DESIGN AND IMPLEMENTATION OF PHOTO VOLTAIC EMULATOR

Abstract

In the proposed work emulator of photovoltaic system have been developed. The main purpose of developing solar emulator is generate the profile of solar PV system from laboratory based experimental studies. The mathematical model of solar photovoltaic system is developed and simulated using the MATLAB. Here, the main aim is to generate VI Characteristics of PV system at different irradiation and temperature level. The actual data from NREL have been taken as reference to generate PV Characteristics from Real time irradiance level using lookup table. In this work, only One Diode equivalent model has been considered. The series or shunt connection of this system diode model is further used to immolate a solar array. The Newton Raphson Method has been used to calculate the output current of solar cell while taking temperature and irradiation level as input variable and voltage as output. Further a PIC 18F4520 microcontroller with flash memory of 32 kB is used to handle large data where the code written in C language is burned inside microcontroller to emulate to proposed PV system.