An AC-DC LED Integrated Streetlight Driver with Power Factor Correction and Soft-Switching Functions

Chun-An Cheng, Hung-Liang Cheng, Chien-Hsuan Chang, En-Chih Chang (), Zheng-You Kuo, Cheng-Kuan Lin and Sheng-Hong Hou
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Chun-An Cheng: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Hung-Liang Cheng: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Chien-Hsuan Chang: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
En-Chih Chang: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Zheng-You Kuo: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Cheng-Kuan Lin: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Sheng-Hong Hou: Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan

Sustainability, 2023, vol. 15, issue 13, 1-19

Abstract: The use of light-emitting diodes (LEDs) in street lighting applications has been greatly welcomed with the current trends of energy saving, environmental protection, carbon reduction, and sustainable development. This paper presents a novel AC-DC LED integrated streetlight driver that combines an interleaved buck converter with a coupled inductor and a half-bridge series resonant converter with a full-bridge rectifier into a single-stage power conversion topology with power factor correction (PFC) and soft switching capabilities. The PFC is achieved by designing the coupling inductor in the interleaved buck converter sub-circuit in discontinuous conduction mode. In addition, the resonant tank in the half-bridge series resonant converter sub-circuit is designed to be similar to an inductive load, thus giving the power switch a zero-voltage switching (ZVS) function, decreasing switching losses and increasing the overall efficiency of the proposed circuit. A prototype circuit of the proposed LED integrated streetlight driver with a power rating of 165 W (235 V/0.7 A) and 110 V input utility voltage has been developed and tested. According to the measurement results, a power factor greater than 0.98, a total harmonic distortion coefficient of the input current less than 3%, and an efficiency greater than 89% were obtained in the AC-DC LED integrated streetlight driver. Therefore, the experimental results are satisfactory and demonstrate the functionality of the proposed AC-DC LED integrated streetlight driver.

Keywords: converter; light-emitting diode (LED); power factor correction (PFC); soft switching; streetlight (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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