Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Enhancement of a High Speed De­Excitation System for Brushless Synchronous Machines by large blocking voltage semiconductors
Year:2015
Research Areas
  • Electric engineers, electronic and automatic (eil)
Information
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.
International
No
Congress
Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2015 IEEE 10th International Symposium
960
Place
Reviewers
Si
ISBN/ISSN
978-1-4799-7743-7
10.1109/DEMPED.2015.7303668
Start Date
01/09/2015
End Date
04/09/2015
From page
50
To page
55
Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2015 IEEE 10th International Symposium on
Participants
  • Autor: Carlos Antonio Platero Gaona (UPM)
  • Autor: Francisco Blazquez Garcia (UPM)
  • Autor: Emilio David Rebollo Lopez (UPM)
  • Autor: Francisco Blánquez Delgado (UPM)
  • Autor: Jose A. Martinez (UPM)
  • Autor: Marta Redondo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Generación eléctrica con energía eólica
  • Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
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