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一种基于动态电弧识别及关断技术的截流型保护电路

更新时间:2020-10-27 11:50:27 大小:2M 上传用户:gsy幸运查看TA发布的资源 标签:动态电弧识别 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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传统的输出本质安全型开关电源输出采用限压限流等保护措施,存在动态响应慢、输出功率小等问题。动态电弧识别及关断是通过检测电气系统动态参数、在系统中关键参数超过临界值而将系统迅速过渡到安全状态的一种技术。将动态电弧识别及关断技术应用到输出本质安全型开关电源中,当输出发生故障而产生电弧时,检测到电弧电流变化率超过预先设置的临界值,迅速切断电源,使得产生的电弧能量低于最小点燃能量,因此进一步提高本质安全型开关电源的功率。本文设计了输出截流型保护电路,通过仿真和实验,验证了采用动态电弧识别及关断技术可以提高本质安全型开关电源的输出功率。

The traditional output intrinsically safety switching power supplies take some protection measures in the output, such as overvoltage protection, overcurrent protection and short current protection, whose response of dynamic is low and the power is small. Dynamic arc recognition and termination (DART) is a method of transiting the system to a safe state rapidly when the critical parameters of the system exceed the critical value by detecting electrical system faults dynamically. This paper will make DART technology apply to the output intrinsically safety switching power supply. When faults occur, the rate of current conversion detected exceeds the pre-set critical value and the power is cut off immediately. Due to the short response time, the arc energy generated at this time is lower than the minimum ignition energy (MIE), so the power of the output intrinsically safety switching power supply can be further improved. Also a set of protection circuit is designed, and through simulation and experiment, it is further verified that DART technology can improve the output power of the intrinsically safety switching power supply.

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一种基于动态电弧识别及关断技术的截流型保护电路.pdf 2M

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