• parimi venkatarao
• m v sudarsan

Among various kinds of soft-switching converters, asymmetric PWM half-bridge converters have drawn attention due to their simplicity, inherent zero voltage switching (ZVS) capability, and fixed-frequency operation. This paper presents an analysis and reviews practical design considerations for an asymmetric half-bridge converter. It includes designing the transformer and selecting components. A step-by-step design procedure with a design example will help engineers design an asymmetric half-bridge converter. To provide condition of ZVS for switches in this model, we use a simple auxiliary circuit included one inductor coil coupled to the main coil and auxiliary coil. Because of the operation of ZVS switches, the diode reverse recovery problem does not occur. In addition, to provide a soft switching in this circuit, any additional switches are not used. Therefore, circuit becomes easier to implement and control. This work deals with design, modeling and simulation of the PI & Fuzzy controlled Asymmetrical Half-Bridge Fly back DC to DC converter systems. Open loop system is simulated with step change in input voltage. The output voltage in closed loop system is regulated using PI and Fuzzy controllers. The response of these two systems are compared. This converter has advantages like low EMI, less switching loss and improved dynamic response. The simulation results of PI & FLC Asymmetrical Half-Bridge Fly back DC to DC converter systems are presented in this paper. In order to confirm the theory analysis of Asymmetrical Half-Bridge Fly back dc-dc converter offered and simulation is done by Matlab/Simulink

hybrid-switching technique; asymmetrical half bridge flyback converter; universal input voltage range

"Closed control of Asymmetrical Half-Bridge Fly back DC-DC Converter with PI and fuzzy Controller ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 6, page no.192-199, June-2017, Available :http://www.jetir.org/papers/JETIR1706043.pdf

"Closed control of Asymmetrical Half-Bridge Fly back DC-DC Converter with PI and fuzzy Controller ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 6, page no. pp192-199, June-2017, Available at : http://www.jetir.org/papers/JETIR1706043.pdf