混合微网互联变流器辅助电源设计与实现
|
摘要
微网互联变流器是交直流混合微网的接口,其运行方式要求辅助电源可双网供电并实现无缝切换,而常规辅助电源无法满足要求。为了解决这一问题,文中提出双网供电的混合微网互联变流器辅助电源拓扑与无缝切换策略。辅助电源采用前后级变换架构,通过前级双电源相互供电和控制环路的自动启动,实现直流微网和交流微网间的无缝切换。最后实现了设计方案并进行实验验证,实验结果表明所设计的辅助电源可满足混合微网互联变流器的要求。
The interconnection converter in the microgrid is the interface of the AC/DC hybrid microgrid,and its operationmode requires that the auxiliary power supply can realize dual sub-network power supply and seamless switching. The convention-al auxiliary power supply cannot meet this requirement. Therefore,a topology and seamless handoff strategy for auxiliary powersupply of the interconnection converter is proposed for the hybrid microgrid with dual sub-network power supply. The front andback stage transformation architecture is adopted for the auxiliary power supply. The seamless switching between the DC mi-crogrid and AC microgrid is realized by means of mutual power supply of the front-stage dual power supplies and the automaticstartup of the control loop. The design scheme was implemented,and the experimental verification was conducted. The experi-mental results show that the designed auxiliary power supply can meet the requirements of interconnection converters in the hy-brid microgrid.
The interconnection converter in the microgrid is the interface of the AC/DC hybrid microgrid,and its operationmode requires that the auxiliary power supply can realize dual sub-network power supply and seamless switching. The convention-al auxiliary power supply cannot meet this requirement. Therefore,a topology and seamless handoff strategy for auxiliary powersupply of the interconnection converter is proposed for the hybrid microgrid with dual sub-network power supply. The front andback stage transformation architecture is adopted for the auxiliary power supply. The seamless switching between the DC mi-crogrid and AC microgrid is realized by means of mutual power supply of the front-stage dual power supplies and the automaticstartup of the control loop. The design scheme was implemented,and the experimental verification was conducted. The experi-mental results show that the designed auxiliary power supply can meet the requirements of interconnection converters in the hy-brid microgrid.
引文
[1]李德泉,徐建政,杨硕.分布式发电效益分析及其量化模型[J].电力系统保护与控制,2012,40(14):147?151.LI Dequan,XU Jianzheng,YANG Shuo. Benefits analysis ofdistributed generation and its quantitative models[J]. Powersystem protection and control,2012,40(14):147?151.
[2]胡惠雄,陈昊,吴鹏.三相AC/DC双向变流器的控制研究[J].通信电源技术,2015,32(5):5?8.HU Huixiong,CHEN Hao,WU Peng. Research on the controlof three phase AC/DC bidirectional converter[J]. Telecom pow?er technologies,2015,32(5):5?8.
[3]袁泉,金新民,曾国宏.具备多组电池接入功能的储能双向变流器系统[J].电源技术,2013,37(8):1439?1441.YUAN Quan,JIN Xinmin,ZENG Guohong. Development ofmulti?channel bi?directional power conversion system for bat?tery energy storage[J]. Chinese journal of power sources,2013,37(8):1439?1441.
[4]周广玉,高腾.直流微网供电系统控制技术研究[J].武汉工程大学学报,2017,39(4):394?402.ZHOU Guangyu,GAO Teng. Control technology of direct?cur?rent micro?grid power supply system[J]. Journal of Wuhan In?stitute of Technology,2017,39(4):394?402.
[5]张宇翔,张晓荣,张海超,等.一种非对称三电平逆变器SVP?WM调制方法[J].现代电子技术,2017,40(6):159?163.ZHANG Yuxiang,ZHANG Xiaorong,ZHANG Haichao,et al.A SVPWM method of asymmetric three?level inverter[J]. Mod?ern electronics technique,2017,40(6):159?163.
[6]孙玉巍,石新春,黄天富,等.基于双频率DCM控制的交错反激光伏并网微逆变器[J].现代电力,2013,30(4):44?49.SUN Yuwei,SHI Xinchun,HUANG Tianfu,et al. Interleavedflyback micro?inverter based on dual?frequency DCM controlscheme[J]. Modern electric power,2013,30(4):44?49.
[7]王鲜,李俊楠,罗辉,等.Mg1?xCuxFe2O4铁氧体的结构、磁性能及损耗特性[J].磁性材料及器件,2015,46(6):12?15.WANG Xian,LI Junnan,LUO Hui,et al. Microstructure,magnetic properties and power loss characteristics of Mg1?xCuxFe2O4 ferrites[J]. Journal of magnetic materials and devices,2015,46(6):12?15.
[8]陈诚海,徐鑫,马占华,等.高饱和磁通密度NiZn铁氧体材料TN35B[J].磁性元件与电源,2017(1):119?121.CHEN Chenghai,XU Xin,MA Zhanhua,et al. High Bs NiZnferrite material TN35B[J]. Magnetic element and power sup?ply,2017(1):119?121.
