Reliability Analysis of a Pulsed High Magnetic Field Facility at WHMFC

To accurately evaluate the reliability of Pulsed High Magnetic Field Facility (PHMFF) at the Wuhan National Pulsed High Magnetic Field Centre (WHMFC), a reliability analysis method based on a Markov chain is introduced in this paper. Because PHMFF is developed to generate a pulsed high magnetic field for scientific experiments by dynamically constructing diversified magnetic field systems, the reliability of PHMFF is in fact determined by the actual operating magnetic field system. Considering that all magnetic field systems are composed of pulsed power modules, magnets, control modules and experimental test systems, in this paper, the reliability of these critical modules is first discussed. In the analysis of modules, the failure mode and effect analysis (FMEA) method is used to determine the main failure modes, and then a Markov chain is established to analyze and calculate the reliability of the modules. Finally, based on the reliability of critical modules, the reliability of two typical magnetic field systems was estimated according to the reliability block diagram. The calculation results show that the reliability of all modules is above 95%, and although in complex magnetic field systems, the reliability still meets the experimental requirements.