Affiliation of Author(s):自动化学院
Journal:2017 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
Key Words:fault diagnosis fault detection fault location modular multilevel converter(MMC) submodule failure
Abstract:To improve the reliability of modular multilevel converter (MMC), the fault submodules must be isolated rapidly. In this paper, a new fast fault diagnosis method is proposed containing two steps: fault detecting and fault locating. Fault detection step finds failures by improved predictive model which detects the fault by comparing the difference between the predictive value and the measured one of the arm current with the threshold value. Then the failures are located by the proposed location method which contains two process: feature mining and fault location. The proposed method could locate multiple submodule failures without additional sensors rapidly and can be easily implemented with a microprocessor. The proposed method has been validated by the simulation results.
ISSN No.:2329-3721
Translation or Not:no
Date of Publication:2017-01-01
Co-author:Xu, Kunshan,Yan, Ye,Zhang Zhaoming,Zhang, Binfeng,Qian, Qiang
Correspondence Author:xsj
Date of Publication:2017-01-01