Performance of fuzzy controlled Zeta converter connected single stage dimmable electronic ballasts for electrode less fluorescent lamp applications

Abstract

In this paper a modified Zeta converter is proposed with replacement of conventional PI controller with fuzzy control for robust and reduced output stabilization time. The Zeta converter is one of the best PFC converters with very less DC voltage output ripple. The input is fed with a single phase AC source with maintained power factor at unity during the conversion process. The performance and analysis of electronic ballast for electrode less fluorescent lamp is observed with dynamic characteristics of the elements in the converter. Lamp voltage and currents are controlled and observed with change in the switching frequency. THD FFT analysis is carried out on voltage current and also lamp voltage and current. The efficiency of the lamp is calculated with change in switching frequency. Complete design and analysis is carried out in MATLAB Simulink software with all graphical representation and plots of dynamic characteristics of the converter.