基于模型预测的三电平PWM变流器直接功率控制
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摘要
为了满足脉宽调制型变流器功率响应速度快以及绝缘栅双极型晶体管开关频率恒定等要求,提出了基于模型预测的直接功率控制策略用于三电平PWM变流器。该控制策略采用电压外环、功率内环的双闭环控制,外环省略了锁相环环节,简化了控制系统结构;内环无需PI调节器,参数设计简单,响应速度快。利用MATLAB/SIMULINK仿真平台搭建了三电平中性点箝位型PWM变流器模型,对比分析了提出的控制策略与传统PI控制的效果。仿真结果表明,新的控制策略有效降低了交流侧电流总谐波失真率,提高了交流侧功率因数,具有良好的动态和稳态性能。
To meet the requirements of fast power response speed for pulse width modulation(PWM) type converter and constant switching frequency for insulated gate bipolar transistor(IGBT), a direct power control strategy based on model prediction was proposed for three-level PWM converter. The double closed-loop control was adopted in this strategy, namely voltage outer-loop and power inner-loop. The phase-locked loop in the outer-loop is omitted, which simplifies the structure of the control system. A PI regulator is not need in the inner-loop, which makes parameters' design simple and the response speed fast. A model of three-level neutral point clamp type PWM converter was built in MATLAB/SIMULINK. The effects between the presented control strategy and traditional PI control were analyzed. The simulation results show that the new control strategy effectively reduces the total harmonic distortion rate of the AC-side current, improves the AC-side power factor, and has good dynamic and steady-state characteristics.
To meet the requirements of fast power response speed for pulse width modulation(PWM) type converter and constant switching frequency for insulated gate bipolar transistor(IGBT), a direct power control strategy based on model prediction was proposed for three-level PWM converter. The double closed-loop control was adopted in this strategy, namely voltage outer-loop and power inner-loop. The phase-locked loop in the outer-loop is omitted, which simplifies the structure of the control system. A PI regulator is not need in the inner-loop, which makes parameters' design simple and the response speed fast. A model of three-level neutral point clamp type PWM converter was built in MATLAB/SIMULINK. The effects between the presented control strategy and traditional PI control were analyzed. The simulation results show that the new control strategy effectively reduces the total harmonic distortion rate of the AC-side current, improves the AC-side power factor, and has good dynamic and steady-state characteristics.
引文
[1]张帆,刘悦敏,范波,等.基于虚拟磁链三相电压型脉宽调制整流器模型预测直接功率控制[J].电机与控制应用,2016,43(9):25-30.
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[12]张辉,李志新,王涛,等.基于三矢量的三相PWM整流器低复杂性模型预测直接功率控制[J].电网技术,2018,42(3):957-965.
[13]綦慧,刘雨杰.基于SVPWM的三电平逆变器中点电位控制方法研究[J].电气传动自动化,2016,38(6):1-4.
[14]李宁,王跃,王兆安,等.基于新型矢量选择表的电压型三电平中性点钳位整流器直接功率控制策略[J].电工技术学报,2016,31(8):76-89.
[15]马俊鹏,宋文胜,王顺亮,等.单相三电平脉冲整流器无差拍预测直接功率控制[J].中国电机工程学报,2015,35(4):935-943.
[16]黄守道,叶虹志,宋作森,等.基于虚拟磁链的直接功率控制在VSC-HVDC中的应用[J].电网技术,2014,38(4):852-857.
[17]谭国俊,曹晓冬,王从刚,等.基于满意优化的三电平PWM整流器瞬时开关频率抑制方法[J].中国电机工程学报,2014,34(24):4057-4067.
[18]詹景君,张颖超,钱希森,等.基于优化DPC策略的三电平PWM整流器[J].电源学报,2013(2):46-51.
[19]王彪.基于预测直接功率控制的三相电压型PWM整流器研究[D].天津:天津理工大学,2014.
[20]张中泉,刘晓光,钟天宇.风电机组有功功率集散优化控制系统研究[J].发电技术,2018,39(6):574-579.
[21]樊新东,杨秀媛,金鑫城.风电场有功功率控制综述[J].发电技术,2018,39(3):268-276.
[22]Tao YuKun,Wu Qinghua,Wang Lei,et al.Voltage sensorless predictive direct power control of three-phase PWM converters[J].lET Power Electronics,2016,9(5):1009-1018.
