Affiliation of Author(s):自动化学院
Journal:Dianli Xitong Zidonghue
Abstract:To improve the reliability of modular multilevel converter (MMC), the submodule failure should be detected and located rapidly when fault occurs. The speed characteristics of fault diagnosis are analyzed during submodule failure in the MMC. A new rapid diagnostic method for fault is proposed. For fault detection, the improved model predictive method is used to detect the fault by comparing the difference between the predictive value and the measured value with the threshold value and then the failures are located rapidly by comparing the slopes of submodule voltage. The proposed method can locate multiple submodule failures without additional sensors and can easily be implemented with the use of a microprocessor. Finally, the proposed method has been validated by the results of an MMC simulation and experiment platform. © 2017 Automation of Electric Power Systems Press.
ISSN No.:1000-1026
Translation or Not:no
Date of Publication:2017-09-25
Co-author:徐坤山,袁晓峰,颜晔
Correspondence Author:徐坤山,xsj
Date of Publication:2017-09-25