基于直流配电中心的DAB直流变压器拓扑与参数设计研究
|
摘要
以城市配电网柔性互联示范工程为背景,首先总结出了未来配电网将呈现交流配电网、直流配电网和微电网深度融合的局面,而直流配电网作为交流配电网和微电网之间的重要部分将得到极大地发展。直流变压器具有高低压两个直流系统的高压隔离、功率的双向控制和直流微电网直流母线电压控制等功能,在直流配电网中具有重要作用。因此主要探讨了基于双有源功率单元(DAB)的双向直流变压器,并设计了一种DAB单元模块拓扑结构和组件参数,最后搭建了基于MATLAB/Simulink的DAB直流变压器仿真模型,验证拓扑结构和组件参数的合理性。实验结果表明,所设计的DAB直流变压器具有较好的动态和静态特性,能够满足示范工程要求。
In the context of the flexible interconnection demonstration project of urban distribution network,the paper first summarizes the situation that the distribution network will present the deep integration of AC distribution network,DC distribution network and micro-grid,and DC distribution network as AC distribution.An important part between the grid and the microgrid will be greatly developed.The DC transformer has the functions of high voltage isolation of high and low voltage two DC systems,bidirectional control of power and DC bus voltage control of DC microgrid,which plays an important role in the DC distribution network.Therefore,the bidirectional DC transformer based on dual active power unit(DAB)is mainly discussed,and a DAB unit module topology and component parameters are designed.Finally,a DAB DC transformer simulation model based on MATLAB/Simulink is built.To verify the rationality of the topology and component parameters.The experimental results show that the designed DAB DC transformer has better dynamic and static characteristics and can meet the requirements of demonstration engineering.
In the context of the flexible interconnection demonstration project of urban distribution network,the paper first summarizes the situation that the distribution network will present the deep integration of AC distribution network,DC distribution network and micro-grid,and DC distribution network as AC distribution.An important part between the grid and the microgrid will be greatly developed.The DC transformer has the functions of high voltage isolation of high and low voltage two DC systems,bidirectional control of power and DC bus voltage control of DC microgrid,which plays an important role in the DC distribution network.Therefore,the bidirectional DC transformer based on dual active power unit(DAB)is mainly discussed,and a DAB unit module topology and component parameters are designed.Finally,a DAB DC transformer simulation model based on MATLAB/Simulink is built.To verify the rationality of the topology and component parameters.The experimental results show that the designed DAB DC transformer has better dynamic and static characteristics and can meet the requirements of demonstration engineering.
引文
[1]马钊,周孝信,尚宇炜,等.未来配电系统形态及发展趋势[J].中国电机工程学报,2015,35(6):1289-1298.
[2]马钊,安婷,尚宇炜.国内外配电前沿技术动态及发展[J].中国电机工程学报,2016,36(6):1552-1567.
[3]黄夏楠,马世英,屈高强,等.适应我国可再生能源发展的西部电网模式构想和关键技术[J].电力建设,2018,39(2):85-94.
[4]王朝辉,王天威,张军明.模块化多电平直流变压器研究[J].中国电机工程学报,2016,36(1):31-39.
[5]孙长江,张建文,蔡旭,等.隔离型MMC直流变压器的电流源运行[J].中国电机工程学报,2016,36(7):1977-1986.
[6]石巍,方太勋,谢晔源,等.CLLC型模块化输入串联输出并联直流变压器[J].南方电网技术,2017,11(4):7-13.
[7]吕正,颜湘武.直流纳电网中用于高频隔离的CLLC型双向直流变压器的模态分析与优化设计[J].中国电机工程学报,2016,36(21):5918-5929.
[8]孙谦浩,宋强,王裕,等.基于RT-LAB的高频链直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(5):80-87.
[9]贾祺,赵彪,严干贵,等.基于高频链直流变压器的柔性中压直流配电系统分析[J].电力系统保护与控制,2016,44(16):90-98.
[10]李建国,赵彪,宋强,等.直流配电网中高频链直流变压器的电压平衡控制策略研究[J].中国电机工程学报,2016,36(2):327-334.
[11]AKAGI H,KINOUCHI S I,MIYAZAKI Y.Bidirectional isolated dual-active-bridge(DAB)DC-DCconverters using 1.2-kV 400-A SiC-MOSFET dual modules[J].Cpss Transactions on Power Electronics&Applications,2017,1(1):33-40.
[12]DUNG N A,CHIU H J,LIN J Y,et al.Efficiency optimisation of ZVS isolated bidirectional DAB converters[J].IET Power Electronics,2018,11(8):1499-1506.
[13]HOU N,SONG W,WU M.Minimum-currentstress scheme of dual active bridge DC-DC converter with unified phase-shift control[J].IEEETransactions on Power Electronics,2016,31(12):8552-8561.
