,在相同传输功率的条件下建立两种控制策略功率传输和回流功率曲线图,对比分析双重移相优化控制相较于传统单移相在传输效率的优越性,且当变换器传输功率越大,优化效果越明显。最后,仿真和分析结果验证了该控制策略的有效性。相较于传统单移相控制而言,该方法不仅可以降低回流功率、减小开关管电流应力,还可以有效提高变换器的传输效率。
To restrain the problems of high backflow power, high switch stress and low transmission efficiency of isolated bidirectional full-bridge DC-DC converter under traditional single-phase-shift control, a direct power optimization strategy based on dual-phase-shift control is proposed. Firstly, this paper establishes the mathematical model of power transmission under the traditional single-phase and double-phase control modes, and finds the optimal combination of phase-shifting angles by direct power control for different transmission power and voltage regulation ratios. Then, based on the same transmission power, the power transmission and backflow power curves of the two control strategies are established.. Compared with the traditional single-phase control, the optimal control of double-phase-shifting has more advantages in transmission efficiency, and the more power the converter transmits, the more obvious the optimization effect is. Finally, the simulation and analysis results verify the effectiveness of the control strategy. Compared with the traditional single-phase control, this method can not only reduce the backflow power and the current stress of the switch, but also effectively improve the transmission efficiency of the converter.
To restrain the problems of high backflow power, high switch stress and low transmission efficiency of isolated bidirectional full-bridge DC-DC converter under traditional single-phase-shift control, a direct power optimization strategy based on dual-phase-shift control is proposed. Firstly, this paper establishes the mathematical model of power transmission under the traditional single-phase and double-phase control modes, and finds the optimal combination of phase-shifting angles by direct power control for different transmission power and voltage regulation ratios. Then, based on the same transmission power, the power transmission and backflow power curves of the two control strategies are established.. Compared with the traditional single-phase control, the optimal control of double-phase-shifting has more advantages in transmission efficiency, and the more power the converter transmits, the more obvious the optimization effect is. Finally, the simulation and analysis results verify the effectiveness of the control strategy. Compared with the traditional single-phase control, this method can not only reduce the backflow power and the current stress of the switch, but also effectively improve the transmission efficiency of the converter.
引文
[1] 唐酿,盛超,刘昌,等.电源内阻对双向DC-DC变换器性能的影响[J].广东电力,2016,29(10):24-30,68.TANG Niang,SHENG Chao,LIU Chang,et al.Influence of source impedance on performance of bidirectional DC-DC converter[J].Guangdong Electric Power,2016,29(10):24-30,68.
[2] 韦星,戴德嵩.基于安排过渡过程的新型双向DC-DC变换器PID控制[J].电力科学与工程,2017,33(8):6-12.WEI Xing,DAI Desong.New type bi-directional DC-DC converter PID control based on arranging transient process[J].Electric Power Science and Engineering,2017,33(8):6-12.
[3] 孙谦浩,王裕,宋强,等.应用于直流配电网的双向全桥直流变换器比较分析[J].电力自动化设备,2017,37(10):49-56.SUN Qianhao,WANG Yu,SONG Qiang,et al.Analysis and comparison of dual-active-bridge DC/DC converters in DC distri-bution network[J].Electric Power Automation Equipment 2017,37(10):49-56.
[4] 程红,马志鹏,王聪,等.基于傅里叶级数建模的双有源桥DC-DC变换器电流有效值分析[J].电力自动化设备,2017,37(5):14-20.CHENG Hong,MA Zhipeng,WANG Cong,et al.Effective current analysis based on Fourier series modeling for dual-active-bridge DC-DC converter[J].Electric Power Automation Equipment 2017,37(5):14-20.
[5] 侯旭,曾正,冉立,等.基于扩展移相控制的双向有源桥变换器回流功率优化[J].中国电机工程学报,2018,38(23):7004-7014,7134.HOU Xu,ZENG Zheng,RAN Li,et al.Backflow power optimization of dual active bridge converter based on extended-phase-shift control[J].Proceedings of the CSEE,2018,38(23):7004-7014,7134.
[6] ZHAO B,YU Q,SUN W.Extended-phase-shift control of isolated bidirectional DC-DC converter for power distribution in microgrid[J].IEEE Transactions on Power Electronics,2012,27(11):4667-4680.
[7] WEN H,SU B.Reactive power and soft-switching capability analysis of dual-active-bridge DC-DC converters with dual-phase-shift control[J].Journal of Power Electronics,2015,15(1):18-30.
[8] 张勋,王广柱,商秀娟,等.双向全桥DC-DC变换器回流功率优化的双重移相控[J].中国电机工程学报,2016,36(4):1090-1097.ZHANG Xun,WANG Guangzhu,SHANG Xiujuan,et al.An optimized strategy based on backflow power of bi-directional dual-active-bridge DC-DC converters with dual-phase-shifting control[J].Proceedings of the CSEE,2016,36(4):1090-1097.
[9] 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.
[10] 张国荣,罗闰三,解润生,等.双向全桥DC-DC变换器的回流功率特性分析[J].电气传动,2019,49(1):33-38.ZHANG Guorong,LUO Runsan,XIE Runsheng,et al.Reflow power characteristic analysis of bidirectional full-bridge DC-DC converter[J].Electric Drive,2019,49(1):33-38.
[11] 于德,付超,王毅,等.隔离型双向直流变换器的最小回流功率移相控制方法[J].电工技术学报,2017,32(24):126-138.YU De,FU Chao,WANG Yi,et al.The phase-shifted control method of isolated bidirectional DC-DC converter with minimum backflow power[J].Transactions of China Elec-trotechnical Society,2017,32(24):126-138.
