Applied to superconducting motor rotor microvolt dc voltage detection technology research

Quench detection and protection of superconducting coil is an important subject of superconducting power technology practical application, in order to detecting the superconductor quenches signal quickly and accurately, on the basis of the existing super voltage loss test, this paper put forward a kind of microvolt dc voltage signal detection amplifier for superconducting motor rotor, through using the isolation of microvolt straight loss super voltage signal, the matching design of input line, the specific design of hardware experimental platform, realize detection and amplification for quenches voltage signal. The experimental result shows that the system has met the superconductor quenches for signal detection of superconducting motor precision rapidity requirements.