优化的三电平逆变器无权重因子模型预测控制

An Optimization Model Predictive Control Method for Three Level Inverters Without Weighting Factor

为了简化三电平逆变器的模型预测控制方法,消除权重因子并实现多目标优化控制,提出了一种优化的三电平逆变器无权重因子模型预测控制方法。分别对交流电流和直流侧中点电压进行控制,从而选择最优矢量,并避免使用权重因子。从3个方面详细给出了电压矢量优化选择的方法,以简化三电平逆变器的模型预测控制,并提高其安全可靠性。通过仿真和实验对所提方案进行了验证,结果表明,该方法可以实现三电平逆变器的无权重因子多目标优化控制。

In order to simplify the model predictive control method of three level inverters, the weighting factor and re- alize multi-objective optimization control was eliminated, while proposes an optimization model predictive control method was proposed for three level inverters unweighted factor. The optimal voltage vector was selected by controlling the ac cur- rent and de midpoint voltage respectively, which results in weighting factor elimination. A voltage vector optimization selec- tion method was put forward from three aspects in detail, aiming at simplifying the model predictive control method of three level inverters, and improving the safety and reliability. The proposed scheme was verified by simulation and experimental researches. The results show that the proposed method can realize multi-objective optimization control of the three level in- verters without weighting factor.