基于受控耗散Hamiltonian系统模型的光伏准Z源T型三电平并网逆变器控制策略
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摘要
基于端口受控耗散哈密顿系统(PCHD)模型的无源控制策略无需对受控对象进行线性化处理,它从能量成型与注入阻尼方面讨论受控对象的稳定性,简化了控制系统的结构。首先,利用状态空间法推导出准Z源T型三电平逆变器数学模型;其次,结合无源PCHD模型的控制规律选取能量函数与注入阻尼,并进行控制系统的设计。该控制策略不但使系统具有优良的动、静特性,且逆变器输出电流谐波低、经济性高;最后,仿真和硬件实验验证了基于PCHD模型的无源控制策略的正确性和有效性。
The passivity-based control strategy based on the port controlled Hamiltonian with dissipation(PCHD) model does not need to linearize the controlled objects.It discusses the stability of the controlled objects from energy and injection damping,which simplifies the structure of the control system.Firstly,the mathematical model of the quasi-Z-source T-type three-level inverter is derived by using the state-space method.Secondly,the energy function and injection damping are selected through the control law of PCHD model,and the control system is designed.Meanwhile,this control strategy not only makes the system have excellent dynamic and static characteristics,but also has low harmonic output current and high economy.Finally,simulation and experiments verify the correctness and effectiveness of the passive control strategy based on PCHD model.
The passivity-based control strategy based on the port controlled Hamiltonian with dissipation(PCHD) model does not need to linearize the controlled objects.It discusses the stability of the controlled objects from energy and injection damping,which simplifies the structure of the control system.Firstly,the mathematical model of the quasi-Z-source T-type three-level inverter is derived by using the state-space method.Secondly,the energy function and injection damping are selected through the control law of PCHD model,and the control system is designed.Meanwhile,this control strategy not only makes the system have excellent dynamic and static characteristics,but also has low harmonic output current and high economy.Finally,simulation and experiments verify the correctness and effectiveness of the passive control strategy based on PCHD model.
引文
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[15]杨勇,赵春江.分布式发电系统中并网逆变器比例谐振控制[J].电力自动化设备,2011,31(11):51-55.Yang Yong,Zhao Chunjiang.Proportional resonance controller of grid-connected inverter for distributed generation system[J].Electric Power Automation Equipment,2011,31(11):51-55.
[16]李涛,程启明,程尹曼,等.基于E-L模型的Z源T型逆变器无源控制策略研究[J].电网技术,2018,42(7):304-312.Li Tao,Cheng Qiming,Cheng Yinman,et al.Research on passivity-based control strategy of Z-source T-type inverter based on E-L model[J].Power System Technology,2018,42(7):304-312.
[17]Li Tao,Cheng Qiming,Sun Weisha,et al.Gridconnected control strategy of five-level inverter based on passive E-L model[J].Energies,2017,10(10):1-14.
[18]程启明,张强,程尹曼,等.基于PCHD模型的光伏Z源并网逆变器无源控制[J].高电压技术,201642(9):2723-2732.Cheng Qiming,Zhang Qiang,Cheng Yinman,et al.Passivity based control of PV Z-source gridconnected inverter based on PCHD model[J].High Voltage Technology,2016,42(9):2723-2732.
[19]张百乐,王久和,赵凤娇.TNPC型光伏并网逆变器的PCHD建模与控制[J].中国电机工程学报,2014,34(增刊):204-210.Zhang Baile,Wang Jiuhe,Zhao Fengjiao.The PCHDmodel and control of TNPC PV grid-connected inverter[J].Proceedings of the CSEE,2014,34(S):204-210.
[2]刘勇超,葛兴来,冯晓云.两电平与三电平NPC逆变器单桥臂故障重构拓扑SVPWM算法比较研究[J].中国电机工程学报,2016,36(3):775-783.Liu Yongchao,Ge Xinglai,Feng Xiaoyun.Comparison study of SVPWM algorithms of the post-fault reconfigured topologies for two-level and three-level NPC inverters with failure of a leg[J].Proceeding of the CSEE,2016,36(3):775-783.
[3]周玉斐,黄文新,赵健伍,等.抽头电感准Z源逆变器[J].中国电机工程学报,2012,32(27):126-133.Zhou Yufei,Huang Wenxin,Zhao Jianwu,et al.Tapped inductor Quasi-Z-source inverters[J].Proceedings of the CSEE,2012,32(27):126-133.
[4]周玉斐,黄文新,赵健伍,等.一种高升压比的Z源逆变器[J].电工技术学报,2013,28(9):239-246.Zhou Yufei,Huang Wenxin,Zhao Jianwu,et al.Ahigh gain Z-source inverter[J].Transactions of China Electrotechnical Society,2013,28(9):239-246.
[5]刘孝辉,郑建勇,尤鋆,等.开关电感型Quasi-Z源逆变器[J].电力自动化设备,2011,31(9):65-68.Liu Xiaohui,Zheng Jianyong,You Jun,et al Switching inductive Quasi-Z-source inverter[J]Electric Power Automation Equipment,2011,31(9):65-68.
