江苏大学学报（自然科学版）2013，Vol.34Issue(2)：178-183,6.DOI:10.3969/j.issn.1671-7775.2013.02.010
有源电力滤波器双滞环电流控制新方法
A novel double hysteresis current control for active power filter
摘要
Abstract
To improve harmonic current tracking performance of shunt active power filter ( APF) based on double hysteresis current control strategy of voltage space vector, a novel 4-level α-β hysteresis comparator was proposed. The control strategy was directly implemented on α-β coordinates. The 4-level α-β hysteresis comparators were inputted current error vectors and outputted 4 state values to determine the location region of current error vectors. The differential relationship between reference voltages and reference currents was discretely calculated to determine the location region of reference voltage vectors. The optimum output switching vector at each instant was selected according to state values output of two 4-le-vel α-β hysteresis comparators and reference voltage vector. The compensatory current error was limited within the hysteresis width. APF models with constant load and variable load were established and simulated by Matlab/Simulink software. The results show that the proposed strategy can efficiently increase the utilization of DC bus with fast response. The total harmonic distortion of power grid current drops from 21.65% to 3. 11% , and the per phase switching number in one power supply cycle decreases from 342 of the conventional hysteresis control to 230 of the proposed method at steady state.关键词
有源电力滤波器/电能质量/谐波/滞环控制/电压空间矢量Key words
active power filter/ power quality/ harmonic/ hysteresis control/ voltage space vector分类
信息技术与安全科学引用本文复制引用
陈兆岭,刘国海,魏明洋..有源电力滤波器双滞环电流控制新方法[J].江苏大学学报（自然科学版）,2013,34(2):178-183,6.基金项目
国家自然科学基金资助项目(51077066) （51077066）
江苏高校优势学科建设工程项目(苏政办发[2011]6号) （苏政办发[2011]6号）
