改进有限集模型预测控制策略在三相级联并网逆变器中的应用An Improved Finite Control Set-Model Predictive Control Strategy in Three-Phase Cascade Grid Inverter
贾冠龙;李冬辉;姚乐乐;
摘要(Abstract):
针对三相级联并网逆变器输出电流谐波少且可直接用于高电压大功率场合的特点,提出一种可用于此拓扑结构的改进型有限集模型预测控制(finite control set-model predictive control,FCS-MPC)策略。与传统的脉冲宽度调制(pulse width modulation,PWM)、载波相移正弦波脉宽调制(carrier phase shifted sinusoidal pulse width modulation,CPS-SPWM)相比,该方案省去了调制器且易实现并网控制;与传统的模型预测控制算法相比,该方案加入了电流反馈补偿环节、计算延时补偿环节、电压电流参考值修正环节,并通过优化被控对象减少运算量。仿真和实验结果表明,采用改进的有限集模型预测控制方案不仅是可行和有效的,而且具有方法简单、总谐波畸变率(total harmonics distortion,THD)小等优势。
关键词(KeyWords): 三相级联;并网逆变器;有限集模型预测控制
基金项目(Foundation):
作者(Author): 贾冠龙;李冬辉;姚乐乐;
Email:
DOI: 10.13335/j.1000-3673.pst.2016.0154
参考文献(References):
- [1]姚骏,杜红彪,周特,等.微网逆变器并联运行的改进下垂控制策略[J].电网技术,2015,39(4):932-938.Yao Jun,Du Hongbiao,Zhou Te,et al.Improved droop control strategy for inverters parallel operation in micro-grid[J].Power System Technology,2015,39(4):932-938(in Chinese).
- [2]Timbus A,Liserre M,Teodorescu R,et al.Evaluation of current controllers for distributed power generation systems[J].IEEE Transactions on Power Electronics,2009,24(3):654-664.
- [3]张颖,李崇坚,朱春毅,等.三电平H桥级联型逆变器[J].电工技术学报,2011,26(5):78-82.Zhang Ying,Li Chongjian,Zhu Chunyi,et al.Three-level H-bridge cascade type multi-level inverter[J].Transactions of China Electrotechnical Society,2011,26(5):78-82(in Chinese).
- [4]武海涛,刘永和.大功率电流型光伏并网换流器的拓扑与控制[J].电网技术,2013,37(8):2086-2093.Wu Haitao,Liu Yonghe.Topology and control of high-power current source converter for grid-connection of photovoltaic generation system[J].Power System Technology,2013,37(8):2086-2093(in Chinese).
- [5]曾正,赵荣祥,杨欢,等.多功能并网逆变器及其在微电网电能质量定制中的应用[J].电网技术,2012,36(5):58-67.Zeng Zheng,Zhao Rongxiang,Yang Huan,et al.A multi-functional grid-connected inverter and its application to customized power quality of microgrid[J].Power System Technology,2012,36(5):58-67(in Chinese).
- [6]陈堃,陈昌旺,刘涤尘.光伏并网逆变器输出电压直流分量的瞬时补偿策略[J].电网技术,2013,37(11):3080-3085.Chen Kun,Chen Changwang,Liu Dichen.Instantaneous compensation strategy of DC component in output voltage of photovoltaic grid-connected inverters[J].Power System Technology,2013,37(11):3080-3085(in Chinese).
- [7]陆治国,赵丽丽,吴春军,等.一种新型的三相桥级联型PWM变换器[J].电力系统保护与控制,2012,40(24):131-137.Lu Zhiguo,Zhao Lili,Wu Chunjun,et al.A novel three-phasebridge cascaded PWM converter[J].Power System Protection and Control,2012,40(24):131-137(in Chinese).
- [8]王立乔,齐飞.基于新型CPS-SPWM的三相级联型多电平变流器[J].电力电子技术,2011,45(6):26-28.Wang Liqiao,Qi Fei.Three phase cascade converter based on a novel CPS-SPWM[J].Power Electronics,2011,45(6):26-28(in Chinese).
- [9]李泽斌,罗安,田园,等.LCL型光伏并网逆变器电流内环控制方法[J].电网技术,2014,38(10):2772-2778.Li Zebin,Luo An,Tian Yuan,et al.Inner current loop control method for photovoltaic grid-connected inverter with LCL filter[J].Power System Technology,2014,38(10):2772-2778(in Chinese).
- [10]杨勇,赵方平,阮毅,等.三相并网逆变器模型电流预测控制技术[J].电工技术学报,2011,26(6):153-159.Yang Yong,Zhao Fangping,Ruan Yi,et al.Model current predictive control for three-phase grid-connected inverters[J].Transactions of China Electrotechnical Society,2011,26(6):153-159(in Chinese).
- [11]Kwak S,Park J C.Switching strategy based on model predictive control of VSI to obtain high efficiency and balanced loss distribution[J].IEEE Transactions on Power Electronics,2014,29(9):4551-4567.
- [12]Peng Fangzheng,Lai Jinsheng.Generalized instantaneous reactive power theory for three-phase power systems[J].IEEE Transactions on Instrumentation and Measurement,1996,45(1):293-297.
- [13]郑泽东,王奎,李永东,等.采用模型预测控制的交流电机电流控制器[J].电工技术学报,2013,28(11):118-123.Zheng Zedong,Wang Kui,Li Yongdong,et al.Current controller for AC motors using model predictive control[J].Transactions of China Electrotechnical Society,2013,28(11):118-123(in Chinese).
- [14]Xia Changliang,Liu Tao,Shi Tingna,et al.A simplified finite control set model predictive control for power converters[J].IEEE Transactions on Industrial Informatics.2013,28(99):1-12.
- [15]Yaramasu V,Rivera M,Narimani M,et al.Model predictive approach for a simple and effective load voltage control of four-leg inverter with an output filter[J].IEEE Transactions on Industrial Electronics,2014,61(10):5259-5270.
- [16]Kumar V,Gaur P,Mittal A P.Finite-state model predictive control of NPC inverter using multi-criteria fuzzy decision-making[J].International Transactions on Electrical Energy Systems,2015,25(5):876-897.
- [17]江渝,姜琦,黄敏,等.单相单级光伏LCL并网逆变系统控制策略[J].电网技术,2015,39(2):312-319.Jiang Yu,Jiang Qi,Huang Min,et al.Control strategy of single-phase single-stage LCL grid-connected photovoltaic inverter system[J].Power System Technology,2015,39(2):312-319(in Chinese).
- [18]Cortes P,Wilson A,Kouro S,et al.Model predictive control of multilevel cascaded H-bridge inverters[J].IEEE Transactions on Industrial Electronics,2010,57(8):2691-2699.
- [19]席裕庚,李德伟,林姝.模型预测控制:现状与挑战[J].自动化学报,2013,39(3):222-236.Xi Yugeng,Li Dewei,Lin Shu.Model predictive control:status and challenges[J].Acta Automatica Sinica,2013,39(3):222-236.