60°坐标系下三电平逆变器SVPWM控制方法研究  

Research on SVPWM control method of Three-level Inverter in 60° coordinate system

作　　者：苏鑫 郭兴众[1] SU Xin;GUO Xing-zhong(College of Electrical Engineering,Anhui Polytechnic University,Anhui Wuhu 241000,China)

机构地区：[1]安徽工程大学安徽省检测技术与节能装置重点实验室

出　　处：《齐齐哈尔大学学报（自然科学版）》2019年第6期35-40,共6页Journal of Qiqihar University(Natural Science Edition)

基　　金：安徽省科技计划项目(1604b0602025);安徽省高校学科(专业)拔尖人才项目(gxbjZD20)

摘　　要：对于二极管箝位型三电平逆变器拓扑结构的分析,针对在传统的直角坐标系下SVPWM算法存在要进行大量的三角函数运算和扇区判断,计算量大,以及中点电位不平衡等问题。本文阐述一种在60°坐标系下三电平逆变器SVPWM实现方法,具体通过坐标变换,坐标旋转,简化扇区判断,在中点电位平衡中采用滞环控制和准确控制相复合的控制策略,解决单独控制的不足。通过MATLAB仿真结果表明,该方法可以完成三电平逆变,维持中点电位平衡,验证了方法的可行性。For the analysis of the topology of the diode clamp type three-level inverter,for the SVPWM algorithm in the traditional Cartesian coordinate system,there are a large number of trigonometric functions and sector judgments,large calculation amount,and midpoint potential imbalance problem.This paper describes a three-level inverter SVPWM implementation method in the coordinate system,specifically through coordinate transformation,coordinate rotation,simplified sector judgment,hysteresis control and accurate control phase combination control strategy in midpoint potential balance,solve the lack of individual control.The simulation results of MATLAB show that the method can complete the three-level inverter and maintain the midpoint potential balance,which verifies the feasibility of the method.

关 键 词：三电平逆变器 60°坐标系 SVPWM算法 中点电位 

分 类 号：TM464[电气工程—电器]