DocumentCode :
1179478
Title :
Frequency and time domain analysis of unit connected generators to HVDC converters
Author :
Daldegan, J. ; Pedroso, A.S. ; Watanabe, E.H.
Author_Institution :
ELETRONORTE, Brasilia, Brazil
Volume :
150
Issue :
1
fYear :
2003
Firstpage :
1
Lastpage :
6
Abstract :
The steady-state performance of the ´direct connection´ of a synchronous generator to an HVDC converter, without AC filters or AC bus bar, is analysed. This system is also referred to as a unit connection´ (UC). Despite the existence of subtransient saliency, the distorted terminal voltage of the machine and its harmonic components could be fully determined by simple analytical expressions. The harmonic components and the operation limits of the converter are also derived. The rectified voltage in UC systems has been shown to be essentially as in conventional HVDC converters. Some time domain simulation results of the unit connected system voltages waveforms are presented to confirm the validity of the analytical model obtained. Also, it is shown that it is possible to determine the actual firing delay angle of the converter and the limits of the minimum firing angle due to the UC operation. The analysis presented is highly useful in assessing the machine terminal voltage waveform and its harmonics.
Keywords :
HVDC power convertors; frequency-domain analysis; harmonic distortion; machine theory; power conversion harmonics; synchronous generators; time-domain analysis; HVDC converters; direct connection; distorted terminal voltage; firing delay angle; frequency domain analysis; harmonic components; subtransient saliency; synchronous generator; time domain analysis; unit connected generators;
fLanguage :
English
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings
Publisher :
iet
ISSN :
1350-2360
Type :
jour
DOI :
10.1049/ip-gtd:20020727
Filename :
1193663
Link To Document :
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