Design of wide range DC input power module used in coal mine
-
摘要: 针对矿用传感器与直流供电系统电源电压等级不一致、电源类型不相符的问题，提出了一种新型宽范围直流输入的本安型电源模块设计方案。该电源模块基于Buck和隔离反激拓扑设计，前端采用Buck电路避免了直接采用反激拓扑而导致开关管承受高耐压所带来的风险，后端采用隔离反激拓扑满足了非本安端和本安端的电气隔离要求，具有输入防反接、DC9～350 V范围直流输入、本安电源输出、易于集成的优点。Abstract: In view of problems that power supply voltage level and power type between mine-used sensors and DC power supply system is inconsistent, a design scheme of new type of wide range DC input and intrinsic safety type power module was put forward. The power module is based on Buck and isolated flyback topology, front-end uses the Buck circuit to avoid risk caused by direct use of the flyback topology which may bring high pressure to switch tube, and the back-end uses isolated flyback topology to meet isolation requirements of electrical equipment with non-intrinsic safety and intrinsic safety. The power module has advantages of anti reverse input, DC9-350 V input, intrinsic safety power output and easy integration.
-
计量
- 文章访问数: 59
- HTML全文浏览量: 4
- PDF下载量: 12
下载:
