PWM逆变器MPCC的矢量优化方法研究  

Research on Vector Optimization Method for MPCC of PWM Inverter

作　　者：杨兴武[1] 牛梦娇 陈磊[1] 赵文恺[2] YANG Xing-wu;NIU Meng-jiao;CHEN Lei;ZHAO Wen-kai(Shanghai University of Electric Power, Shanghai 200090, China)

机构地区：[1]上海电力学院,上海绿色能源并网工程技术研究中心,上海200090 [2]上海市电力公司浦东供电公司,上海200120

出　　处：《电力电子技术》2018年第6期65-67,共3页Power Electronics

基　　金：国家自然科学基金(51207086);上海市教育委员会科研创新项目(14YZ126)

摘　　要：三相电压型脉宽调制(PWM)逆变器由于电压矢量个数少,传统模型预测电流控制(MPCC)下的系统性能需依赖较高的采样频率。此处提出离散PWM方法,通过插入零矢量来调节矢量作用时间,减小指标函数控制误差,从而在不增加采样频率的情况下提高电流控制效果。为解决矢量作用时间短而引起的窄脉冲问题,提出一种简单实用的抑制方法。实验显示结果与传统MPCC相比,此处提出的新型MPCC方法动态性能良好,稳态性能得到显著提高。Due to the limited number of voltage vectors in three-phase voltage source pulse width modulation （PWM） inverter, system performance under traditional model predictive current control（MPCC） depends on a higher sampling frequency.Now a discrete PWM method is proposed,which regulates the vector working time by inserting zero vector to a control period and reduces the control error of the cost function.Thus the current control effect is improved with- out increasing the sampling frequency.A simple and practical method is proposed to suppress the narrow pulse gener- ated by the vector short working time.Experimental results show that,compared with the traditional MPCC ,the new MPCC method has a good dynamic performance, and the steady-state performance is significantly improved.

关 键 词：逆变器 模型预测电流控制 矢量优化 窄脉冲抑制 

分 类 号：TM464[电气工程—电器]