A novel single-stage LED driver for energy-saving streetlight applications with interleaved power-factorcorrection

作者：Cheng Chun An; Tseng Ching Hsien; Feng Ping Han; Tseng Kuo Ching^*

来源：International Journal of Green Energy, 2018, 15(5): 286-295.

DOI：10.1080/15435075.2016.1253574

• Converters
• driver
• light-emitting diode
• streetlight

This paper proposes a novel single-stage light-emitting diode (LED) driver with interleaved power-factor corrections (PFC) suitable for energy-saving streetlight applications. The presented circuit combines an interleaved boost PFC converter with a half-bridge-type series-resonant converter cascaded with a full-bridge rectifier into a single-stage power-conversion topology. Two inductors in the interleaved boost PFC converter sub-circuit are designed to operate in discontinuous-conduction mode (DCM) in order to achieve input-current shaping, and the half-bridge-type series-resonant converter cascaded with a full-bridge rectifier is designed to obtain zero-voltage switching (ZVS) on two power switches to reduce their switching losses. The proposed driver features high power factor, low total-harmonic distortion (THD) of input current, and high circuit efficiency, all of which results in energy savings. A prototype driver is developed and implemented to supply a 165W-rated LED streetlight module with utility-line input voltages ranging from 210V to 230V. In addition, satisfactory experimental results have demonstrated the feasibility of the proposed LED driver.

• 出版日期2018