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Technical Brief

A Comprehensive Modeling of Grid-connected Photovoltaic Systems Using Multi-phase DC/DC Converter Based on Reliability Concepts

[+] Author and Article Information
Marzieh Piri

University of Isfahan, Department of Electrical Engineering, Isfahan, Iran
piri.marzieh@eng.ui.ac.ir

Mehdi Niroomand

University of Isfahan, Department of Electrical Engineering, Isfahan, Iran
mehdi_niroomand@eng.ui.ac.ir

Rahmat-Allah Hooshmand Hooshmand

University of Isfahan, Department of Electrical Engineering, Isfahan, Iran
hooshmand_r@eng.ui.ac.ir

1Corresponding author.

ASME doi:10.1115/1.4037377 History: Received May 20, 2016; Revised June 02, 2017

Abstract

This paper proposes a new method based on Markov model to calculate the reliability of grid-connected PV systems. This system is a grid-connected PV system consisting of PV modules, a multiphase DC-DC converter, an inverter, an inverter controller, and an MPPT controller at University of Isfahan. This system is considered repairable. Also, different levels of operation are considered for the system equipment. Reliability of the PV modules, the multiphase DC-DC converter and the inverter have been calculated by the Markov model. Finally, the reliability of the entire PV system is calculated by the Markov model. The Proposed algorithm is applied to the PV system positioned at University of Isfahan. Simulation results show the applicability of this method for calculating the reliability of grid-connected PV systems.

Copyright (c) 2017 by ASME
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