[14]LIU C,LIU H,CAI G,et al.Novel hybrid LLC resonant and DAB linear DC-DC converter:average model and experimental verification[J].IEEE Transactions on Industrial Electronics,2017,64(9):6970-6978.
[15]WANG Y,WANG F,LIN Y,et al.Sensorless parameter estimation and current-sharing strategy in two-phase and multiphase IPOP DAB DC-DC converters[J].IET Power Electronics,2018,11(6):1135-1142.
[16]石华楷,孙贤大,郭自勇,等.15kV/400V直流变压器的设计与研制[J].南方电网技术,2016,10(4):63-69.
[17]薛伟,郑丽君,高云广,等.电力电子变压器中高频变压器的设计方法[J].电测与仪表,2015,52(23):117-121.
[18]陈金星.大功率高压高频变压器的最大设计容量及合理设计频率计算[J].变压器,2017,54(12):15-19.
[19]尹平平,王韦华.基于FPGA的直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(10):140-145.
[20]孙谦浩,宋强,王裕,等.基于RT-LAB的高频链直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(5):80-87.
[21]赵亚雄.基于直流配电网的直流变压器拓扑及其控制方法的研究[D].南京:东南大学,2017.
[2]马钊,安婷,尚宇炜.国内外配电前沿技术动态及发展[J].中国电机工程学报,2016,36(6):1552-1567.
[3]黄夏楠,马世英,屈高强,等.适应我国可再生能源发展的西部电网模式构想和关键技术[J].电力建设,2018,39(2):85-94.
[4]王朝辉,王天威,张军明.模块化多电平直流变压器研究[J].中国电机工程学报,2016,36(1):31-39.
[5]孙长江,张建文,蔡旭,等.隔离型MMC直流变压器的电流源运行[J].中国电机工程学报,2016,36(7):1977-1986.
[6]石巍,方太勋,谢晔源,等.CLLC型模块化输入串联输出并联直流变压器[J].南方电网技术,2017,11(4):7-13.
[7]吕正,颜湘武.直流纳电网中用于高频隔离的CLLC型双向直流变压器的模态分析与优化设计[J].中国电机工程学报,2016,36(21):5918-5929.
[8]孙谦浩,宋强,王裕,等.基于RT-LAB的高频链直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(5):80-87.
[9]贾祺,赵彪,严干贵,等.基于高频链直流变压器的柔性中压直流配电系统分析[J].电力系统保护与控制,2016,44(16):90-98.
[10]李建国,赵彪,宋强,等.直流配电网中高频链直流变压器的电压平衡控制策略研究[J].中国电机工程学报,2016,36(2):327-334.
[11]AKAGI H,KINOUCHI S I,MIYAZAKI Y.Bidirectional isolated dual-active-bridge(DAB)DC-DCconverters using 1.2-kV 400-A SiC-MOSFET dual modules[J].Cpss Transactions on Power Electronics&Applications,2017,1(1):33-40.
[12]DUNG N A,CHIU H J,LIN J Y,et al.Efficiency optimisation of ZVS isolated bidirectional DAB converters[J].IET Power Electronics,2018,11(8):1499-1506.
[13]HOU N,SONG W,WU M.Minimum-currentstress scheme of dual active bridge DC-DC converter with unified phase-shift control[J].IEEETransactions on Power Electronics,2016,31(12):8552-8561.
[14]LIU C,LIU H,CAI G,et al.Novel hybrid LLC resonant and DAB linear DC-DC converter:average model and experimental verification[J].IEEE Transactions on Industrial Electronics,2017,64(9):6970-6978.
[15]WANG Y,WANG F,LIN Y,et al.Sensorless parameter estimation and current-sharing strategy in two-phase and multiphase IPOP DAB DC-DC converters[J].IET Power Electronics,2018,11(6):1135-1142.
[16]石华楷,孙贤大,郭自勇,等.15kV/400V直流变压器的设计与研制[J].南方电网技术,2016,10(4):63-69.
[17]薛伟,郑丽君,高云广,等.电力电子变压器中高频变压器的设计方法[J].电测与仪表,2015,52(23):117-121.
[18]陈金星.大功率高压高频变压器的最大设计容量及合理设计频率计算[J].变压器,2017,54(12):15-19.
[19]尹平平,王韦华.基于FPGA的直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(10):140-145.
[20]孙谦浩,宋强,王裕,等.基于RT-LAB的高频链直流变压器实时仿真研究[J].电力系统保护与控制,2017,45(5):80-87.
[21]赵亚雄.基于直流配电网的直流变压器拓扑及其控制方法的研究[D].南京:东南大学,2017.