两种电容快速放电方法研究  

Reserch on Two Methords of Capacitor Discharge

作　　者：焦龙飞 安伟 迟雷[2] 陈龙坡 张崇 Jiao Longfei;An Wei;Chi Lei

机构地区：[1]河北北芯半导体科技有限公司 [2]中国电子科技集团公司第十三研究所

出　　处：《安全与电磁兼容》2023年第3期73-76,共4页Safety & EMC

摘　　要：电容使用完成后必须对其进行放电,以保证使用者的安全和延长电容的使用寿命。传统电容放电方式是采用自然放电或连接恒定电阻放电,对于大电容、高电压的电容需较长的放电时间。为提升电容放电速率,提出了两种快速放电法。增大放电电流,改变放电过程中放电电阻的阻值,保证放电电流保持在较高水平,从而大幅减少放电时间。结果表明,采用电机控制放电电阻随时间均匀变化可达到最快的放电速率,比连接恒定电阻的放电速率提升5倍左右;采用继电器控制放电电阻阻值阶跃变化可提升电容放电速率,比连接恒定电阻放电速率提升1倍左右。After the capacitors were used,they must be discharged to ensure the safety of the user and prolong the service life of the capacitors.Traditional capacitor discharge methods are natural discharge or connected with constant resistance discharge,which requires a long discharge time for capacitors with large capacitance and high voltage.In order to increase the discharge rate of capacitor,two rapid discharge methods were proposed.On the basis of increasing the discharge current,kept the discharge current at a higher level by changing the resistance value of the discharge resistance in the discharge process,and the discharge time was greatly reduced.The results show that the fastest discharge rate can be achieved by using motor to control the uniform change of discharge resistance over time,and the discharge rate is increased by about 5 times compared with that of connecting constant resistance;the discharge rate of capacitor can be increased by a step change of discharge resistance value controlled by relay,and the discharge rate is increased by 1 times compared with that of connecting constant resistance.

关 键 词：电容 放电装置 快速放电 自动控制 

分 类 号：TM53[电气工程—电器]