Hi,
I am working on a project where I want to connect a rechargeable battery with a wind turbine. This wind turbine will charge the battery which will power the arduino UNO along with LTE module mounted on the arduino. The wind turbine that I want to make is a VAWT.
If anyone has any idea about what should be the specifications of battery and the wind turbine motor. The wind speed can be taken constant at about 10m/s.
If the wind speed is constant and you use a big enough VAWT, then you don't need a battery.
There is a space constraint in which I can only install a savonius wind turbine of projected blade area of around 75-100 cm^2. I want to install this turbine in a 20 inch diamter pipe, through which I can power an arduino UNO with LTE module. I tried testing a wind turbine with approx. 75 cm^2 savonius wind turbine, but the generated power was not enough to power an arduino UNO. Hence, I am seeking help.
First:
- Determine the energy required by the Uno (Wh)
- Determine the energy required by the LTE (Wh)
- Determine the energy generated by the VAWT (Wh)
If the energy generated by the VAWT is less that the energy required by the Uno and LTE, then it will never work no matter what size battery you use.
For a rotor of area 75 cm^2 and wind speed 10 m/s, I estimate the power theoretically available in the wind to be about 4.6 W. If converted to electrical power with reasonable efficiency, that is more than enough to power an Arduino, but not an LTE module.
Check whether I made a mistake.
Actually, I am planning to make a sensing system (Using arduino UNO + LTE model + some pressure sensor) for gas pipeline leak detection. This will be powered by the wind turbine that I mentioned above. So, the pressure inside gas pipeline is around 7 bar at which density of gas is around 4.808 kg/m^3 and has an velocity of around 10m/s. So the power produced by the given formula taking into consideration the Cp of wind turbine. The power generated by the wind turbine would be around 7 Watts.
The problem is operating voltage of arduino which is around 5.5 V and LTE module has operating voltage of around 8V, but we are only able to produce 1V through the given turbine. So, any suggestions to increase the output voltage to match the operating voltage.
Have you considered solar instead of wind?
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If the wind turbine can only produce 7W part of the day, you must have a charger between the turbine and the battery pack. Size the battery pack for an output of at least 8V. The Arduino VIN can handle that fine, and it's enough for LTE. Make sure you size the battery so it can provide power while the wind does not blow. You will need to know the peak and avg loads of the LTE and the Arduino, then it's simple math.
I don't think there are any off-the-shelf devices/modules that will boost 1V to any higher voltage. You will probably need a custom design
Your wind turbine output is AC or DC?
Wouldn't it be easier if you post specs of your turbine and LTE module?
Hi, I have switched the turbine to HAWT. The open circuit voltage is 25V and the current measured through a load of 218 ohms was measured as 0.013A. I am using LTE module A7672s along with an Arduino UNO board. I found recommended voltage for LTE module to be 3.8V and max current required in running mode is around 0.65A. The operating voltage for Arduino UNO is given as 2.7V - 5.5V and the current was not mentioned.
If anyone has ideas of what should be the current consumption of Arduino UNO along with LTE module installed on it please do tell along with any suggestions on how to achieve these ratings.
Wrong.
You can supply the Uno R3 with 5.0V through the USB port or 7 to 12V through Vin or barrel connector. The amount of current will depend on what processing is going on and you should measure it with a fully operational program running
That is only 37mW of power, about enough to light one maybe two LEDs
See post #4
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