Aiming at the problem of IGBT failure in the power supply of dipole magnet in Heavy Ion Research Facility,this paper uses the method of combining theoretical analysis and practical test to diagnose the cause of the equipment failure. Firstly,the topology of the power supply is introduced,and the working principle of the power supply is analyzed. From the IGBT drive,maximum junction temperature,junction temperature fluctuation and other aspects of analysis and simulation test,the impact of junction temperature fluctuation on IGBT reliability in pulse mode is obtained,and the IGBT life in specific mode is predicted,which is helpful to improve the reliability and maintainability of the equipment.
IGBT driverJunction temperaturelJunction temperature fluctuationReliability
维普
万方数据
