Class-D zero-current-switching rectifier as power-factor corrector for lighting applications
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Publication Details
Author list: Ekkaravarodome C., Chunkag V., 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: 9
Start page: 4938
End page: 4948
Number of pages: 11
ISSN: 0885-8993
eISSN: 1941-0107
Languages: English-Great Britain (EN-GB)
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Abstract
An analysis and design of a zero-current-switching (ZCS) Class-D current-source driven rectifier for the lighting applications is presented, which is one of the resonant rectifiers as a power-factor corrector to improve a poor power-factor and high line current harmonic of a single-stage converter. A high power-factor is achieved by the utilization of output characteristics of a Class-D ZCS rectifier, which is inserted between the front-end bridge rectifier and the bulk-filter capacitor. The conduction angle of the bridge rectifier diode current was increased and a low-line current harmonic and a power-factor near unity can be obtained. The design procedure is based on the principle of the Class-D ZCS rectifier, which also ensures more accurate results and the proposed scheme provides a high efficiency and a more systematic and feasible analysis methodology. The active switches can be operated under the soft-switching condition. The validity of this approach was confirmed by simulation and experimental results. ฉ 2013 IEEE.
Keywords
Class-D ZCS rectifier, lighting applications, line harmonics, single-stage ballast
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