电力系统保护与控制Issue(4)：105-109,5.
继电保护PWM电流功放的三种闭环控制方法对比研究
Comparative study of three closed-loop control methods for PWM current amplifier of relay protection
周鹏鹏 1王峥夏 1李志勇 1李书琰 2王兰君1
作者信息
- 1. 许昌开普电器检测研究院，河南 许昌 461000
- 2. 许昌供电公司，河南 许昌 461000
- 折叠
摘要
Abstract
As the output stage of power system real-time simulation and relay protection testing, the current type power amplifier needs high precision and quick response. There are two kinds of manners to implement the current type power amplifier: linear power amplifier and PWM power amplifier. The PWM power amplifier gains widespread concern due to its high output efficiency. But compared to the linear power amplifier, it needs to resolve the complicated problem of filtering output and closed-loop control. The paper designs three closed-loop control methods applicable to the current type power amplifier, makes detailed numerical analysis and research, contrasts the different emphasis of the three control methods in low frequency accuracy, response speed and amplitude accuracy, and offers suggestion to the choice of three control methods.关键词
继电保护/PWM电流功放/输出滤波器/闭环控制方法/数值分析Key words
protection relay/PWM current amplifier/output filter/closed-loop control method/numeric analysis分类
信息技术与安全科学引用本文复制引用
周鹏鹏,王峥夏,李志勇,李书琰,王兰君..继电保护PWM电流功放的三种闭环控制方法对比研究[J].电力系统保护与控制,2014,(4):105-109,5.
