Abstract
A two-input boost converter with voltage multiplier cell is proposed in this paper. Then a family of two-input converters with and without voltage multiplier cell are derived and their results are compared to achieve high voltage gain, low duty cycle, and reduced voltage stress. From the analysis of different topologies, a modified two-input converter with two-stage voltage multiplier cell has good operating characteristics. The switch voltage stress and duty cycle of the modified converter is significantly very less than that of the other converter topologies. The modified DC-DC converter with 50% duty cycle achieves a voltage gain of 10 and the results are verified by using MATLAB/Simulink software.
Highlights
Boost converter with high gain finds applications in various renewable energy sources such as solar energy systems, fuel cell systems and in electric vehicles
The inclusion of voltage multiplier in low frequency rectifiers is a classical solution to increase the DC output voltage. This technique is used in high-frequency isolated DC-DC converters, mainly for high output voltage applications as in Travelling Wave Tube Amplifiers (TWTA), reducing the problems presented by high-frequency and high-voltage power transformer [4]
The simulation of the converters with & without voltage multiplier cell is done by using the MATLAB/Simulink tool and the results are analyzed
Summary
Boost converter with high gain finds applications in various renewable energy sources such as solar energy systems, fuel cell systems and in electric vehicles. (2016) Proposal of High Gain, Reduced Stress with Low-Duty-Cycle Two-Input Boost Converter for Renewable Energy Systems. Some non-isolated DC-DC converters such as boost can provide increased voltage gain but the voltage, current stress and duty cycle are high [1]-[3]. The inclusion of voltage multiplier in low frequency rectifiers is a classical solution to increase the DC output voltage This technique is used in high-frequency isolated DC-DC converters, mainly for high output voltage (kV) applications as in Travelling Wave Tube Amplifiers (TWTA), reducing the problems presented by high-frequency and high-voltage power transformer [4]. The large duty cycle induces high-current ripples, which in turn increase the conduction losses and induce reverse-recovery problem which in turn reduce the efficiency and limit the power level [10].
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