Open AccessSimple I-V acquisition module with high side current sensing principle for real time photovoltaic measurement
Author(s) -
Eri Wiyadi,
Agustina Wati,
Yanuar Hamzah,
Lazuardi Umar
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1528/1/012040
Subject(s) - microcontroller , photovoltaic system , voltage , current sensor , resistor , calibration , linearity , software , multimeter , electrical engineering , computer science , current (fluid) , measure (data warehouse) , electronic engineering , data acquisition , interface (matter) , engineering , physics , quantum mechanics , database , programming language , operating system , bubble , maximum bubble pressure method , parallel computing
This work presents a data acquisiti on module for measurement of current voltage (I-V) characteristic of photovoltaic module based on INA219 sensor Adafruit integrated with the Atmega328 Microcontroller. The module can be used to measure the photovoltaic DC current precisely, which is controlled using a developed software interface as a data logger display. The sensor works based on the principle of high side currents sensing consists of sense and load resistor to accommodate four sensors of 3 Amps in the maximum voltage range up to 26V. The measurement result in real-time is depicted in graphical form using visual studio software. Calibration and linearity tests result an error of of 0.76% and 0.572% for currents and voltages respectively. The result of linearity test shows a value of R = 0.98 for current and voltage of PV module compare to the calibrator.