By Topic

Modeling and Control System Design of a Grid Connected VSC Considering the Effect of the Interface Transformer Type

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Mahmood, H. ; Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada ; Jin Jiang

In this paper, modeling and control system design of a three-phase VSC system are investigated. The linear model and the control design are developed in the stationary-frame. The model shows a highly coupled system along and coordinates when using a -Y transformer vs. two completely decoupled subsystems in the case of Y-Y transformer. This issue was often overlooked in literature. The developed model includes the phase shift caused by the -Y transformer to address its effect on the steady-state and the dynamic behaviors under balanced and unbalanced distorted three phase conditions. Linear state-space model of the closed-loop system is developed to study the dynamics and stability of the two configurations. Modal analysis shows that the phase shift introduced by the -Y configuration can reduce the ultimate gain of the open loop system by 62% as compared to the system interfaced using Y-Y configuration. The developed linear model has been simulated in MATLAB/SIMULINK and validated using a detailed switching model in PSCAD/EMTDC under balanced and unbalanced three-phase conditions. The proposed control method can provide fast active and reactive power control with a minimum harmonics distortion in the line current.

Published in:

Smart Grid, IEEE Transactions on  (Volume:3 ,  Issue: 1 )