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J. GNANAVADIVEL1,* , N. SENTHIL KUMAR1, S. T. JAYA CHRISTA1
A diode bridge rectifier with two switches is considered in this paper to convert AC power to three level DC power. The objective of this paper is to design closed loop controllers for AC-DC three level boost converter to achieve unity power factor, reduce source current total harmonic distortion (THD) and regulate output voltage. Hysteresis controller is designed for inner current controller whereas, a PI controller and a fuzzy logic controller are designed for outer voltage controller. The controllers are implemented in Xilinx Spartan-6 XC6SLX25 FPGA board. From hardware and simulation results, proposed fuzzy logic voltage controller with Hysteresis current controller performs well compared to PI voltage controller with Hysteresis current control. The proposed fuzzy logic control is able to achieve high power factor close to unity, source current THD of 3.391% and 91.3% efficiency at rated power..
FLC, HCC, PI, Power Factor, Total harmonic distortion, Three-level converter.
J. GNANAVADIVEL, N. SENTHIL KUMAR, S. T. JAYA CHRISTA, Implementation of FPGA based fuzzy and hysteresis controllers for power quality improvement in single phase three-level rectifier, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1264-1272 (2015).
Submitted at: July 11, 2015
Accepted at: Sept. 9, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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