一种采用虚拟磁链模型预测的新型PWM算法

发布时间：2018-01-23 05:15

本文关键词： 脉宽调制模型预测虚拟磁链单目标优化多目标优化　出处：《中国电机工程学报》2015年03期 　论文类型：期刊论文

【摘要】：针对变流器脉宽调制(pulse-width modulation,PWM),基于虚拟磁链的模型预测,提出一种新型脉宽调制算法(novel algorithm of pulse-width modulation,NPWM)。建立由正弦调制电压和变流器输出电压构成的虚拟磁链模型,以磁链误差最小为优化目标建立价值函数,采用模型预测获取最优目标电压矢量。基于单一目标预测方法,提出一种多目标预测方案,确保在磁链误差范围一定的前提下降低器件平均开关频率,依据建立的价值函数分析算法流程。仿真和实验比较两种预测算法下NPWM调制和空间矢量脉宽调制的控制效果,验证两种预测方法下NPWM算法的有效性。
[Abstract]:For PWM pulse-width modulationof converter, the model prediction is based on virtual flux chain. A novel algorithm of pulse-width modulation is proposed. A virtual flux model consisting of sinusoidal modulation voltage and output voltage of converter is established, and the value function is established with the minimum flux error as the optimization objective. The optimal target voltage vector is obtained by model prediction. Based on the single target prediction method, a multi-objective prediction scheme is proposed to ensure the reduction of the average switching frequency of the device under the premise of a fixed flux error range. According to the established value function analysis algorithm flow, simulation and experimental comparison of the two predictive algorithms under the NPWM modulation and space vector pulse width modulation control effect. The validity of NPWM algorithm under two prediction methods is verified.
【作者单位】：中国矿业大学信息与电气工程学院;
【基金】：国家自然科学基金项目(51377160)~~
【分类号】：TM46
【正文快照】： 0引言脉宽调制(pulse-width modulation,PWM)技术是用于电力电子变换器交流输出的控制策略,几乎处于任何一种现代电力电子变换器的核心位置,一直吸引着研究者的兴趣[1]。空间矢量脉宽调制(spacevector pulse width modulation,SVPWM)和正弦脉宽调制(sinusoidal pulse width mo

【参考文献】