“…INTRODUCTION 1 Nowadays, due to the increasing need for energy in countries and the shortage of fossil fuels, as well as the problems they create, such as greenhouse gas emissions [1], the use of renewable energy sources has become very important [2]. Governments also encourage people to use renewable energy sources [3]. Also, due to the importance *Corresponding Author Email: rshafaghat@nit.ac.ir (R. Shafaghat) of this issue, in some cases, renewable energy converters are used in combination [4].…”