"Input characteristics of a diode-bridge supplied chopper controller for AC traction applications", 1977.
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Article : [ART402]

Info : REPONSE 75, le 06/04/2003.

Titre : Input characteristics of a diode-bridge supplied chopper controller for AC traction applications, 1977.

Cité dans : [DIV393]  Recherche sur les SINGLE PHASE AC CHOPPER, mars 2003.
Auteur : Mellitt, B.
Auteur : Mwandosya, M.J. (Dept. of Electronic & Electrical Engng., Univ. of Birmingham, Birmingham, UK)

Source : 2nd International Conference on Power Electronics-Power Semiconductors and their Applications
London, UK: IEE, 1977. p.109-12 of viii+187 pp. 0 refs.
Conference: London, UK, 27-29 Sept 1977
Document_Type : Conference Article
Treatment_Code : Application; Practical
Info : Country of Publication : United Kingdom
Language : English
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Abstract :
Naturally-commutated thyristor convertors are gradually being introduced to provide voltage control on single-phase supplied
traction vehicles. While such equipment has improved the control facilities of the traction drive, it has also introduced peripheral
problems associated with low power-factor and harmonic interference in signalling and telecommunication circuits. In order to
minimise these effects multi-bridge sequencing, from a tapped power transformer, and fixed power-factor-correction capacitors are
commonly used. An alternative solution which involves the forced-commutation of the single phase thyristor bridge has recently
been proposed. With this arrangement the circuit effectively acts as an a.c.-side 100 Hz chopper. The general feasibility of this
scheme has been demonstrated in practice on car ET 420 of the German railways.

Accession_Number : 1977:1121211 INSPEC

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