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EAST装置做为全超导托卡马克装置,在实验过程中可能会在装置探测信号上产生对地几千伏的高压.系统设计时要求探测信号能够承受10KV的对地耐压,同时和后续控制系统能够做有效隔离.检测信号采用光纤隔离器,一方面隔离高压,同时能够有效抑制长距离传输带来噪声信号.随着装置实验不断发展,出现一些在初始设计时没被考虑的状态,经过设备优化,优化电气性能.本文主要介绍光纤隔离器设计原则,优化设计及实验测试结果.
As an all-superconducting Tokamak device, the EAST device may generate a voltage of several thousand volts on the ground during the test of the device, and the system design requires that the detection signal withstand a ground withstand voltage of 10 kV, and at the same time, The control system can effectively isolate the signal using optical fiber isolators, on the one hand to isolate the high voltage, while being able to effectively inhibit long-distance transmission to bring noise signal.With the continuous development of the device experiment, there are some not considered in the initial design state, After the optimization of equipment to optimize the electrical performance.This paper mainly introduces the design principle of optical fiber isolator, the optimal design and experimental test results.