optimization of PV systems

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An Iterative Method for Calculating the Optimum Size of Inverter in PV Systems for Malaysia

Journal Title, Volume, Page: 
PRZEGLĄD ELEKTROTECHNICZNY (Electrical Review), ISSN 0033-2097, R. 88 NR 4a/2012
Year of Publication: 
2012
Authors: 
Tamer Khatib
Universiti Kebangsaan Malaysia
Azah Mohamed
Universiti Kebangsaan Malaysia
K. Sopian
Universiti Kebangsaan Malaysia
Marwan Mahmoud
Department of Electrical Engineering, Engineering Faculty, An Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Electrical Engineering, Engineering Faculty, An Najah National University, Nablus, Palestine
Preferred Abstract (Original): 
This paper presents an iterative method for optimizing inverter size in photovoltaic (PV) system for five sites in Malaysia. The sizing ratio which is the ratio of PV rated power to inverter’s rated power is optimized at different load levels using different commercial inverters models. Hourly solar radiation and ambient temperature records are used to develop a Matlab model for a PV array and inverter. The model aims to estimate the inverter’s efficiency in terms of PV array output power and inverter rated power. The results showed that the optimum sizing ratios for Kuala Lumpur, Johor Bharu, Ipoh, Kuching and Alor Setar are 1.21, 1.43, 1.31, 1.37 and 1.26, respectively.
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