[12] OGGIER G G,GARCíA G O,OLIVA A R.Switching control strategy to minimize dual active bridge converter losses[J].IEEE Transactions on Power Electronics,2009,24(7):1826-1838.
[13] 汪雄,刘宏勋,唐言宾.基于优化回流功率的双重移相控制研究[J].电器与能效管理技术,2017(6):67-70.WANG Xiong,LIU Hongxun,TANG Yanbin.Research on dual-phase-shifting control strategy based on optimal reflux power control[J].Electrical & Energy Management Technology,2017(6):67-70.
[14] 未红旗,周剑君,祁良甫.基于TPS的双向全桥DC-DC最小回流功率控制[J].电力电子技术,2017,51(10):14-16.WEI Hongqi,ZHOU Jianjun,QI Liangfu.Minimum backflow power control of bi-direction DC/DC converters based on triple phase-shifting control[J].Power Electronics,2017,51(10):14-16.
[15] ITOH J I,HIGA H,NAGANO T.A novel control method focusing on reactive power for a dual active bridge converter[C]//Power Electronics and Application Conference and Exposition.IEEE,2015:1020-1025.
[2] 韦星,戴德嵩.基于安排过渡过程的新型双向DC-DC变换器PID控制[J].电力科学与工程,2017,33(8):6-12.WEI Xing,DAI Desong.New type bi-directional DC-DC converter PID control based on arranging transient process[J].Electric Power Science and Engineering,2017,33(8):6-12.
[3] 孙谦浩,王裕,宋强,等.应用于直流配电网的双向全桥直流变换器比较分析[J].电力自动化设备,2017,37(10):49-56.SUN Qianhao,WANG Yu,SONG Qiang,et al.Analysis and comparison of dual-active-bridge DC/DC converters in DC distri-bution network[J].Electric Power Automation Equipment 2017,37(10):49-56.
[4] 程红,马志鹏,王聪,等.基于傅里叶级数建模的双有源桥DC-DC变换器电流有效值分析[J].电力自动化设备,2017,37(5):14-20.CHENG Hong,MA Zhipeng,WANG Cong,et al.Effective current analysis based on Fourier series modeling for dual-active-bridge DC-DC converter[J].Electric Power Automation Equipment 2017,37(5):14-20.
[5] 侯旭,曾正,冉立,等.基于扩展移相控制的双向有源桥变换器回流功率优化[J].中国电机工程学报,2018,38(23):7004-7014,7134.HOU Xu,ZENG Zheng,RAN Li,et al.Backflow power optimization of dual active bridge converter based on extended-phase-shift control[J].Proceedings of the CSEE,2018,38(23):7004-7014,7134.
[6] ZHAO B,YU Q,SUN W.Extended-phase-shift control of isolated bidirectional DC-DC converter for power distribution in microgrid[J].IEEE Transactions on Power Electronics,2012,27(11):4667-4680.
[7] WEN H,SU B.Reactive power and soft-switching capability analysis of dual-active-bridge DC-DC converters with dual-phase-shift control[J].Journal of Power Electronics,2015,15(1):18-30.
[8] 张勋,王广柱,商秀娟,等.双向全桥DC-DC变换器回流功率优化的双重移相控[J].中国电机工程学报,2016,36(4):1090-1097.ZHANG Xun,WANG Guangzhu,SHANG Xiujuan,et al.An optimized strategy based on backflow power of bi-directional dual-active-bridge DC-DC converters with dual-phase-shifting control[J].Proceedings of the CSEE,2016,36(4):1090-1097.
[9] 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.
[10] 张国荣,罗闰三,解润生,等.双向全桥DC-DC变换器的回流功率特性分析[J].电气传动,2019,49(1):33-38.ZHANG Guorong,LUO Runsan,XIE Runsheng,et al.Reflow power characteristic analysis of bidirectional full-bridge DC-DC converter[J].Electric Drive,2019,49(1):33-38.
[11] 于德,付超,王毅,等.隔离型双向直流变换器的最小回流功率移相控制方法[J].电工技术学报,2017,32(24):126-138.YU De,FU Chao,WANG Yi,et al.The phase-shifted control method of isolated bidirectional DC-DC converter with minimum backflow power[J].Transactions of China Elec-trotechnical Society,2017,32(24):126-138.
[12] OGGIER G G,GARCíA G O,OLIVA A R.Switching control strategy to minimize dual active bridge converter losses[J].IEEE Transactions on Power Electronics,2009,24(7):1826-1838.
[13] 汪雄,刘宏勋,唐言宾.基于优化回流功率的双重移相控制研究[J].电器与能效管理技术,2017(6):67-70.WANG Xiong,LIU Hongxun,TANG Yanbin.Research on dual-phase-shifting control strategy based on optimal reflux power control[J].Electrical & Energy Management Technology,2017(6):67-70.
[14] 未红旗,周剑君,祁良甫.基于TPS的双向全桥DC-DC最小回流功率控制[J].电力电子技术,2017,51(10):14-16.WEI Hongqi,ZHOU Jianjun,QI Liangfu.Minimum backflow power control of bi-direction DC/DC converters based on triple phase-shifting control[J].Power Electronics,2017,51(10):14-16.
[15] ITOH J I,HIGA H,NAGANO T.A novel control method focusing on reactive power for a dual active bridge converter[C]//Power Electronics and Application Conference and Exposition.IEEE,2015:1020-1025.