A novel dynamic voltage restorer and its unbalanced control strategy based on space vector PWM

被引：28
|
作者：
Ding, HF [1 ]
Shu, SY [1 ]
Duan, XZ [1 ]
Jun, G [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Dept Elect Power Engn, Wuhan 430074, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2002年 / 24卷 / 09期
基金：
中国国家自然科学基金;
关键词：
dynamic voltage restorer; PWM inverter; emitter follower; three-phase voltage unbalance; unbalanced control strategy; space vector;
D O I：
10.1016/S0142-0615(02)00004-2
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel dynamic voltage restorer which is composed of a conventional three-phase voltage source inverter and an emitter follower is presented in this paper to reduce the adverse effects on sensitive loads caused by three-phase supply voltage unbalance in distribution systems. The adverse effect caused by the negative sequence component of the supply voltage can be eliminated and the load voltage magnitude can be restored to specified value by using the three-phase voltage-source inverter; The emitter follower is capable of eliminating the adverse effect caused by the zero sequence component of the supply voltage. An unbalanced control strategy based on space vector PWM is presented to realize the fast dynamic response of the dynamic voltage restorer. Feasibility of this method is verified by digital simulation. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：693 / 699
页数：7
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