时变感性负载的APF控制策略比较与仿真  

Comparison and simulation of APF control strategies with time varying inductive load

作　　者：张丽霞[1] 万纪博 魏志远 康伟[1] 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]中国石油华北油田公司,河北沧州062552

出　　处：《北京交通大学学报》2014年第5期103-107,113,共6页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金青年基金项目资助(51207170);中央高校基本科研业务费专项资金资助(14CX02172A;14CX02085A)

摘　　要：针对应用于油田中的相控整流技术所产生的谐波,本文采用APF(有源电力滤波器)来滤除此谐波,对电流滞环、三角载波和SVPWM的3种控制策略进行研究.对比了不同开关频率下3种控制策略的滤波效果,针对存在的不足,本文提出了基于线性切换理论的APF控制策略和实现方法.仿真结果表明,线性切换理论在谐波严重的场合具有更好的滤波效果;而触发角不大和谐波比较小时,与其他3种策略没有明显的差距.因此,线性切换适用于阻抗变化大且触发角比较小的整流设备的谐波治理.According to the harmonic applied oil deposit which phase-controlled rectifying technology produced,this paper adopts APF（ active power filter） to filter out the harmonic. The current hysteresis,triangular wave and SVPWM-three kinds of strategies are discussed. Compared with filtering effect of 3kinds of control strategies under different switching frequencies,this paper puts forward APF control strategy based on the theory of linear switched system and the realization method in view of the existing problems. The simulation results show that the filtering effect of switched linear theory is better where harmonic is serious; when the trigger angle and harmonic is small,compared with other three strategies,there is no obvious difference. Therefore,when the impedance changes big and triggering angle of rectifier equipment changes small,linear switches are suitable for harmonic suppression.

关 键 词：有源电力滤波器 电流滞环 三角载波 空间矢量脉宽调制(SVPWM) 线性切换 

分 类 号：TN713.8[电子电信—电路与系统]