三电平电路空间矢量调制的一种新算法  

A Novel SVPWM Algorithm for Three-level Circuit

作　　者：钟宇明[1] 文励洪[1] 杨红[1] 刘家恒[2] 

机构地区：[1]深圳职业技术学院自动化技术研究所,广东深圳518055 [2]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《电力电子技术》2010年第1期90-92,共3页Power Electronics

基　　金：深圳市科技计划资助项目(公共科技类)(08KJfb033)~~

摘　　要：传统三电平电路的空间矢量调制(Space Vector Pulse Width modulation,简称SVPWM)因运算复杂,限制了它在实际中的应用。提出一种新的SVPWM算法,把空间平面划分为12个直角三角形区域,用空间电压矢量所在的直角三角形所对应的基本开关矢量来合成。对该算法进行了详细的数学推导,并给出了软件流程图。在实验室建立了三电平功率因数校正电路,通过DSP运用该算法来控制,实验结果证明该算法简单易行,便于数字化实现。Conventional space vector pulse width modulation（SVPWM）algorithm for three-level circuit is not widely used in practice for its complicated calcu-lations.A novel SVPWM algorithm is proposed.In this novel algorithm,the space plane is divided into 12 right-angled triangle fields,and the space voltage vector is synthesized by several switch vectors corresponding to the right-angled triangle which contains the terminal of the reference vector.Mathematical calculations of this algorithm are performed and the software flow chart is given.The algorithm is simple and convenient for digital realization.A three-level PFC circuit is set up in lab and the algorithm is applied to it by DSP.The experimental results prove the feasibility of this algorithm.

关 键 词：功率因数 三电平 空间矢量调制 中点电压平衡 

分 类 号：TM714.1[电气工程—电力系统及自动化]