Affiliation of Author(s):自动化学院
Journal:IEEE TRANSACTIONS ON POWER ELECTRONICS
Key Words:Modular multilevel converter optimal design methods steady-state performance system stability system time delay transient response
Abstract:The system time delay (STD) is typically neglected in the design of a modular multilevel converter system. However, the STD can cause different types of deteriorations, including a decrease in system stability, a weakening of the steady-state performance, and a deceleration of the transient response when the load changes. This study first provides the generation mechanism and classification of the system time delay. Then, a linear model is developed to form the basis of the analysis for the system time delay. Subsequently, an analytical method is used to provide an accurate description of the relation between the STD and corresponding deteriorations. Based on the analysis, the optimal design methods of the system controller parameters are proposed to effectively mitigate these deteriorations. Finally, the deteriorations caused by the STD and efficiency of the optimal design methods are demonstrated via experiments.
ISSN No.:0885-8993
Translation or Not:no
Date of Publication:2018-11-01
Co-author:Wang, Chuyang,Jiang, Huijie,Cai, Tingting
Correspondence Author:Xiao Lan
Date of Publication:2018-11-01