基于DSP的有源电力滤波器数字控制系统  

Digital Control System of Active Power Filter Based on DSP

作　　者：张继军[1] 孙宁[2] 刘国海[2] 

机构地区：[1]安阳工学院电子信息与电气工程系,河南安阳455000 [2]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《仪表技术与传感器》2008年第8期72-74,共3页Instrument Technique and Sensor

基　　金：江苏省高新技术项目(GB2004024);江苏省江市攻关项目(GY2005005)

摘　　要：对基于TMS320F240 DSP芯片的有源电力滤波器数字控制系统进行了研究。采用ip、iq运算方式得到负载电流中的谐波电流作为指令信号,然后通过三角波比较法产生PWM信号,以控制主电路开关器件的通断产生实际的补偿电流。设计了谐波电流检测电路、驱动电路以及主电路等硬件部分,给出了产生指令信号和PWM信号的软件流程。实验表明该系统具有良好的实时性和准确性。A digital control system of active power filter based on chip TMS320F240 was researched. The harmonic current in load current was the command signal which was attained with ip, iq algorithm. PWM signal which was used to control the main circuit for actual compensating current was attained by triangular wave control. The hardware configuration including the detection circurt of harmonic current, the drive circuit and the main circuit were designed. The software flow chart of the implementation of the compensating signal and PWM wave were given. The correctness and validity of the filter were proved by the experiment.

关 键 词：DSP 有源电力滤波器 数字控制 谐波电流 PWM 

分 类 号：TN713.8[电子电信—电路与系统]