Control method for improving reliability of closing and opening permanent magnetic vacuum circuit breaker

被引：0
|
作者：
Lü J. [1 ]
Liu J. [1 ]
Han Y. [1 ]
Ye Z. [1 ]
Yu Q. [1 ]
机构：
[1] Creative Distribution Automation Co., Ltd., Beijing
来源：
Lü, Jinbo (wanyoucn@126.com) | 1600年 / Science Press卷 / 42期
关键词：
Hysteresis control; Permanent magnet actuator; PWM; Synchronous control; Vacuum circuit breaker;
D O I：
10.13336/j.1003-6520.hve.20161128037
中图分类号：
学科分类号：
摘要：
Time for opening and closing vacuum circuit breaker (VCB) in the presence of permanent magnet actuator(PMA) can be kept stable by controlling the coil current. In order to improve control accuracy of the current, and make the switching more reliable, we proposed a hybrid pulse-width modulation (PWM) control method, analyzed reasons why the accuracy of the current output by controller was affected, and described the principle for hybrid pulse-width modulation in detail. Moreover, Factors that would impact the duty cycles were analyzed in detail, and both the accurate calculating and the approximate calculating methods for the reference duty cycle's value of hybrid PWM were given. Experiments have verified that opening and closing VCB will be more reliable when using hybrid PWM control method, which can effectively reduce the ripple of the current and improve the quality of the output current. By using the control method, the deviation of the current can be reduced by more than 86%. © 2016, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：3989 / 3995
页数：6
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