Informatics Publishing Limited

Emilin Thomas Kangappadan ¹, Della David ¹

Affiliations
1 Department of Electrical and Electronics, Jyothi Engineering College, Cheruthuruthy, Thrissur, Kerala, IN

Abstract

In the conventional buck converter the voltage stress experienced by the semiconductor switches is equal to the supply voltage. Thus, the ratings of the semiconductor devices used will also be high. As the ratings increase, the cost of the components also increases. This paper proposes an interleaved buck topology with reduced voltage stress. The converter also has the advantage of improved step-down conversion ratio; thus it can be used for high step-down applications. The main features of the converter also include continuous input current and lower output current ripple. The proposed interleaved topology consists of two capacitors at the input section which helps in reducing the voltage stress across the semiconductor devices. One-Cycle Control (OCC) is used to provide the triggering pulses for the MOSFET switches. The simulation has been carried out using MATLAB software in order to evaluate the overall performance of the converter. The simulation has been carried out at a power level of 19 W.

Keywords

Buck Converter, Interleaved Structure, Improved Step-Down Conversion Ratio, One-Cycle Control.

Full Text

     

Josie Baby ¹, Della David ¹

Affiliations
1 Department of Electrical and Electronics, Jyothi Engineering College, Cheruthuruthy, Thrissur, IN

Abstract

For sustainable energy applications this paper proposes a dc/dc converter with switched capacitor and coupled inductor cells. It includes coupled inductor and voltage multiplier cell. Switched capacitor charged during off period by using the energy stored in the coupled inductor. This will increase the performance of the converter. The operation principle and steady state analyses are discussed thoroughly. Simulation is done with 24V input voltage, 300W output power and 120V output voltage using MATLAB.

Keywords

Boost Converter, Coupled Inductor, Dc/Dc Converter, PWM Control Scheme, Switched Capacitor.

Full Text