空间电压矢量PWM技术及其在有源电力滤波器中的应用  

Technique of Voltage Space Vector PWM and its Application on Active Power Filter

作　　者：华晓萍[1] 王奔[1] 孟庆波[1] 兰金茹[1] 吴晨光[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《自动化信息》2005年第8期30-34,共5页Automation Information

摘　　要：首先叙述了空间电压矢量PWM（缩写SVPWM）技术的基本原理，详细推导了空间电压矢量的形成、分布以及合成方法．并对不同合成方法时的开关损耗进行了比较，总结各自优缺点及适用场合。然后，在此基础上介绍了一种基于SVPWM技术的有源电力滤波器内环电流预测控制方案。有源电力滤波器是一种能动态地抑制谐波电流和补偿无功功率的电力电子装置，其补偿特性不受系统阻抗的影响？采用该方案控制的有源电力滤波器，能够精确地对频率和幅值都变化的谐波进行补偿。Firstly, in this paper describes the basic principle of Pulse Width Modulation technique based on voltage space vectors （abbrev.SVPWM）, amply derives the formation, distribution and composite method of voltage space vectors, and compares the switch loss between the different composite methods, as well as summarizes theirs advantages, disadvantages and applicable occasions. Afterwards, introduces an inner-loop current predictive control scheme of Active Power Filter based on technique of SVPWM. The Active Power Filter is a kind of power electronic device that can restrain harmonic currents and compensate reactive power dynamically, its compensation trait hasn＇t been affected by the system impedance. The Active Power Filter controlled by this method can accurately compensate harmonic currents both with the varying frequency and amplitude.

关 键 词：空间电压矢量PWM 有源电力滤波器 数字信号处理器 PWM技术 应用 电力电子装置 补偿特性 合成方法 控制方案 谐波电流 

分 类 号：TM351.012[电气工程—电机] TN713.8[电子电信—电路与系统]