三电平逆变器有限开关序列模型预测控制策略
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摘要
针对三电平有源中性点箝位(ANPC)逆变器采用模型预测控制(MPC)策略时存在开关频率不固定和采样频率较高的缺点,提出了一种有限开关序列模型预测控制(FSS-MPC)策略。该策略将控制集确定为10组开关序列,构建了包含中性点电压偏差的目标函数,通过滚动优化确定最优开关序列,从而控制中性点电压平衡和减小开关器件损耗。最后通过仿真和实验验证了控制策略的有效性。
A finite switching sequence model predictive control(FSS-MPC) strategy is proposed to solve the unfixed switching frequency and high sampling frequency existing in the model predictive control(MPC) of active neutral point clamped(ANPC) inverter.In this strategy, 10 switch sequences are selected and the objective function which including the neutral point potential deviation is built.The optimal switching sequence is determined by rolling optimization.By this method, the neutral point potential can be balanced and the loss of switching devices can be effectively reduced.The simulation and experimental results are provided to verify the effectiveness of the proposed control strategy.
A finite switching sequence model predictive control(FSS-MPC) strategy is proposed to solve the unfixed switching frequency and high sampling frequency existing in the model predictive control(MPC) of active neutral point clamped(ANPC) inverter.In this strategy, 10 switch sequences are selected and the objective function which including the neutral point potential deviation is built.The optimal switching sequence is determined by rolling optimization.By this method, the neutral point potential can be balanced and the loss of switching devices can be effectively reduced.The simulation and experimental results are provided to verify the effectiveness of the proposed control strategy.
引文
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[3]胡存刚,芮涛,马大俊,等.三电平ANPC逆变器中点电压平衡和开关损耗减小的SVM控制策略[J].中国电机工程学报,2016,36(13):3598-3608.
[4]刘斌,黄凯伦,伍家驹,等.一种具有中点电位平衡可降低损耗的三电平空间矢量调制方法[J].电工技术学报,2015,30(4):196-202.
[5]杜少通,伍小杰,周娟,等.一种采用虚拟磁链模型预测的新型PWM算法[J].中国电机工程学报,2015,35(3):688-694.
[6]曹晓冬,谭国俊,李川,等.三电平PWM整流器模型预测直接功率控制研究[J].电力电子技术,2013,47(7):25-27.
[7]王从刚,何凤有,曹晓冬.三相电压型PWM整流器有限开关序列模型预测电流控制[J].电工技术学报,2013,28(12):182-190.
[2] Hu C,Yu X,Holmes D G,et al.An Improved Virtual Space Vector Modulation Scheme for Three-level Active Neutral-point-clamped Inverter[J].IEEE Trans. on Power Electronics, 2017,32(10):7419-7434.
[3]胡存刚,芮涛,马大俊,等.三电平ANPC逆变器中点电压平衡和开关损耗减小的SVM控制策略[J].中国电机工程学报,2016,36(13):3598-3608.
[4]刘斌,黄凯伦,伍家驹,等.一种具有中点电位平衡可降低损耗的三电平空间矢量调制方法[J].电工技术学报,2015,30(4):196-202.
[5]杜少通,伍小杰,周娟,等.一种采用虚拟磁链模型预测的新型PWM算法[J].中国电机工程学报,2015,35(3):688-694.
[6]曹晓冬,谭国俊,李川,等.三电平PWM整流器模型预测直接功率控制研究[J].电力电子技术,2013,47(7):25-27.
[7]王从刚,何凤有,曹晓冬.三相电压型PWM整流器有限开关序列模型预测电流控制[J].电工技术学报,2013,28(12):182-190.