Implementation of a DC-Side Class-DE Low-dv/dt Rectifier as a PFC for electronic ballast application
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Publication Details
Author list: Ekkaravarodome C., Jirasereeamornkul K., Kazimierczuk M.K.
Publisher: Institute of Electrical and Electronics Engineers
Publication year: 2014
Journal: IEEE Transactions on Power Electronics (0885-8993)
Volume number: 29
Issue number: 10
Start page: 5486
End page: 5497
Number of pages: 12
ISSN: 0885-8993
eISSN: 1941-0107
Languages: English-Great Britain (EN-GB)
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Abstract
An analysis and design of a single-stage electronic ballast with a dc-side Class-DE low- dv\/dt resonant rectifier is studied in this paper to improve a poor power-factor and low line harmonic. The power-factor correction is achieved by utilize an output characteristics of a Class-DE rectifier, which is inserted between the front-end bridge rectifier and the bulk-filter capacitor. The design procedure is based on the principle of the Class-DE rectifier, which also ensures more accurate results and the proposed scheme provided a more systematic and feasible analysis methodology. The active switches can be operated under the soft-switching condition. By employing an electromagnetic interference filter after bridge rectifier, the standard-recovery diode for bridge rectifier can be employed, the cost can be reduced, the conduction angle of the bridge-rectifier diode current was increased, and low line harmonic distortion and a power factor near unity were achieved. The dc-side Class-DE rectifier is driven by a high-frequency current source, which is obtained from the square-wave output voltage of the Class-D series-parallel resonant inverter through an LC-series circuit. A prototype of the ballast, operating at an 84-kHz fixed frequency and a 220-V\rm rms, 50-Hz line voltage, was utilized to drive a T8-36 W fluorescent lamp. The validity of this approach was confirmed by simulation and experimental results. ฉ 1986-2012 IEEE.
Keywords
Class-D series-parallel resonant inverter, dc-side Class-DE resonant rectifier
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