DocumentCode
274057
Title
Development of high power GTO inverter drives for low signalling interference currents
Author
Brooks, D.M. ; Taufiq, J.A.
Author_Institution
GEC Traction Ltd., Manchester, UK
fYear
1989
fDate
25-28 Set 1989
Firstpage
77
Lastpage
81
Abstract
In industrial AC drives the main emphasis is on minimising the total harmonic distortion due to the harmonic currents in the motor so as to achieve an improved motor performance. It is the relatively unsophisticated power frequency (33-125 Hz) and the reed relay type of track circuits (typically 360-425 Hz) which cause the most concern. Apart from the higher amplitude of the low frequency harmonics generated by the equipment and the lower attenuation of the inverter input filter, these track circuits are usually not securely coded and therefore, pass band invasion represents a potential hazard rather than a `fail-safe´ situation
Keywords
electric drives; harmonics; invertors; railways; signalling; thyristor applications; 33 to 125 Hz; 360 to 425 Hz; AC drives; GTO inverter drives; harmonic distortion; low signalling interference currents; pass band invasion; power frequency track circuits; railways; reed relay type track circuits;
fLanguage
English
Publisher
iet
Conference_Titel
Main Line Railway Electrification, 1989., International Conference on
Conference_Location
York
Type
conf
Filename
51847
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