级联多电平逆变器有限控制集模型预测控制
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摘要
针对传统级联多电平逆变器的有限控制集模型预测控制(FCS-MPC)计算量随电平数增加而指数增长的缺点,本文提出了改进的级联多电平逆变器FCS-MPC控制算法。首先,分析级联多电平逆变器的数学模型,探讨了FCS-MPC控制策略在级联多电平上的应用原理,在传统FCS-MPC控制的基础上,对电流进行延时补偿、反馈补偿及参考电流校正,提高了系统的跟踪特性和减少了电流谐波畸变率;其次,将复杂分区内电压矢量的追踪计算简化至在单一分区内进行,优化开关冗余状态,减少计算量。最后搭建了MATLAB仿真实验,与传统FCS-MPC算法对比分析,证明了此方法的正确性和优越性。
An improved finite control set model predictive control(FCS-MPC)is proposed to overcome the shortcoming that calculation grow exponentially with the increase of the level series in traditional FCS-MPC with multilevel cascaded inverters. Firstly,the mathematical model of multilevel inverter is analyzed,and the application principle of FCS-MPC control strategy is discussed,applying current delay compensation,feedback compensation and reference current correction improves the tracking feature and reduces the current harmonic distortion. Secondly,the voltage vector selection is simplified when the complex partition voltage vector tracking calculations is simplified to be done in a single partition. Simulation results of comparison traditional FCS-MPC are provided to verify the effectiveness of the proposed FCS-MPC strategy.
An improved finite control set model predictive control(FCS-MPC)is proposed to overcome the shortcoming that calculation grow exponentially with the increase of the level series in traditional FCS-MPC with multilevel cascaded inverters. Firstly,the mathematical model of multilevel inverter is analyzed,and the application principle of FCS-MPC control strategy is discussed,applying current delay compensation,feedback compensation and reference current correction improves the tracking feature and reduces the current harmonic distortion. Secondly,the voltage vector selection is simplified when the complex partition voltage vector tracking calculations is simplified to be done in a single partition. Simulation results of comparison traditional FCS-MPC are provided to verify the effectiveness of the proposed FCS-MPC strategy.
引文
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[13]曹晓冬,谭国俊,王从刚,等.三电平PWM整流器多模型预测控制方法[J].电工技术学报,2014,29(8):142—150.
[14]KWAK S,PARK J C.Predictive Control Method With Future Zero-Sequence Voltage to Reduce Switching Losses in ThreePhase Voltage Source Inverters[J].in IEEE Transactions on Power Electronics,2015,30(3):1558—1566.
[15]VAZQUEZ S.Model Predictive Control:A Review of Its Applications[J],in Power Electronics,in IEEE Industrial Electronics Magazine,2014,8(1):16—31.
[16]沈坤,章兢,王坚.一种多步预测的变流器有限控制集模型预测控制算法[J].中国电机工程学报,2012,32(33):37—44.
[17]KWAK S,PARK J.C.Switching Strategy Based on Model Predictive Control of VSI to Obtain High Efficiency and Balanced Loss Distribution[J],in IEEE Transactions on Power Electronics,2014,29(9):4551—4567.
[18]陆治国,王友,廖一茜.基于光伏并网逆变器的一种矢量角补偿法有限控制集模型预测控制研究[J].电网技术,2017,1—6.
[2]ACUNA P,MORAN L,RIVERA M,et al.A Single-Objective Predictive Control Method for a Multivariable Single-Phase Three-Level NPC Converter-Based Active Power Filter[J],in IEEE Transactions on Industrial Electronics,2015,62(7):4598—4607.
[3]周飞,何维国,包海龙,等.适合城市电网的级联型统一潮流控制器[J].电网技术,2012,36(03):174—178.
[4]Yu Y,KONSTANTINOU G,HREDZAK B,et al.Power Balance of Cascaded H-Bridge Multilevel Converters for Large-Scale Photovoltaic Integration[J].in IEEE Transactions on Power Electronics,2016,31(1):292—303.
[5]顾春阳,郑泽东,李永东.用于机车牵引的新型级联H桥整流器电压平衡方法[J].电工技术学报,2013,28(12):168—172.
[6]CHAVARRIA J,BIEL D,GUINJOAN F,et al.Energy-Balance Control of PV Cascaded Multilevel Grid-Connected Inverters Under Level-Shifted and Phase-Shifted PWMs[J],in IEEE Transactions on Industrial Electronics,2013,60(1):98—111.
[7]刘云峰,何英杰,尹仕奇,等.基于空间矢量调制的星形级联H桥SVG直流侧电压控制方法研究[J].电工技术学报,2015,30(5):23—32.
[8]KAKOSIMOS P,BAYHAN S,ABU-RUB H.Single-phase cascaded H-bridge neutral-point clamped inverter:A comparison between MPC and PI control,IECON 2016-42nd Annual Conference of the IEEE Industrial Electronics Society,Florence,2016:5983—5989.
[9]BOCKER J,FREUDENBERG B,DIECKERHOFF S.Experimentl Comparison of Model Predictive Control and Cascaded Control of the Modular Multilevel Converter[J],in IEEE Transactions on Power Electronics,Jan.2015,30(1):422—430.
[10]RIVERA M.A Comparative Assessment of Model Predictive Current Control and Space Vector Modulation in a Direct Matrix Converter[J],in IEEE Transactions on Industrial Electronics,2013,60(2):578—588.
[11]AGHDAM M M,LI L,ZHU J,et al.Finite control set model predictive control-a powerful control algorithm for gridconnected power converters[C],2016 IEEE 11th Conference on Industrial Electronics and Applications(ICIEA),2016:2350—2355.
[12]张永昌,杨海涛.异步电机无速度传感器模型预测控制[J].中国电机工程学报,2014,34(15):2422—2429.
[13]曹晓冬,谭国俊,王从刚,等.三电平PWM整流器多模型预测控制方法[J].电工技术学报,2014,29(8):142—150.
[14]KWAK S,PARK J C.Predictive Control Method With Future Zero-Sequence Voltage to Reduce Switching Losses in ThreePhase Voltage Source Inverters[J].in IEEE Transactions on Power Electronics,2015,30(3):1558—1566.
[15]VAZQUEZ S.Model Predictive Control:A Review of Its Applications[J],in Power Electronics,in IEEE Industrial Electronics Magazine,2014,8(1):16—31.
[16]沈坤,章兢,王坚.一种多步预测的变流器有限控制集模型预测控制算法[J].中国电机工程学报,2012,32(33):37—44.
[17]KWAK S,PARK J.C.Switching Strategy Based on Model Predictive Control of VSI to Obtain High Efficiency and Balanced Loss Distribution[J],in IEEE Transactions on Power Electronics,2014,29(9):4551—4567.
[18]陆治国,王友,廖一茜.基于光伏并网逆变器的一种矢量角补偿法有限控制集模型预测控制研究[J].电网技术,2017,1—6.