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Implementation of FPGA based three-level converter for LED drive applications

J. GNANAVADIVEL1,* , N. SENTHIL KUMAR1, P. YOGALAKSHMI1

Affiliation

  1. Electrical and Electronics Engineering Department, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, India

Abstract

A fuzzy-tuned PI voltage controller and a hysteresis current controller operating a single-phase AC-DC three-level converter is proposed for improving power quality at AC mains for LED drive applications. A prototype of 100 W, 48 V LED driver is considered for the testing of controller performance. Performance parameters such as input power factor and input current total harmonic distortion (THD) are considered. Three-level LED driver with voltage and current controller combinations such as PI-Hysteresis, Fuzzy-Hysteresis and Fuzzy tuned PI-Hysteresis are carried out in MATLAB platform. The proposed combination with the three-level LED driver provides a better result, with a source-current THD of 1.24% and a unity power factor without any source side filter. Finally, the proposed controller combination is implemented in a Xilinx Spartan-6 XC6SLX25 FPGA board for experimental validation of power quality improvement in proposed LED drive..

Keywords

Fuzzy-Tuned PI voltage controller, Hysteresis Current Controller, Input Power Factor, Total Harmonic Distortion (THD), Three-Level LED drive.

Submitted at: Dec. 23, 2015
Accepted at: June 9, 2016

Citation

J. GNANAVADIVEL, N. SENTHIL KUMAR, P. YOGALAKSHMI, Implementation of FPGA based three-level converter for LED drive applications, Journal of Optoelectronics and Advanced Materials Vol. 18, Iss. 5-6, pp. 459-467 (2016)