基于SOGI单相锁相环的列车辅助逆变器并联技术
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摘要
轨道列车辅助供电系统中的传统三相锁相环系统复杂,在母线电压不平衡及出现扰动的情况下存在锁相性能下降的情况。本文针对这一问题,提出一种改进的基于二阶广义积分器(SOGI)的单相锁相环设计方案,在提高系统简洁程度的同时,达到提高锁相的响应速度、降低稳态误差的目的。本文基于SOGI进行数学建模分析,提出一种基于SOGI的列车辅助逆变器并联控制方法,并在基于DSP TMS320F28335的50kV·A三相辅助逆变器的并联实验平台上进行实验验证。仿真和实验结果表明,该锁相方案能有效提高辅助逆变器并联的控制性能。
The traditional three-phase phase-locked loop system in the auxiliary power supply system of the railway train is complicated. Moreover,the phase-locked performance is degraded in the case of unbalanced bus voltage and disturbance. Aiming at this problem,this paper proposes an improved SOGI-based single-phase phase-locked loop design scheme,which can improve the response speed of phase-lock and reduce the steady-state error while improving the simplicity of the system. This paper proposes a SOGI-based parallel control method for train-assisted inverters based on SOGI mathematical modeling analysis. Experimental verification is carried out on a parallel experimental platform of 50 kV·A three-phase auxiliary inverter based on DSP TMS320F28335. Simulation and experimental results show that the phase-locked scheme can effectively improve the parallel control performance of the auxiliary inverter.
The traditional three-phase phase-locked loop system in the auxiliary power supply system of the railway train is complicated. Moreover,the phase-locked performance is degraded in the case of unbalanced bus voltage and disturbance. Aiming at this problem,this paper proposes an improved SOGI-based single-phase phase-locked loop design scheme,which can improve the response speed of phase-lock and reduce the steady-state error while improving the simplicity of the system. This paper proposes a SOGI-based parallel control method for train-assisted inverters based on SOGI mathematical modeling analysis. Experimental verification is carried out on a parallel experimental platform of 50 kV·A three-phase auxiliary inverter based on DSP TMS320F28335. Simulation and experimental results show that the phase-locked scheme can effectively improve the parallel control performance of the auxiliary inverter.
引文
[1]马颖涛(Ma Yingtao).城市轨道交通车辆辅助逆变电源的发展趋势(Develop trend of auxiliary power supply for urban rail transit train)[J].城市轨道交通研究(Urban Mass Transit),2017,20(7):103-106.
[2]龚锦霞,解大,张延迟(Gong Jinxia,Xie Da,Zhang Yanchi).三相数字锁相环的原理及性能(Principle and performance of the three-phase digital phase-locked loop)[J].电工技术学报(Transactions of China Electrotechnical Society),2009,24(10):94-99.
[3]吉正华,韦芬卿,杨海英(Ji Zhenghua,Wei Fenqing,Yang Haiying).基于dq变换的三相软件锁相环设计(Three-phase software phase-locked loop based on dq reference frame)[J].电力自动化设备(Electric Power Automation Equipment),2011,31(4):104-107.
[4]周国梁,石新春,付超(Zhou Guoliang,Shi Xinchun,Fu Chao).三相电压畸变条件下软件锁相环分析与实现(Operation of a software phase locked loop under distorted three-phase voltage)[J].电力电子技术(Power Electronics),2007,41(7):47-49.
[5]吴春华,许富强,周笛青,等(Wu Chunhua,Xu Fuqiang,Zhou Diqing,et al.).一种单相锁相环的数字实现(Digital implementation of single phase PLL)[J].电气传动(Electric Drive),2012,42(6):13-16.
[6]刘伟鹏(Liu Weipeng).单相光伏并网逆变器控制策略研究(Research on the control strategy of single-phase PV grid-connected inverter)[D].北京:北方工业大学(Beijing:North China University of Technology),2014.
[7]Ciobotaru M,Teodorescu R,Blaabjerg F.A new singlephase PLL structure based on second order generalized integrator[A].2006 37th IEEE Power Electronics Specialists Conference[C].Jeju,South Korea,2006.1-6.
[8]Kulkarni A,John V.A novel design method for SOGI-PLL for minimum settling time and low unit vector distortion[A].IECON 2013-39th Annual Conference of the IEEE Industrial Electronics Society[C].Vienna,Austria,2014.274-279.
