一种矿用本质安全型设备软启动电路的设计

摘要

针对矿用设备启动时产生的瞬间大电流易导致供电电源截止、进而导致设备启动异常的问题,介绍了一种由简单元件组成的矿用本质安全型设备软启动电路的设计;给出了该电路原理,分析了该电路的软启动性能、限流特性、延时特性和欠压断电特性.试验结果验证了该电路的有效性和可靠性.%For problems that instantaneous large current in start of mine-used devices could lead to power supply cutting-off and abnormal start of the devices, the paper introduced design of a kind of softstart circuit for mine-used intrinsic safety devices which is composed of simple components. It gave principle of the circuit and analyzed performances of soft-start, current limit, delay and under-voltage cutting-off of the circuit. The test result proved validity and reliability of the circuit.