Enhancement of a High Speed De-Excitation System for Brushless Synchronous Machines by large blocking voltage semiconductors

Platero Gaona, Carlos Antonio and Blázquez García, Francisco and Rebollo López, Emilio and Blánquez Delgado, Francisco and Martínez, José A. and Redondo, Marta (2015). Enhancement of a High Speed De-Excitation System for Brushless Synchronous Machines by large blocking voltage semiconductors. In: "Diagnostics for Electrical Machines, 2015 IEEE 10th International Symposium on Power Electronics and Drives (SDEMPED)", 1-4 Sept. 2015, Guarda, Portugal. ISBN 978-1-4799-7743-7. pp. 50-55.

Description

Title: Enhancement of a High Speed De-Excitation System for Brushless Synchronous Machines by large blocking voltage semiconductors
Author/s:
  • Platero Gaona, Carlos Antonio
  • Blázquez García, Francisco
  • Rebollo López, Emilio
  • Blánquez Delgado, Francisco
  • Martínez, José A.
  • Redondo, Marta
Item Type: Presentation at Congress or Conference (Article)
Event Title: Diagnostics for Electrical Machines, 2015 IEEE 10th International Symposium on Power Electronics and Drives (SDEMPED)
Event Dates: 1-4 Sept. 2015
Event Location: Guarda, Portugal
Title of Book: Diagnostics for Electrical Machines, 2015 IEEE 10th International Symposium on Power Electronics and Drives (SDEMPED)
Date: 2015
ISBN: 978-1-4799-7743-7
Subjects:
Freetext Keywords: Synchronous generator excitation; AC generator excitation; Brushless rotating machines; Synchronous machines
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

One of the main disadvantage of the synchronous machines with brushless excitation is that the field winding is not accessible for the de-excitation. The de-excitation process is very slow as the field current flows through the rotating diodes which operate in freewheel mode. Therefore in case of an internal fault, despite the correct operation of the protection relays, the machine could have severe damages. A high-speed de-excitation system for these machines was developed. The de-excitation is achieved by inserting a resistance in the field circuit by a static switch semiconductor based, obtaining a dynamic response similar to that achieved in machines with static excitation. This paper presents the improvement in the de-excitation system in the second commercial 20 MVA hydro generator in operation. In this case, high blocking voltage semiconductor was used, making the dynamic response even better, than in the first hydro generator.

More information

Item ID: 42558
DC Identifier: http://oa.upm.es/42558/
OAI Identifier: oai:oa.upm.es:42558
Official URL: http://ieeexplore.ieee.org/document/7303668/?arnumber=7303668&tag=1
Deposited by: Memoria Investigacion
Deposited on: 25 Aug 2016 10:42
Last Modified: 25 Aug 2016 10:42
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM