基于无效器件原理的逆变器死区补偿方法  

Dead-time Compensation for Voltage Source Inverter Based on Invalid Apparatus Principle

作　　者：张永锋[1] 李红梅[1] 赵振[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院

出　　处：《安徽科技学院学报》2008年第1期40-43,共4页Journal of Anhui Science and Technology University

基　　金：国家自然科学基金资助项目(5057713);安徽省教育厅重点资助项目(KJ2007A062)

摘　　要：PWM逆变器死区的存在对异步电动机变频调速系统的动态、静态性能及稳定性均产生了许多负面影响。针对DSP控制的电压源型PWM逆变器,文中提出一种基于无效器件原理的死区补偿方法,利用DSP检测定子电流,通过软件编程只给有效器件送驱动信号,达到补偿的目的,具有外接电路简单,成本低,易于实现等特点,数字仿真结果证实了其补偿效果。Dead -time of PWM inverter has some negative influences on performance character and stability in the asynchronous machine controlled by variable voltage frequency （VVF） system. Based on invalid apparatus principle, a method is proposed and applied to a DSP controlled voltage source inverter （VSI） for dead -time compensation. The proposed method only presents driving signals for valid apparatus by detecting stator current and programming with DSP in order to compensate the dead - time. It possesses the merits such as low cost, simple circuit and easy realization, and simulation results verify its validity.

关 键 词：DSP 电压源型逆变器 无效器件原理 死区补偿 

分 类 号：TM343.2[电气工程—电机]