基于稳定中点电位的电压矢量合成法  

The Synthesized Method of the Voltage Vector Based on Neutral-Point Voltage Stability

作　　者：秦虹[1,2] 潘再平[1] 张涛[1] 

机构地区：[1]浙江大学,浙江杭州310027 [2]浙江工业职业技术学院,浙江绍兴312000

出　　处：《机电工程技术》2008年第10期81-83,共3页Mechanical & Electrical Engineering Technology

摘　　要：在三电平逆变器直接转矩控制系统中,中点电位的稳定与否,对系统运行的可靠性有很大影响。本文通过电压矢量分析,提出了一种直接转矩控制电压矢量的选择与合成方法,该方法能按照一定的顺序,生成不同电压矢量,实现直接转矩控制,同时控制中点电压稳定,对分析结论进行了程序仿真和实际装置试验,结果都证明了该方法的有效性。It is believed that it has great influence on the credibility of the system run whether neutral-point voltage balanced or not in the three-level inverter direct torque control system. Through the analysis of voltage vector, this paper puts forward a new synthesized method of direct torque control electric voltage vector. This new method can produce dissimilarity electric voltage vector according to a certain proper order and carry out direct torque control. Meanwhile it can control neutral-point voltage stability as well. The author experiments the conclusion by the simulation procedure with actual equipments and this new method is proved to be useful.

关 键 词：三电平逆变器 电压矢量 直接转矩控制 中点电压稳定 

分 类 号：TM464[电气工程—电器]