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Diyoke, G. C.
Department of Electrical and Electronic Engineering, College of Engineering and Engineering Technology, Michael Okpara University of Agriculture, Umudike, Nigeria.
Awah, C. C.
Department of Electrical and Electronic Engineering, College of Engineering and Engineering Technology, Michael Okpara University of Agriculture, Umudike, Nigeria.
Eya, C. U.
Department of Electrical Engineering, Faculty of Engineering, University of Nigeria, Nsukka, Nigeria.
Onah, A. J.
Department of Electrical and Electronic Engineering, College of Engineering and Engineering Technology, Michael Okpara University of Agriculture, Umudike, Nigeria.
ABSTRACT
In this study, a mathematical modeling and analysis of
high voltage gain pulse-width modulation boost converter with variable load
application is proposed. The proposed converter has the capability of using two
power switches to generate two outputs voltages with common ground, under
balanced and unbalanced resistive load conditions. A pulse width modulation
technique is adopted for the voltage control. A high frequency carrier signal
is compared with two reference dc signal. The number of DC output voltage ports
of the proposed converter can be increased by using more inductors, capacitors
and power switches. In this research work, the analytical results based on
variable load resistances of the proposed converter are obtained. The output
voltage, input and inductors’ current waveforms are obtained under different
loading conditions at constant duty ratios. The voltage drop across the
individual load resistors gives the total output voltage with high voltage
gain. Finally, the analytical results are reconfirmed by the
MATLAB/Simulink/Power Systems’ results of 25 V supply with a dual 46 V output
ports. Total output voltage of 92 V is also obtained. These results validate
both methods. From bode plots, magnitude value of 50.2 dB at phase value of
-90.7o with frequency value of 1400 rad/s are obtained when the load resistance
R1 is less than R2, which showed a better performance when compared with other
conditions.
Keywords: Boost converter, High voltage gain, Mathematical analysis, Pulse-width modulation.
https://doi.org/10.33922/j.ujet_v9i2_7
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Published
Monday, November 06, 2023
Issue
Vol.9 No.2, December 2023
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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