Table of Contents
Advances in Power Electronics
Volume 2011, Article ID 832737, 10 pages
http://dx.doi.org/10.1155/2011/832737
Research Article

The Influence of Controller Parameters on the Quality of the Train Converter Current

Dipartimento di Energia, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy

Received 15 November 2010; Revised 25 March 2011; Accepted 31 March 2011

Academic Editor: C. M. Liaw

Copyright © 2011 M. Brenna et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a stability analysis of train converters in order to evaluate how the controller parameters affect the absorbed current. The new dynamic model presented in this paper is capable of considering the time-variant nature of the system for the correct tuning of the feedback proportional-integral PI controller, applying a current controlled modulation technique never used in high-power traction converters. The reduction of the harmonic content of the current absorbed by a converter employed at the input stage onboard high-speed trains is really important, considering the interaction with the signaling system set up for traffic control. A computer model of the converter, considering both the power and the control structure, has also been implemented in order to deliver a validated tool for the developed theoretical analysis.