基于比例正弦幅值积分器的地铁二重化能馈变流器控制
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摘要
将正弦幅值积分器(SAI)应用于地铁二重化能馈变流器,在静止坐标系下简化了变流器的控制,同时提高了变流器的控制性能。从SAI的数字实现出发,在离散域对其进行频率响应分析,得到离散化SAI实际特性与连续域理想模型的差异,针对两者存在的差异提出了线性预测相位补偿方法。为了提高电流环的动态性能,提出在电流控制环引入虚拟解耦项,削弱电流控制对SAI的依赖,以此提高电流环的响应速度。提出在电压外环采用电压平方反馈进行闭环控制方法,通过压差修正控制保证2组串联变流器均压,并通过直流输入电流比例前馈进一步提高电压环响应性能。仿真和实验验证了所提控制策略的正确性与有效性。
The SAI(Sinusoidal Amplitude Integrator) is applied to dual-series energy-fed converter for subway,which simplifies the control of converter and improves the control performance of converter in the stationary coordinate system. Starting from the digital realization of SAI,based on the frequency response analysis in discrete domain,the difference between the actual characteristics of discrete SAI and the ideal model of continous domain is analyzed,and the corresponding linear prediction phase compensation method is proposed. In order to improve the dynamic performance of the current loop,a virtual decoupling term is introduced in the current control loop to reduce the dependence of the current control on the SAI and improve the dynamic performance of the current loop. The closed-loop control of the voltage outer loop by voltage squared feedback is adopted to ensure the voltage balance of the two series converters through the pressure difference correction control and improve the response performance of the voltage loop through the proportional feed forward of the DC input current. Simulations and experiments verify the correctness and effectiveness of the proposed control strategy.
The SAI(Sinusoidal Amplitude Integrator) is applied to dual-series energy-fed converter for subway,which simplifies the control of converter and improves the control performance of converter in the stationary coordinate system. Starting from the digital realization of SAI,based on the frequency response analysis in discrete domain,the difference between the actual characteristics of discrete SAI and the ideal model of continous domain is analyzed,and the corresponding linear prediction phase compensation method is proposed. In order to improve the dynamic performance of the current loop,a virtual decoupling term is introduced in the current control loop to reduce the dependence of the current control on the SAI and improve the dynamic performance of the current loop. The closed-loop control of the voltage outer loop by voltage squared feedback is adopted to ensure the voltage balance of the two series converters through the pressure difference correction control and improve the response performance of the voltage loop through the proportional feed forward of the DC input current. Simulations and experiments verify the correctness and effectiveness of the proposed control strategy.
引文
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[14]杜雄,王国宁,孙鹏菊,等.采用正弦幅值积分器的电网基波电压同步信号检测[J].中国电机工程学报,2013,33(36):104-111.DU Xiong,WANG Guoning,SUN Pengju,et al.Synchronization signal detection for grid fundamental voltage through employing sinusoidal amplitude integrators[J].Proceedings of the CSEE,2013,33(36):104-111.
[15]郭小强.光伏并网逆变器通用比例复数积分控制策略[J].中国电机工程学报,2015,35(13):3393-3399.GUO Xiaoqiang.Generalized proportional complex integral control scheme for PV grid-connected inverters[J].Proceedings of the CSEE,2015,35(13):3393-3399.
[16]王晗,张建文,蔡旭.一种PWM整流器动态性能改进控制策略[J].中国电机工程学报,2012,32(增刊1):194-202.WANG Han,ZHANG Jianwen,CAI Xu.An improved control method of the dynamic ability for PWM rectifier[J].Proceedings of the CSEE,2012,32(Supplement 1):194-202.
[2]邓文豪,肖彦君,吴茂杉.基于列车制动的超级电容型储能系统的参数设计与控制[J].铁道机车车辆,2010,30(4):58-62.DENG Wenhao,XIAO Yanjun,WU Maoshan.Design and contro of super-capacitor energy storage system based on train braking[J].Railway Locomotives and Car,2010,30(4):58-62.
[3]蒋启龙,连级三.飞轮储能在地铁系统中的应用[J].变流技术与电力牵引,2017(4):13-17.JIANG Qilong,LIAN Jisan.Application study on flying whee energy storage in subway system[J].Converter Technology&Electric Traction,2017(4):13-17.
