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

Content Provider	IEEE Xplore Digital Library
Author	Kondala Rao, G. Chatterjee, K.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Indian Inst. of Technol., Mumbai, India (Kondala Rao, G.; Chatterjee, K.)
Abstract	The basic current source charge pump power factor correction electronic ballast as proposed in [J. Qian et al., July 1998] has the problem of high lamp current crest factor. Switching frequency modulation has been proposed [J. Qian et al., July 1998] to improve lamp current crest factor. But, the requirement of wide variation of switching frequency makes the design of the ballast complicated. Moreover, in this case the 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 the lamp current crest factor without modulation 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 viability of the proposed scheme is conformed through experimental studies.
Sponsorship	Ind. Electron. Soc. IEEE COPPE-Federal Univ. of Rio de Janeiro
Starting Page	495
Ending Page	499
File Size	414468
Page Count	5
File Format	PDF
ISBN	0780379128
DOI	10.1109/ISIE.2003.1267300
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-06-09
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Charge pumps Electronic ballasts Reactive power Lamps Switching frequency Frequency modulation Power factor correction Hardware Resonance Inductors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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