Power Designer 6 0 Portable.rar Hit
Iberio Ralda
A few months have passed since I presented my first Portable Wind Turbine prototype on this platform. Its creation was inspired to provide a backup solution to recharge my electronic devices, during my explorations away from conventional power sources. Normally on my trips I take with me a 10000mAh (37Wh) PowerBank and a small 10W portable Solar Panel. Generally, the Power Bank is more than enough for me and the Solar Panel is a backup in case I use up all the power from the Power Bank and need to recharge my devices.
I have my doubts about being able to do these tests with wind in an open environment without a regulator. The leds could burn out! Note that when the Windturer is running at no load the RPMs are much higher until it stalls. Always try to put a load on the WINDTURER that allows it to start easily but the RPM does not get out of control.
In particular I used a Gimbal motor like this: -gimbal-motors/iflight-rc-ipower-brushless-gimbal-motors/ipower-gbm5208-180t-brushless-gimbal- motor-dslr/
Parts for the new assembly are designed based on the dimensions of this electric motor.
Any motor with similar characteristics will work correctly. Unfortunately I have noticed that they are becoming scarcer since fewer and fewer get to make their own GIMBALS.
I'm currently testing one of the RCTimer brand on a garden non-articulated WINDTURER variant ( -gimbal-brushless-motor-90t-for-red-epic-ect-p0459.html) and the results are somewhat better. Unfortunately they seem a bit expensive. In the future I will develop my own version of a 3D printed generator.
See you in a next LOG, good luck to all!
Another aspect to highlight is that it can be created from 18650 cells recovered from disused laptop batteries, power tools, etc... With this we are recycling and giving a new use to these batteries that would otherwise end up in the trash.
In the previous photo you can see that this battery is made up of (6)) 18650 cells in 2S3P configuration. The circuit that can be seen above these cells is a BMS (Battery Management System) and the one that can be seen below is the charging circuit, charge level indicator and USB output. You can charge this type of battery with a charger specialized in NP-F batteries or simply through a micro USB connector. You can also power your compatible USB devices directly from this battery.
This simulation tells us that at wind speeds of 30km/h a maximum generation power of approximately 40W is obtained. At lower speeds and more common at low altitude, say 20 km/h we get about 12W. Although it could be stated that we have designed a 40W Power wind turbine, this statement is really not very transparent and only in exceptional cases could we obtain those values.
In this LLT (Lifting-line theory) simulation, the three-dimensional behavior of the designed Rotor is appreciated when it faces a wind flow of 6m/s (21.6 km/h), obtaining about 26.3W of power. In real conditions and considering...
Prototype 1 turned out to be well accepted and today I am proud to receive feedback from users of this platform who have already replicated it and are getting their own performance and application experiences. It has been used as a power source for automatic chicken coop doors, even as an electrical power source for remote sensors that measure humidity, temperature, wind speed, etc.
While I do think this project was incredible to watch, I would not recommend anyone thinking they can recreate this themselves with the BOM as it stands now. I understand parts change and projects get modified along the way but after ordering all the items back in November, waiting for everything to arrive, building my own rectifier and trying the solid state version as well, the project is essentially a very complicated way to make about 1 volt of power. I have the Windturer running quite quickly in front of a larger sized fan and it is spinning freely and the best it can do is about 1 volt. I hooked another one of the BLDC motors to my 1800 rpm Ryobi drill and it produces about 7.5 volts at full speed with the scratch built rectifier and 5.4 volts with the solid state one also in the BOM. The potential is there but I cannot imagine any scenario where you could find enough wind to generate that kind of rpm and I would not be comfortable standing anywhere near those blades going that speed.
I ordered a new BLDC unit from the link I shared and it doesn't exactly match the one I originally purchased. The most worrying thing is that they have replaced the magnets with a magnetic strip similar to those used in the joints of refrigerators. Although winding these new units can certainly bring the kV value down from 260 (calculated by me) to a lower value, I still have doubts that it is an effective generator. I have just removed my recommendation towards the buy link for this generator on Aliexpress as I cannot guarantee the quality of the products they deliver compared to what I originally purchased.
Currently I am characterizing other BLDC motors to adapt them in my design. The best option so far that I have found are the BLDC motors used in Gimbals. I am currently studying the IPOWER GDM5208 and I think it meets expectations. They are a bit more expensive, but there are no other options that I have found viable. Something that I wish was different is regarding the gauge of wire used, which is very thin. This causes the ohmic resistance to be 10-15 ohms per phase.
-rc.com/ipower-motor-gm5208-12-brushless-gimbal-motor-pro279
-gimbal-motors/iflight-rc-ipower-brushless-gimbal-motors/ipower-gbm5208-180t-brushless-gimbal-motor-dslr/
This motor has a kV value between 30-45 depending on the variant. There are two models, one with 24 poles and the other with 12 poles. I think the 12 pole variant has slightly better performance for this purpose.
Another option would be skateboard hub motors, although I think they would be a bit heavy. I would have to try.
If you want to rewind the BLDC I suggest you this video by Great Scott on this subject and read the related log in my project.
The new BEAD BAZOOKA utilizes an upgraded version of the trigger-operated rapid air release (RAR) valve technology found in the original BEAD BAZOOKA models. The extra power it delivers allows it to be smaller and lighter while still allowing the user to seat even the most stubborn tire beads. The new valve is also easily serviced or replaced so that you can expand its service life and maximize uptime.
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PeaZip Portable (64-Bit) presents all the power and speed of most compression software in a neat, tidy package. It's one of the few downloads of its kind that is a downright pleasure to look at. The fact that you can stick it on a USB drive and take it with you just makes it even better.
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