[4]全恒立,张钢,阮白水,等.城市轨道交通混合型能馈式牵引供电装置[J].北京交通大学学报,2013,35(2):92-98.QUAN Hengli,ZHANG Gang,RUAN Baishui,et al.Urban rai transit hybrid traction power stystem with energy feedback[J]Journal of Beijing Jiaotong University,2013,35(2):92-98.
[5]丁树奎,韩志伟,张钢,等.能馈式牵引供电原理及其在城市轨道交通中的应用[M].北京:北京交通大学出版社,2014:66-73.
[6]丁祖军,刘保连,倪伟.PWM整流器中优化变结构控制策略的设计[J].电力自动化设备,2012,32(1):76-79.DING Zujun,LIU Baolian,NI Wei.Design of improved variable structure control for PWM rectifier[J].Electric Power Automation Equipment,2012,32(1):76-79.
[7]王恩德,黄声华.三相电压型PWM整流的新型双闭环控制策略[J].中国电机工程学报,2012,32(15):24-30.WANG Ende,HUANG Shenghua.A novel double closed loop control of the three-phase voltage-sourced PWM rectifier[J]Proceedings of the CSEE,2012,32(15):24-30.
[8]徐榕,于泳,杨荣峰,等.H桥级联STATCOM直流侧电容电压平衡控制方法[J].电力自动化设备,2015,35(5):15-22.XU Rong,YU Yong,YANG Rongfeng,et al.DC capacitor voltage balance control of H-bridge cascaded STATCOM[J].Electric Power Automation Equipment,2015,35(5):15-22.
[9]张学广,马彦,李瑞,等.两相静止坐标系下并网逆变器的重复控制策略[J].电工技术学报,2016,31(9):85-91.ZHANG Xueguang,MA Yan,LI Rui,et al.Repetitive control strategy for grid-connected converters in stationary frame[J].Transactions of China Electrotechnical Society,2016,31(9):85-91.
[10]黄海宏,王钰,许若冰,等.双环重复控制三相四线制有源电力滤波器[J].电力自动化设备,2016,36(4):40-45.HUANG Haihong,WANG Yu,XU Ruobing,et al.Three-phase four-wire active power filter with dual-loop repetitive control[J].Electric Power Automation Equipment,2016,36(4):40-45.
[11]王跃,杨昆,陈国柱.级联DSTATCOM补偿不平衡负载分相控制策略[J].电力自动化设备,2015,35(5):23-28.WANG Yue,YANG Kun,CHEN Guozhu.Individual phase control of cascaded DSTATCOM for unbalanced load compensation[J].Electric Power Automation Equipment,2015,35(5):23-28.
[12]张学广,李瑞,徐殿国.并联型三相PWM变换器环流无差拍控制策略[J].中国电机工程学报,2013,33(6):31-37.ZHANG Xueguang,LI Rui,XU Dianguo.A dead-beat control strategy for circuiting-current in parallel connection systems of three-phase PWM converters[J].Proceedings of the CSEE,2013,33(6):31-37.
[13]赵新,金新民,唐芬,等.基于改进型比例谐振调节器的并网逆变器控制[J].电工技术学报,2014,29(1):265-272.ZHAO Xin,JIN Xinmin,TANG Fen,et al.The control method of grid-connected inverter based on novel proportion resonant controller[J].Transactions of China Electrotechnical Society,2014,29(1):265-272.
[14]杜雄,王国宁,孙鹏菊,等.采用正弦幅值积分器的电网基波电压同步信号检测[J].中国电机工程学报,2013,33(36):104-111.DU Xiong,WANG Guoning,SUN Pengju,et al.Synchronization signal detection for grid fundamental voltage through employing sinusoidal amplitude integrators[J].Proceedings of the CSEE,2013,33(36):104-111.
[15]郭小强.光伏并网逆变器通用比例复数积分控制策略[J].中国电机工程学报,2015,35(13):3393-3399.GUO Xiaoqiang.Generalized proportional complex integral control scheme for PV grid-connected inverters[J].Proceedings of the CSEE,2015,35(13):3393-3399.
[16]王晗,张建文,蔡旭.一种PWM整流器动态性能改进控制策略[J].中国电机工程学报,2012,32(增刊1):194-202.WANG Han,ZHANG Jianwen,CAI Xu.An improved control method of the dynamic ability for PWM rectifier[J].Proceedings of the CSEE,2012,32(Supplement 1):194-202.