半导体温差模块在热缺陷监测中的应用

The application of semiconductor thermoelectric generator in the thermal defects monitoring

通过对变电站运行设备大电流回路连接点发热原因及环境的分析,提出了一种利用半导体温差发电模块结合充电泵和升压型DC-DC变换电路,以单片机测温电路为负载,采用间歇工作的方式为现场测温电路提供电源。重点解决了在半导体温差发电模块输出电压不稳定、压差较小时,DC-DC变换器超低压启动的难题,并结合实际应用环境对现场独立供电和测温装置的组成以及工作方式做了进一步探讨。

The substation equipment to run large current-loop connection point cause of fever and the environment, the use of a thermal power semiconductor module and the combination of step-up charge pump DC-DC conversion circuits to single-chip temperature t circuit for the load, using intermittent work at the scene for the temperature measurement circuit to pro- vide power. Focused on solving the thermal power modules in semiconductor output voltage instability, small pressure differential, DC-DC converters start of the ultra-low-voltage problems, combined with the practical application of the environment at the scene of an independent power supply and temperature measurement devices, as well as the composition of the work carried out further explore.