[9]宋平岗,龚家康,周振邦(Song Pinggang,Gong Jiakang,Zhou Zhenbang).基于SOGI-FLL的MMC-RPC控制器设计(Design of MMC-RPC controller based on SOGI-FLL)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2018,37(5):12-20.
[10]江燕兴,潘逸蓖,窦伟(Jiang Yanxing,Pan Yikun,Dou Wei).一种用于光伏并网逆变器的高性能锁相环设计(Design of high-performance phase locked loop used in grid-connected inverter)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2016,35(7):75-80.
[11]Xiao F,Dong L,Li L,et al.A frequency-fixed SOGI-based PLL for single-phase grid-connected converters[J].IEEE Transactions on Power Electronics,2016,32(3):1713-1719.
[12]王晓寰,张敏霞,张纯江,等(Wang Xiaohuan,Zhang Minxia,Zhang Chunjiang,et al.).基于自适应下垂控制的多机逆变器双模式运行及平滑切换研究(Study on two-modes operation and seamless transfer of multi-inverter based on adaptive droop control strategy)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2018,37(3):17-25.
[2]龚锦霞,解大,张延迟(Gong Jinxia,Xie Da,Zhang Yanchi).三相数字锁相环的原理及性能(Principle and performance of the three-phase digital phase-locked loop)[J].电工技术学报(Transactions of China Electrotechnical Society),2009,24(10):94-99.
[3]吉正华,韦芬卿,杨海英(Ji Zhenghua,Wei Fenqing,Yang Haiying).基于dq变换的三相软件锁相环设计(Three-phase software phase-locked loop based on dq reference frame)[J].电力自动化设备(Electric Power Automation Equipment),2011,31(4):104-107.
[4]周国梁,石新春,付超(Zhou Guoliang,Shi Xinchun,Fu Chao).三相电压畸变条件下软件锁相环分析与实现(Operation of a software phase locked loop under distorted three-phase voltage)[J].电力电子技术(Power Electronics),2007,41(7):47-49.
[5]吴春华,许富强,周笛青,等(Wu Chunhua,Xu Fuqiang,Zhou Diqing,et al.).一种单相锁相环的数字实现(Digital implementation of single phase PLL)[J].电气传动(Electric Drive),2012,42(6):13-16.
[6]刘伟鹏(Liu Weipeng).单相光伏并网逆变器控制策略研究(Research on the control strategy of single-phase PV grid-connected inverter)[D].北京:北方工业大学(Beijing:North China University of Technology),2014.
[7]Ciobotaru M,Teodorescu R,Blaabjerg F.A new singlephase PLL structure based on second order generalized integrator[A].2006 37th IEEE Power Electronics Specialists Conference[C].Jeju,South Korea,2006.1-6.
[8]Kulkarni A,John V.A novel design method for SOGI-PLL for minimum settling time and low unit vector distortion[A].IECON 2013-39th Annual Conference of the IEEE Industrial Electronics Society[C].Vienna,Austria,2014.274-279.
[9]宋平岗,龚家康,周振邦(Song Pinggang,Gong Jiakang,Zhou Zhenbang).基于SOGI-FLL的MMC-RPC控制器设计(Design of MMC-RPC controller based on SOGI-FLL)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2018,37(5):12-20.
[10]江燕兴,潘逸蓖,窦伟(Jiang Yanxing,Pan Yikun,Dou Wei).一种用于光伏并网逆变器的高性能锁相环设计(Design of high-performance phase locked loop used in grid-connected inverter)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2016,35(7):75-80.
[11]Xiao F,Dong L,Li L,et al.A frequency-fixed SOGI-based PLL for single-phase grid-connected converters[J].IEEE Transactions on Power Electronics,2016,32(3):1713-1719.
[12]王晓寰,张敏霞,张纯江,等(Wang Xiaohuan,Zhang Minxia,Zhang Chunjiang,et al.).基于自适应下垂控制的多机逆变器双模式运行及平滑切换研究(Study on two-modes operation and seamless transfer of multi-inverter based on adaptive droop control strategy)[J].电工电能新技术(Advanced Technology of Electrical Engineering and Energy),2018,37(3):17-25.