【摘要】 针对矿井本质安全电源应用中存在的本安输出容量小、带负载能力不足问题,提出一种能够实现大容量本安输出的逐周期过流保护安全栅电路设计方案。该方案结合常用的过流保护安全栅电路的优缺点,通过对本质安全电源的负载特性、低功耗损耗和快速反应特点进行研究,采用开关型稳压电路和脉冲周期过流保护电路一体化的闭环控制设计,解决了本质安全电源电路存在的功耗大、锁定效应和容量瓶颈问题。实验结果表明,该方案取得了良好的容性负载和感性负载的启动和自恢复特性,实现了大容量本安输出。更多还原

【Abstract】 Aiming at the problem of low output capacity and insufficient load capacity in the application of the mine’s intrinsic safety power supply,put forward a design scheme for a safety barrier circuit based on cycle by cycle over-current protection,which can realize the output of large capacity.The scheme combining with the advantages and disadvantages of the commonly used over-current protection safety gate circuit,based on intrinsic safety power supply load characteristic, low power loss and rapid response characteristics are studied,using the closed-loop control design of switching regulator circuit and pulse cycle over-current protection circuit,solves problems of high power consumption,lock-in effect and capacity bottleneck of the intrinsic safety power supply circuit. The experimental results show that the proposed scheme has achieved good startup and self-recovery features of capacitive loads and inductive loads, and realized the intrinsic safety power output of large capacity.更多还原