IMPLEMENTASI MPPT (Maximum Power Point Tracker) DC-DC CONVERTER PADA SISTEM PHOTOVOLTAIC DENGAN MENGGUNAKAN ALGORITMA TEGANGAN KONSTAN, PERTURB AND OBSERVE (P&O) DAN INCREMENTAL CONDUCTANCE

Abstract

Solar energy is one of most important renewable energy source. The solar cell V-I characteristic is non linear and varies with irradiation and temperature and there is a unique point on the V-I or V-P curve with Vmpp and Impp coordinate, called the Maximum Power Point (MPP) at which the PV system operates with maximum efficiency and produce its maximum power output. MPP depend on the irradiation level of sunlight and the module temperature where they changes continuously with weather condition. Maximum Power Point Tracker (MPPT) techniques are needed to search the maximum power output and to maintain the PV array�s operating point at its MPP This research will build a device to optimize MPP on PV system which implementing MPPT algorithm, they are Constant Voltage, Perturb and Observe (P&O) and Incremental Conductance. Third of the algorithm will be compared to get the maximum conversion efficiency of electrical power generation. Boost converter and microcontroller ATMEGA 32 are used to control the voltage and current PV array in order to get the maximum power output. Experiment result in the laboratory using lamp 24V/16W and battery 24V/2.5Ah as load and using Constant voltage, P&O and Incremental Conductance confirm that conversion efficiency of electrical power output are 43.523%, 39.741% and 44.717%. whereas experiment result in the real condition show that conversion efficiency of electrical power output are 32.263%, 33.351% and 38.568%. Incremental Conductance algorithm has higher conversion efficiency than another algorithm