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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Low-Cost Data Acquisition Systems for Photovoltaic System Monitoring and Usage Statistics
Author(s)
Sofia Fanourakis 1, Kevin Wang 2, Patrick McCarthy 1 and Lihong (Heidi) Jiao1
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DOI:10.17265/1934-8975/2017.11.005
Affiliation(s)
1. School of Engineering, Grand Valley State University, Grand Rapids, MI 49504, USA
2. Forest Hills Central High School, Grand Rapids, MI 49546, USA
ABSTRACT
This paper presents the
design of a low-cost DAS (data acquisition system) for monitoring a PV
(photovoltaic) system’s electrical quantities, battery temperatures,
and state of charge of the battery. The electrical quantities are the voltages
and currents of the solar panels, the battery, and the system
loads. The system uses an Atmega328p microcontroller to acquire data from the PV
system’s charge controller. It also records individual load information using
current sensing resistors along with a voltage amplification circuit and an
analog to digital converter. The system is used in conjunction with a wall
power DAS for the recording of regional power outages. Both DASs record data in
microSD cards. The data have been successfully acquired from both systems and have been used to monitor the status of the PV system and
the local power grid. As more data are gathered, it can
be used for the maintenance and improvement of the PV system through analysis
of the PV system’s parameters and usage statistics.
KEYWORDS
Low-cost, data acquisition, PV system, microcontroller.
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