电网不平衡下PWM整流器滑模变结构控制  

PWM Rectifier Under Unbalanced Grid Voltage Condition Based on Sliding Mode Variable Structure Control

作　　者：严广[1] 蔡世冠 张旭[1] 李传号 YAN Guang CAI Shi-guan ZHANG Xu LI Chuan-hao(China University of Mining ＆ Technology, Xuzhou 221008, China)

机构地区：[1]中国矿业大学,信息与电气工程学院,江苏徐州221008

出　　处：《电力电子技术》2017年第1期1-3,共3页Power Electronics

摘　　要：提出一种电网电压不平衡下基于滑模变结构控制(SMVSC)的脉宽调制(PWM)整流器直接功率控制(DPC)算法,其控制目标是消除有功功率振荡并保证网侧电流正弦。通过对三相PWM整流器进行功率分析,无需正、负序分量提取即可得控制目标下有功、无功功率补偿值,进而实现控制目标,仿真和实验结果验证了其有效性。The direct power control （DPC） algorithm for pulse width modulation （PWM） rectifier based on sliding mo- de variable structure control（SMVSC） under unbalanced grid voltage is proposed.It＇s control objective is to eliminate active power fluctuation and ensure sinusoidal grid-side current.Through analysis of three-phase PWM rectifier power, control commands can be achieved through corresponding power component compensations of active power and reac- tive power and there is no need to extract positive sequence and negative sequence.Simulation and experimental results verify the effectiveness of the proposed algorithm.

关 键 词：整流器 滑模变结构控制 直接功率控制 

分 类 号：TM461[电气工程—电器]