三相电压型PWM整流器不平衡控制策略的研究  

Unbalanced Control Strategy of Three-phase Voltage Source PWM Rectifier

作　　者：郑征[1] 张子伟[1] 张朋[1] 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《电气传动》2014年第5期26-30,共5页Electric Drive

基　　金：国家自然科学基金(61340015);国家自然科学基金(51077125);河南理工大学博士基金(B2012-108)

摘　　要：分析电网不平衡状态时三相电压型PWM整流器特性基础上,提出了预测电流控制算法。它与传统的双电流独立内环控制算法相比,无需进行网侧电流正、负序分量计算,并省去4个内环调节器,很大程度上简化了算法和提高了系统计算速度。通过RT-LAB半实物实时仿真实验结果表明,该控制方法具有结构、算法简单,动态响应快,输出电压稳定性好,功率因数高的特性。Themain circuit topology of three-phase PWM rectifier under unbalanced input voltage condition was analyzed. Based on the analysis of characteristics of PWM rectifier, the predictive current control was proposed. The proposed predictive current controller is significantly simplified in algorithm to improve the calculation speed. Compared with the double current independent inner loop control, this novel control method requires no extraction of positive and negative sequence components of net side current and get rid of four PI controllers. The experiment results of RT-LAB hardware-in-the-loop simulation show that predictive current control has advantages such as fast dynamic response, good performance of output voltage stability and high power factor.

关 键 词：电压型PWM整流器 电网不平衡 预测电流 RT-LAB半实物实时仿真 

分 类 号：TM464[电气工程—电器]