The era of electronic devices in all loads due to the manufacturing technologies replaced many conventional electrical or mechanical loads including lighting loads where Light Emitting Diodes (LEDs) is becoming an emerging technique with many advantages. High frequency switching dc-dc converter is a new technology to control the load and the supply side simultaneously. Due to additional harmoni...

The connection between PEM fuel cells and common DC-DC converters is examined. The analysis is model-based and done for boost, buck and buck-boost converters. In a first step, the effect of the converter ripples upon the PEM fuel cell is shown. They introduce oscillations in the fuel cell. Their appearance is explained, discussed and possibilities for their suppression are given. After that, th...

Abstract: The Renewable energy source is large, due to the perceptive energy in the day today life. This paper present moment a novel high voltage gain boost converter topography based on three state commutation cell for battery charging using Photo Voltaic panel to reduce ripples in output and its shortened number of conversion stages. The proposed converter operates in zero voltage switching ...

Abstract.A novel single-stage high-power-factor electronic ballast obtained from the integration of a forward dc-to-dc converter and a half-bridge resonant inverter is evaluated in this paper. The Forward converter is operated in discontinuous conduction mode and constant frequency providing an input power factor high enough to satisfy present standard requirements. The operation of the propose...

Chaotic chattering behaviors of DC-DC converters are caused by the nonlinearity of the switching operation which is an essential characteristics of the power electronics circuits. In this paper the bifurcation and the appearance of the chaotic chattering in the discontinuous current conduction mode of a DC-DC buck converter are discussed experimentally. Moreover, a method for controlling chaoti...

In this work a buck converter model for multidomain simulations is proposed and compared with a stateof-the-art buck converter model. In the proposed model no switching events are calculated. By avoiding the computation of the switching events in power electronic models the processing time of multi-domain simulations can be decreased significantly. The proposed model calculates any operation po...

A switched implementation of average dynamic output feedback laws trough a Σ-∆-modulator, widely known in the classic communications and analog signal encoding literature, not only frees the sliding mode control approach from state measurements and the corresponding synthesis of sliding surfaces in the plant’s state space, but it also allows to effectively transfer all desired closed loop featu...

This paper presents an implementation of open loop and closed loop control of Quadratic boost converter using PID controller.  Quadratic boost converter consists of boost converter and fly back converter driven by a single switch. Quadratic boost converter QBC is designed especially for regulating the DC interface between various micro sources and dc-ac inverter to electricity grid. Quadratic b...

The energy efficiency of battery-operated portable applications can be improved by increasing the efficiency of power amplifiers (PAs). By dynamically changing the supply voltage from the fixed battery supply using a DC-DC converter, the PA can be operated with high efficiency during power back-off. This paper presents the system level requirements for a buck converter and other blocks in a dyn...

Power electronics as an application oriented discipline, has been employed in industrial, commercial, residential and aerospace environments. Since power electronic circuits containing pulse width modulation, are nonlinear systems, it exhibits complex behaviors such as bifurcation and chaos. In this paper, a simulation study of chaos in voltage controlled buck converter is done by varying the l...