测井技术2013，Vol.37Issue(1)：71-74,4.
模块式动态地层测试器井下大功率电机供电系统设计
The Power Supply System Designing for Underground High-power Motor of Formation Dynamics Tester (FDT)
陈宝 1朱斌 1何绪新 1刘付火 1武向萍 1唐金波1
作者信息
摘要
Abstract
Underground motors of FDT (Formation Dynamics Tester) require high currents and abrupt working-status-change adaptability. Therefore, regular three-terminal regulator circuit has these limitations. Abrupt changes of motor status will bring dramatic changes in system power supply, which causes not only motor and tool failure, but also potential damages for both circuits and motor. A locked-loop control system that combines both surface and underground circuits adopts a designing approach that uses both voltage adjustment and transient over-voltage protection designing, which guarantees the reliability of both underground circuits and motor, and therefore controls the supply power within a proper range through reducing the output voltage of the surface power and enhancing the underground power. The power signal feedback circuit set up through wireline tele-transmission system makes the surface programmed power and underground power (50 V) combine together so as to keep the motor stably working at 50 V when the underground power suddenly changes. The underground power protection circuit and auto-adjusting system of the surface programmed power keep the switch on even when the output voltage of the underground power (50 V) abrubtly goes up.关键词
地层测试器/大功率直流电机/过压保护/空转/程控电源Key words
formation tester/ high-power DC motor/ over-voltage protection/ idle/ programmable power supply分类
天文与地球科学引用本文复制引用
陈宝,朱斌,何绪新,刘付火,武向萍,唐金波..模块式动态地层测试器井下大功率电机供电系统设计[J].测井技术,2013,37(1):71-74,4.
