DocumentCode :
3258810
Title :
New topology for harmonic-free, dynamic VAr compensator using unidirectional power switches
Author :
Dixon, Juan ; Maffrand, Carlos ; Morán, Luis
Author_Institution :
Univ. Catolica de Chile, Santiago, Chile
Volume :
1
fYear :
1998
fDate :
17-22 May 1998
Firstpage :
835
Abstract :
This paper presents a new and simple topology for reactive power compensators. It is based on a branch of binary scaled capacitors, and a special and simple switching device, implemented with one thyristor, and one antiparallel diode. During the off state, the capacitors remain charged at the peak voltage. When connected, they are switched on when the line voltage reaches its peak value. The main characteristics of this new topology are: (1) it does not generate harmonics; (2) it is simpler and less expensive compared with other topologies using electronic VAr compensators; (3) it can compensate reactive power cycle by cycle; (4) it does not require force commutated switches; and (5) inrush problems during connection and/or disconnection are avoided, allowing a dynamic compensation of reactive power. The paper analyzes the circuit proposed, the way it works and the results obtained under operation
Keywords :
power semiconductor diodes; power semiconductor switches; reactive power; static VAr compensators; thyristor applications; antiparallel diode; binary scaled capacitors; cycle by cycle reactive power compensation; harmonic-free dynamic VAr compensator; off state; reactive power compensators; switching device; thyristor; unidirectional power switches; Capacitors; Character generation; Circuit topology; Diodes; Power generation; Power system harmonics; Reactive power; Switches; Thyristors; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
ISSN :
0275-9306
Print_ISBN :
0-7803-4489-8
Type :
conf
DOI :
10.1109/PESC.1998.701996
Filename :
701996
Link To Document :
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