级联逆变器H桥输出电平单位坐标化矢量调制  

Vector modulation by unit coordinate of H-bridge output level for cascaded inverter

作　　者：朱思国[1] 欧阳红林[1] 朱英浩[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《华中科技大学学报（自然科学版）》2011年第3期87-91,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：湖南省科学技术厅科技计划资助项目(06CK3005)

摘　　要：通过将单个H桥输出电平单位坐标化,提出了用于H桥级联型逆变器的一维和二维矢量调制方法,该调制方法中H桥的开关状态以坐标的形式出现在一维或二维坐标系中.对一维矢量调制,通过查表法可以求取开关状态与作用时间;对二维矢量调制,通过几何方法求取开关状态与作用时间,从而大幅度简化了开关状态的选择与作用时间的计算.实验结果验证了所提方法的可行性.One or two dimensional vector modulation method was proposed by turning H-bridge′s output levels into the coordinated units. In the modulation method, switching states of H-bridge existed in one-dimensional or two-dimensional coordinate system in the form of coordinate. For one-dimensional vector modulation and two-dimensional vector modulation, switch state and action time were obtained through the look-up table method and geometric method, respectively, which greatly simplified the switch state selection and switch time calculation. Finally, experimental results demonstrate the feasibility of the proposed method.

关 键 词：级联型逆变器 输出电平 矢量调制 坐标系 几何方法 开关状态 

分 类 号：TN761[电子电信—电路与系统]