Erasmus+ ERASMUS+-project: 2016-1-BE02-KA202-017316 1 “Solar Power Unit” 1 Description The greenhouse that VTI-Tielt has in mind is not only a special shaped structure but it’s also a “green” house. That means, it generate its own electricity, store it and the power management can be monitored from a distance. So in this project we will build the setup. The mechanical installation of the solar panels, the connection via the charger with the batteries. On top we will add sensors to check the current and voltage produced by the panels, the current drained from the batteries and a sensor that keeps an eye on the battery voltage. An Arduino will collect the data, transmit it to the master computer, a Raspberry PI3, and to a local LCD display. 2 Task. Belgium is a country close to the sea. So it has a mild climate. But we also have a lot of overcast days. Sometimes the sun is hidden for a week. That reduces the solar energy dramatically. Because of that, one panel won’t be enough so we will take 2. The solar panels we use, generate a voltage of about 27 Volt. Reducing 27V to 12V to charge a battery isn’t the best option. Instead we will use 2x12V batteries and take 24V as main power. The advantage is that it makes it possible to work in the future with industrial PLC’s and sensors as well. 3 Setup. The hart of the facility is 2 silicon batteries 12V each, 2 solar panels and a charger. With these we will be able to collect, store and deliver electricity to the greenhouse. Beside the main voltage of 24VDC we also need 230VAC. To generate this we will use a convertor with 24VDC input to 230VAC output. A 300W type is enough to feed the 230V users. On top we will need a fuse box so the installation is safe against short-circuit and overload. That makes a setup that can be simplifies to this.
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“Solar Power Unit”80.81.232.131/Solar Power Unit/Solar Power Unit.pdf- Check the charger, test voltage, current and al parameters according the manual - Check the invertor and
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