[9]王均,杜建华,纪婧,等.峰值电流模式控制数字移相全桥变换器的分析与设计[J].电源学报,2015,13(2):71?76.WANG Jun,DU Jianhua,JI Jing,et al. Analysis and designof digital peak?current?control scheme in phase?shift full?bridgeconverter[J]. Journal of power supply,2015,13(2):71?76.
[10]刘松斌,高建海.基于峰值电流模式的同步Buck变换器的数字控制[J].现代电子技术,2015,38(9):121?124.LIU Songbin, GAO Jianhai. Digital control of synchronousbuck converter based on peak current?mode[J]. Modern elec?tronics technique,2015,38(9):121?124.
[11]钟再敏,徐旭.车用IGBT模块及其驱动电路双脉冲实验[J].电力电子技术,2017,51(2):103?106.ZHONG Zaimin,XU Xu. Double?pulse experiment for auto?motive IGBT module and its driving circuit[J]. Power electron?ics,2017,51(2):103?106.
[12]刘国友,高云斌,陈喜明,等.SiC IGBT正向导通特性研究[J].电力电子技术,2017,51(8):42?43.LIU Guoyou,GAO Yunbin,CHEN Ximing,et al. Researchon SiC IGBT on?state characteristics simulation[J]. Powerelectronics,2017,51(8):42?43.
[2]胡惠雄,陈昊,吴鹏.三相AC/DC双向变流器的控制研究[J].通信电源技术,2015,32(5):5?8.HU Huixiong,CHEN Hao,WU Peng. Research on the controlof three phase AC/DC bidirectional converter[J]. Telecom pow?er technologies,2015,32(5):5?8.
[3]袁泉,金新民,曾国宏.具备多组电池接入功能的储能双向变流器系统[J].电源技术,2013,37(8):1439?1441.YUAN Quan,JIN Xinmin,ZENG Guohong. Development ofmulti?channel bi?directional power conversion system for bat?tery energy storage[J]. Chinese journal of power sources,2013,37(8):1439?1441.
[4]周广玉,高腾.直流微网供电系统控制技术研究[J].武汉工程大学学报,2017,39(4):394?402.ZHOU Guangyu,GAO Teng. Control technology of direct?cur?rent micro?grid power supply system[J]. Journal of Wuhan In?stitute of Technology,2017,39(4):394?402.
[5]张宇翔,张晓荣,张海超,等.一种非对称三电平逆变器SVP?WM调制方法[J].现代电子技术,2017,40(6):159?163.ZHANG Yuxiang,ZHANG Xiaorong,ZHANG Haichao,et al.A SVPWM method of asymmetric three?level inverter[J]. Mod?ern electronics technique,2017,40(6):159?163.
[6]孙玉巍,石新春,黄天富,等.基于双频率DCM控制的交错反激光伏并网微逆变器[J].现代电力,2013,30(4):44?49.SUN Yuwei,SHI Xinchun,HUANG Tianfu,et al. Interleavedflyback micro?inverter based on dual?frequency DCM controlscheme[J]. Modern electric power,2013,30(4):44?49.
[7]王鲜,李俊楠,罗辉,等.Mg1?xCuxFe2O4铁氧体的结构、磁性能及损耗特性[J].磁性材料及器件,2015,46(6):12?15.WANG Xian,LI Junnan,LUO Hui,et al. Microstructure,magnetic properties and power loss characteristics of Mg1?xCuxFe2O4 ferrites[J]. Journal of magnetic materials and devices,2015,46(6):12?15.
[8]陈诚海,徐鑫,马占华,等.高饱和磁通密度NiZn铁氧体材料TN35B[J].磁性元件与电源,2017(1):119?121.CHEN Chenghai,XU Xin,MA Zhanhua,et al. High Bs NiZnferrite material TN35B[J]. Magnetic element and power sup?ply,2017(1):119?121.
[9]王均,杜建华,纪婧,等.峰值电流模式控制数字移相全桥变换器的分析与设计[J].电源学报,2015,13(2):71?76.WANG Jun,DU Jianhua,JI Jing,et al. Analysis and designof digital peak?current?control scheme in phase?shift full?bridgeconverter[J]. Journal of power supply,2015,13(2):71?76.
[10]刘松斌,高建海.基于峰值电流模式的同步Buck变换器的数字控制[J].现代电子技术,2015,38(9):121?124.LIU Songbin, GAO Jianhai. Digital control of synchronousbuck converter based on peak current?mode[J]. Modern elec?tronics technique,2015,38(9):121?124.
[11]钟再敏,徐旭.车用IGBT模块及其驱动电路双脉冲实验[J].电力电子技术,2017,51(2):103?106.ZHONG Zaimin,XU Xu. Double?pulse experiment for auto?motive IGBT module and its driving circuit[J]. Power electron?ics,2017,51(2):103?106.
[12]刘国友,高云斌,陈喜明,等.SiC IGBT正向导通特性研究[J].电力电子技术,2017,51(8):42?43.LIU Guoyou,GAO Yunbin,CHEN Ximing,et al. Researchon SiC IGBT on?state characteristics simulation[J]. Powerelectronics,2017,51(8):42?43.