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A new current source charge pump electronic ballast having high input power factor and low crest factor

DSpace at IIT Bombay

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Title A new current source charge pump electronic ballast having high input power factor and low crest factor
 
Creator RAO, GK
CHATTERJEE, K
 
Subject electronic ballast
current source
charge pump
lamp crest factor
switching frequency
 
Description The basic Current Source Charge Pump Power Factor Correction Electronic Ballast as proposed in [11] has the problem of high lamp current crest factor. Switching frequency modulation has been proposed [11] to improve lamp current crest factor. But the requirement of"ide variation of switching frequency, makes the design of the ballast complicated. Moreover. in this case lamp current has to be sensed which increases the hardware requirement and makes the control issue more involved. Here an attempt has been made to improve upon the lamp current crest factor without modulating the switching frequency. This is achieved by transferring the excess energy of the resonant inductor to the dc bus at the zero crossing instants of the input voltage by employing a high frequency transformer. As the transformer is required to operate at high frequency while having low volt-ampere rating, increment in passive element count is insignificant. The operating principle of the proposed scheme is presented and analysed. The working of the scheme is verified through extensive simulation studies. A laboratory prototype of the ballast is fabricated and the. p viability of the proposed scheme is conformed through experimental studits.
 
Publisher IEEE
 
Date 2011-10-26T19:46:05Z
2011-12-15T09:12:28Z
2011-10-26T19:46:05Z
2011-12-15T09:12:28Z
2003
 
Type Proceedings Paper
 
Identifier 2003 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS, VOLS 1 AND 2,495-499
0-7803-7912-8
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16108
http://hdl.handle.net/100/2690
 
Source IEEE International Symposium on Industrial Electronics,RIO DE JANEIRO, BRAZIL,JUN 09-11, 2003
 
Language English