[6]戴鹏,石祥龙,朱晓莹,等.有源钳位三电平变频器改进SVPWM策略[J].电工技术学报,2017,32(14):137-145.Dai Peng,Shi Xianglong,Zhu Xiaoying,et al Improved SVPWM strategies for active neutral point clamped converters[J].Transactions of China Electrotechnical Society,2017,32(14):137-145.
[7]李洪亮,姜建国,乔树通.三电平SVPWM与SPWM本质联系及对输出电压谐波的分析[J].电力系统自动化,2015,39(12):130-137.Li Hongliang,Jiang Jianguo,Qiao Shutong.Essential relation between three-level SVPWM and SPWM and analysis on output voltage harmonic[J].Power System Automation,2015,39(12):130-137.
[8]陈磊,季亮,杨兴武,等.LCL型并网逆变器新型频率自适应重复控制方法[J].电力系统保护与控制,2017,45(23):57-64.Cheng Lei,Ji Liang,Yang Xingwu,et al.A new frequency adaptive repetitive control approach for grid-connected inverter with LCL filter[J].Power System Protection and Control,2017,45(23):57-64.
[9]于雁南,杨荣峰,徐殿国,等.级联H桥SVG的无差拍控制[J].高电压技术,2017,43(1):50-58.Yu Yannan,Yang Rongfeng,Xu Dianguo,et al.Deadbeat control of cascaded H-bridge static var generator[J].High Voltage Engineering,2017,43(1):50-58.
[10]曾正,赵荣祥,杨欢.带隔离变压器的并网逆变器的降阶模型及滑模变结构控制[J].电力系统自动化,2012,36(3):47-53.Zeng Zheng,Zhao Rongxiang,Yang Huan.Reduction model and sliding mode variable structure control for grid-connected inverters with isolation transformer[J]Power System Automation,2012,36(3):47-53.
[11]杨峰峰,杨旭红.基于LCL滤波有源阻尼控制的Z源逆变器并网研究[J].电力系统保护与控制,2018,46(5):38-45.Yang Fengfeng,Yang Xuhong.Research on Z-source inverter grid-connected system based on LCL filter of active damping control[J].Power System Protection and Control,2018,46(5):38-45.
[12]杨勇,阮毅,叶斌英,等.三相并网逆变器无差拍电流预测控制方法[J].中国电机工程学报,2009,29(33):40-46.Yang Yong,Ruan Yi,Ye Binying,et al.Deadbeat predictive current control method for three-phase grid-connected inverters[J].Proceedings of the CSEE2009,29(33):40-46.
[13]年珩,於妮飒,曾嵘.不平衡电压下并网逆变器的预测电流控制技术[J].电网技术,2013,37(5):1223-1229.Nian Hao,Yu Nisa,Zeng Rong.Predictive current control for grid-connected inverters under unbalanced grid voltage[J].Power System Technology,2013,37(5):1223-1229.
[14]马琳,金新民,唐芬,等.三相并网逆变器比例谐振控制及其网压前馈问题分析[J].电工技术学报,2012,27(8):56-63.Ma Lin,Jin Xinmin,Tang Fen,et al.Analysis of three-phase grid-connected inverter proportional resonant control and grid voltage feed-forward[J].Transactions of China Electrotechnical Society,2012,27(8):56-63.
[15]杨勇,赵春江.分布式发电系统中并网逆变器比例谐振控制[J].电力自动化设备,2011,31(11):51-55.Yang Yong,Zhao Chunjiang.Proportional resonance controller of grid-connected inverter for distributed generation system[J].Electric Power Automation Equipment,2011,31(11):51-55.
[16]李涛,程启明,程尹曼,等.基于E-L模型的Z源T型逆变器无源控制策略研究[J].电网技术,2018,42(7):304-312.Li Tao,Cheng Qiming,Cheng Yinman,et al.Research on passivity-based control strategy of Z-source T-type inverter based on E-L model[J].Power System Technology,2018,42(7):304-312.
[17]Li Tao,Cheng Qiming,Sun Weisha,et al.Gridconnected control strategy of five-level inverter based on passive E-L model[J].Energies,2017,10(10):1-14.
[18]程启明,张强,程尹曼,等.基于PCHD模型的光伏Z源并网逆变器无源控制[J].高电压技术,201642(9):2723-2732.Cheng Qiming,Zhang Qiang,Cheng Yinman,et al.Passivity based control of PV Z-source gridconnected inverter based on PCHD model[J].High Voltage Technology,2016,42(9):2723-2732.
[19]张百乐,王久和,赵凤娇.TNPC型光伏并网逆变器的PCHD建模与控制[J].中国电机工程学报,2014,34(增刊):204-210.Zhang Baile,Wang Jiuhe,Zhao Fengjiao.The PCHDmodel and control of TNPC PV grid-connected inverter[J].Proceedings of the CSEE,2014,34(S):204-210.
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