Study on the New SVPWM Method for three-level Inverter of Brushless Doubly-Fed Machine

摘要：

　　Brushless doubly-fed machine (BDFM) is a new type of AC induction motor.It has a good applicable prospect as the variable frequency motors or the variable speed constant frequency generators.Although the advantage of the three-level inverter,there are also some problems of neutral point voltage balance in this method such as the unbalance of neutral point voltage.And the traditional principle of Three-level inverter space vector pulse width modulation method is to estimate the sectors and calculating a lot of trigonometric functions.To solve these problems,a novel method for the virtual space vector concept in G-H coordinate system is presented in this paper.The method proposed can omit the judging process of the sectors,reduce the calculating burden,and maintain the balance of neutral-point voltage between capacitances within a certain index modulation.The results of simulation are given to validate the improved virtual space vector modulation.

关键词： Brushless doubly-fed machine three-level virtual vector 60° coordinate system

作者: Yan Liu Xu Wang Yan Xing Dan Yang

作者单位: School of Information Science & Engineering, Northeastern University, Shenyang 110819, China

会议类型: 国际会议

会议名称: The First International Workshop on Hydraulic Equipment and Support Systems for Mining (第一届液压技术与矿山装备国际研讨会(IWHEM2012))

会议地点: 辽宁葫芦岛

会议语种:英文

页码: 156-159

在线出版日期: 2012-08-07（万方平台首次上网日期，不代表论文的发表时间）