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A Boost Converter for Low Voltage Applications through Bridgeless Circuit

Abstract

A single-stage ac–dc power electronic converter is proposed to efficiently manage the energy harvested from electromagnetic generators.The conventional ac-dc converters for energy harvesting system with diode rectifiers suffers considerable voltage drop results increase in power loss of circuitry and complexity. The proposed topology combines a boost converter and a buck-boost converter to condition the positive and negative half portions of the input ac voltage, respectively. The proposed converter avoids the use of bridge rectifiers, and converts the ac input to the required dc output. Only one inductor and capacitor are used in both circuitries to reduce the size of the converter. In this paper electrical and physical characteristics of the power conditioning interfaces determine the functionality, efficiency, and size of the integrated systems. The simulation is done with the help of MATLAB software using Simulink.

R.Tharani , S.R.Karthikeyan, C.SenthamilArasi

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