alexa MATLAB Simulation of a High Step-Up DCDC Converter for a Micro Grid Application
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

MATLAB Simulation of a High Step-Up DCDC Converter for a Micro Grid Application

GadeVenkat Raghavendra Reddy1, A. Hari Prasad2, Dr.Goli Ravikumar 3
  1. Department of E.E.E, VasireddyVenkatadri Institute of Technology, Nambur, India
  2. Department of E.E.E, VasireddyVenkatadri Institute of Technology, Nambur, India
  3. Department of E.E.E, VasireddyVenkatadri Institute of Technology, Nambur, India
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Abstract

A high step-up dc–dc converter for a distributed generation system is proposed in this paper. The concept is composed of two capacitors, two diodes, and one coupled inductor. Two capacitors are charged in parallel, and are discharged in series by the coupled inductor. Thus, high step-up voltage gain can be achieved with an appropriate duty ratio. The voltage stresses on the main switch and output diode are reduced by a passive clamp circuit. Therefore, low resistance RDS (ON) for the main switch can be adopted to reduce conduction loss. In addition, the reverse recovery problem of the diode is alleviated. The operating principle and steady-state analysis of the voltage gain are also discussed in detail. Finally, a MATLAB/Simulink based model is developed with 24v input voltage to obtain 400v output voltage and 400w output power from the proposed converter is simulated in this project.

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