Thermal behavior of a high power generator exciter bridge measured by optical fiber sensors

Werner K. Probst; Fernando Bortolotti; Kleiton de Morais Sousa; Hypolito José Kalinowski; Cicero Martelli; Jean Carlos Cardozo da Silva

doi:10.1117/12.2026006

20 May 2013 Thermal behavior of a high power generator exciter bridge measured by optical fiber sensors

Werner K. Probst, Fernando Bortolotti, Kleiton de Morais Sousa, Hypolito José Kalinowski, Cicero Martelli, Jean Carlos Cardozo da Silva

Author Affiliations +

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 879443 (2013) https://doi.org/10.1117/12.2026006
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

This paper presents temperature measurements taken at a 3-phase thyristor rectifier bridge in a synchronous generator using fiber Bragg grating (FBG) sensors applied directly on the thyristors upper surface. The results show the thermal behavior of the thyristors during the generator’s start-up-phase and the period of time after the synchronization, with regulating operations as reaction to different load conditions. The temperature analysis is supported by current, voltage and power values of the hydroelectric power plant monitoring system. The trend of curves describes the typical behavior of thyristors which is proven with a four term transient thermal model. The different heat effect a thyristor experiences inside the switching-cabinet are also discussed.

Citation Download Citation

Werner K. Probst, Fernando Bortolotti, Kleiton de Morais Sousa, Hypolito José Kalinowski, Cicero Martelli, and Jean Carlos Cardozo da Silva "Thermal behavior of a high power generator exciter bridge measured by optical fiber sensors", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879443 (20 May 2013); https://doi.org/10.1117/12.2026006

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