Research on High Power IGBT Digital Driving Method of Vehicle Converter
Firstly,the drive of high-power IGBT in vehicle converter is deeply analyzed and studied in this paper,put forward the protection framework and idea of digital driver.Then it expounds the important role of digital pulse distribution protection as IGBT drive pre-processing,and lists the main functions of pre-processing.Then,the influence of driving resistance on the switching performance in the process of IGBT switching is analyzed,and a protection scheme combining digital driving and analog circuit is proposed.Finally,the test is designed to obtain the driving characteristics corresponding to different gate resistances in the process of on-off,and the optimal switching scheme is obtained combined with the switching characteristics of IGBT.The test results show that the digital drive scheme greatly reduces the loss and di/dt in the turn-on process and du/dt in the turn-off process.This research result has been applied to lots of existing high power locomotives and EMUs.
high power IGBTconverterlocomotive and EMUdigital drive technology
万方数据
维普