[23]叶虹志.永磁直驱风电系统并网变流器的预测直接功率控制[D].长沙:湖南大学,2014.
[24]Song W,Ma J,Zhou L,et al.Deadbeat predictive power control of single-phase three-level neutral point clamped converters using space vector modulation for electric railway traction[J].IEEE Transactions on Power Electronics,2016,31(1):721-732.
[2]梁营玉.不对称电网电压下VSC-HVDC模型预测直接功率控制[J].电网技术,2017,41(8):2455-2461.
[3]张国栋,刘凯.能源互联网背景下的微电网能量管理分析[J].发电技术,2019,40(1):17-21.
[4]陈良.一种简化的三相电流型PWM整流器控制方法[J].广东电力,2018,31(12):41-48.
[5]杨林,曾江,杨清波.三电平逆变器简化SVPWM策略及其误差电流分析[J].广东电力,2017,30(12):48-54.
[6]张帆.PWM整流器预测直接功率控制策略研究[D].洛阳:河南科技大学,2017.
[7]马俊鹏,宋文胜,冯晓云.基于瞬时功率观测器的单相三电平脉冲整流器直接功率控制[J].电工技术学报,2018,33(4):837-844.
[8]Uddin M,Mekhilef S,Rivera M,et al.Imposed weighting factor optimization method for torque ripple reduction of in fed by indirect matrix converter with predictive control algorithm[J].IEEE Electronic Engineering Technology.2015,10(1):227-242.
[9]Vazquez S,Marquez A,Agui L,Era R,et al.Predictive optimal switching sequence direct power control for grid connected power converters[J].IEEE Transaction on Industry Electronics,2015,62(4):2010-2020.
[10]Song W,DENG Z,WANG S,et al.A simple model predictive power control strategy for single-phase PWM converters with modulation function optimization[J].IEEE Transaction on Power Electronics,2016,31(7):5279-5289.
[11]Zhang Y,Y Peng,Yang H.Performance improvement of two-vectors-based model predictive control of PWMrectifier[J].IEEE Transactions on Power Electronics,2016,31(8):6016-6030.
[12]张辉,李志新,王涛,等.基于三矢量的三相PWM整流器低复杂性模型预测直接功率控制[J].电网技术,2018,42(3):957-965.
[13]綦慧,刘雨杰.基于SVPWM的三电平逆变器中点电位控制方法研究[J].电气传动自动化,2016,38(6):1-4.
[14]李宁,王跃,王兆安,等.基于新型矢量选择表的电压型三电平中性点钳位整流器直接功率控制策略[J].电工技术学报,2016,31(8):76-89.
[15]马俊鹏,宋文胜,王顺亮,等.单相三电平脉冲整流器无差拍预测直接功率控制[J].中国电机工程学报,2015,35(4):935-943.
[16]黄守道,叶虹志,宋作森,等.基于虚拟磁链的直接功率控制在VSC-HVDC中的应用[J].电网技术,2014,38(4):852-857.
[17]谭国俊,曹晓冬,王从刚,等.基于满意优化的三电平PWM整流器瞬时开关频率抑制方法[J].中国电机工程学报,2014,34(24):4057-4067.
[18]詹景君,张颖超,钱希森,等.基于优化DPC策略的三电平PWM整流器[J].电源学报,2013(2):46-51.
[19]王彪.基于预测直接功率控制的三相电压型PWM整流器研究[D].天津:天津理工大学,2014.
[20]张中泉,刘晓光,钟天宇.风电机组有功功率集散优化控制系统研究[J].发电技术,2018,39(6):574-579.
[21]樊新东,杨秀媛,金鑫城.风电场有功功率控制综述[J].发电技术,2018,39(3):268-276.
[22]Tao YuKun,Wu Qinghua,Wang Lei,et al.Voltage sensorless predictive direct power control of three-phase PWM converters[J].lET Power Electronics,2016,9(5):1009-1018.
[23]叶虹志.永磁直驱风电系统并网变流器的预测直接功率控制[D].长沙:湖南大学,2014.
[24]Song W,Ma J,Zhou L,et al.Deadbeat predictive power control of single-phase three-level neutral point clamped converters using space vector modulation for electric railway traction[J].IEEE Transactions on Power Electronics,2016,31(1):721-732.