A Single-Stage LED Driver Based on ZCDS Class-E Current-Driven Rectifier as a PFC for Street-Lighting Applications

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Author list: Mangkalajan S., Ekkaravarodome C., Jirasereeamornkul K., Thounthong P., Higuchi K., Kazimierczuk M.K.

Publisher: Institute of Electrical and Electronics Engineers

Publication year: 2018

Journal: IEEE Transactions on Power Electronics (0885-8993)

Volume number: 33

Issue number: 10

Start page: 8710

End page: 8727

Number of pages: 18

ISSN: 0885-8993

eISSN: 1941-0107

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038378750&doi=10.1109%2fTPEL.2017.2780088&partnerID=40&md5=4ea1f9e8b1bfcc2ff5e6bdeef3ec3e3f

Languages: English-Great Britain (EN-GB)

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Abstract

This paper presents a light-emitting diode (LED) driver for street-lighting applications that uses a resonant rectifier as a power-factor corrector (PFC). The PFC semistage is based on a zero-current and zero-derivative-switching (ZCDS) Class-E current-driven rectifier, and the LED driver semistage is based on a zero-voltage-switching (ZVS) Class-D LLC resonant converter that is integrated into a single-stage topology. To increase the conduction angle of the bridge-rectifier diodes current and to decrease the current harmonics that are injected in the utility line, the ZCDS Class-E rectifier is placed between the bridge-rectifier and a dc-link capacitor. The ZCDS Class-E rectifier is driven by a high-frequency current source, which is obtained from a square-wave output voltage of the ZVS Class-D LLC resonant converter using a matching network. Additionally, the proposed converter has a soft-switching characteristic that reduces switching losses and switching noise. A prototype for a 150-W LED street light has been developed and tested to evaluate the performance of the proposed approach. The proposed LED driver had a high efficiency (>91%), a high PF (>0.99), and a low total harmonic distortion (THDi < 8%) under variation of the utility-line input voltage from 180 to 250 Vrms. These experimental results demonstrate the feasibility of the proposed LED scheme. ฉ 2017 IEEE.

Keywords

Class-E current-driven rectifier, light-emitting diode (LED) driver, soft-switching techniques, street-lighting system