虚拟磁链定向的三相电压型PWM整流器模型预测直接功率控制  

Virtual Flux Based Model Predictive Direct Power Control for Three-phase Voltage Sourced PWM Rectifier

作　　者：姬小豪 陈星弢 蒋伟毅 曹阳 张恒超 

机构地区：[1]国网江苏省电力有限公司检修分公司,苏州215000

出　　处：《电力系统及其自动化学报》2018年第1期121-126,共6页Proceedings of the CSU-EPSA

摘　　要：本文研究了一种用于三相电压型PWM整流器的新型直接功率控制策略——基于虚拟磁链定向的模型预测直接功率控制。该方法以虚拟磁链矢量作为基本控制矢量,利用功率预测模型和功率误差最小原则,得出目标控制矢量公式,结合空间矢量脉宽调制实现模型预测功率控制。该方法简单,在每个开关周期对选择矢量没有限制。同时,将本文提出的方法与基于虚拟磁链定向的开关表直接功率控制在不同工况下进行了仿真和实验对比。结果验证了本文方法的有效性和可行性,为三相电压型PWM整流器提供了一种可行的控制方案。In this paper, a novel direct power control strategy, i.e., virtual flux based model predictive direct power con- trol（VF-MPDPC）, is investigated for its use in a three-phase voltage sourced PWM rectifier. Based on the power predic- tion model and power error minimization principle, virtual flux vector is used as the base vector of confrol, thus the vec- tor formula for object control is obtained. The method of model predictive power control is realized with the combination of space vector pulse width modulation（SVPWM）. The proposed method is simple, and there is no restriction on the se- lection of vectors during each switching period. In the meantime, a comparative study consisting of numerical simulation and experimental test was performed, which compared the proposed method with virtual flux based look-up table direct power control （VF-LUTDPC）under different operation conditions. Finally, results show the feasibility and effectiveness of the proposed method, which provides a viable solution for three-phase voltage sourced PWM rectifier.

关 键 词：虚拟磁链 电压型PWM整流器 模型预测直接功率控制 空间矢量脉冲宽度调制 

分 类 号：TM46[电气工程—电器]