Hello , very cute and thoughtfully designed Turbine , exactly the right answer to disappointing small windturbines performance issues in low wind , but wouldn't it be better , if connected to a battery , directly to do that via an extra Mppt controller that can handle the say 37 Volt of the turbine more efficient to charge a 12 or 24 Volt battery ? The two powerbanks you tried, both should have an inbuilt MPPT controller anyway
Correct, when charging power banks with build in MPPTs there is additional losses of 2-10% depending on the model and power level. The ground converter unit that we supply can charge 12 or 24V battery systems directly - as shown in the video towards the end. It functions a differently from a typical MPPT (from a control logic perspective) as it most cases we let the turbine determine the optimal power levels.
@@AndreasOkholm thanks Andreas , but i did mean that charging a 12 volt battery bank with a windturbine that is producing more than 37 Volt , like seen in the clip , is simply not so efficient as using an Mppt charge-controller in between your groundbox and the battery bank , i am aware of some MPPT Windturbine controlers that have proven that a MPPT controller can even double the production , sure in your case it might be diffrent as you use a DC Generator , most others use a 3 phase AC Generator and rectify external to DC For example if you have a PV-Panel that has a voltage of 32 Volt and is rated as a 320 Watt Model so it can deliver max 10 Ampere ( thats all written on the back of the panel) So if i connect that directly to a 12 Volt battery the 10 Ampere rating remains .... but , but , but the system voltage is determined by the 12 Volt battery that would then mean that 10 A x 12 Volt = 120 Watt thats all you get from that panel . But if you use a 24 Volt battery its not as bad as 10 A x 24 Volt = 240 Watt so one looses still 80 watt of the panels potential , but better than loosing 120 watt in a 12 Volt system , so by using an MPPT controller that then lets the panel produce its rated 10 A x 32 Volt = 320 Watt , but , but when one the messures the A(ampere) at the 12 volt battery then you will see 26.6 A x 12 Volt = 320 Watt , No criticism at all , but just thought it might be worth while of a thought and i am pretty sure you played with charge controllers as well . Your turbine even might work with a standard PV -MPPT one , as it rotates stable and slow , must other Windturbines would need a special Wind -Mppt one as they react faster than the PV ones .... there is a german company called "schams-solar" that produces small Wind-MPPT controllers starting at 250 watt rated ones and more pricey one is the "Midnite classic" . Hope thats ok to mention here in your channel , but they don't sell wind-turbines , i personally went another road (was off-grid in Ireland for many years) and connected a cheap GTI ( grid tie inverter ) to my battery charging 1600 watt Windturbine ( they have an in built MPPT) to feed 230 Volt AC of the 24 DC-Volt Turbine directly into my house .... Anyway your turbine design is just super clever and detailed and at my spot now in Germany is not ideal for windpower , but your design made me smile and i am starting to test the wind in the field behind my house now 🤣 Keep up the good work and am looking forward to follow your future 🌻🌻
@@larsbueb137 Just like with the mechanics of the turbine, there is a lot more going on behind the scenes in terms of our electronics. > is simply not so efficient as using an Mppt charge-controller in between your groundbox and the battery bank Our ground converter box does feature build in digitally controlled step down converter. (It's the same electronics topology as in a MPPT unit). The losses electric losses is similar to a conventional MPPT.
amazing product! This is the only small wind turbine on the internet really capable of delivering power. 250 W wow, and so lightweight and quiet!
In NL we have been Retro fitting old windmills . But this is really Nice .
awesome I check all the time for new personal wind turbines and I can just say wow this is one hell of a platform good job 👏👏👏
Ist der Windcatcher für den Dauerbetrieb in einem Garten geeignet?
what was the wind speed by this presentation?
If I (presenter) recall correctly - the turbine produced about 150 W on average. That corresponds to about 4-5 m/s on average.
Hello , very cute and thoughtfully designed Turbine , exactly the right answer to disappointing small windturbines performance issues in low wind , but wouldn't it be better , if connected to a battery , directly to do that via an extra Mppt controller that can handle the say 37 Volt of the turbine more efficient to charge a 12 or 24 Volt battery ? The two powerbanks you tried, both should have an inbuilt MPPT controller anyway
Correct, when charging power banks with build in MPPTs there is additional losses of 2-10% depending on the model and power level. The ground converter unit that we supply can charge 12 or 24V battery systems directly - as shown in the video towards the end. It functions a differently from a typical MPPT (from a control logic perspective) as it most cases we let the turbine determine the optimal power levels.
@@AndreasOkholm thanks Andreas , but i did mean that charging a 12 volt battery bank with a windturbine that is producing more than 37 Volt , like seen in the clip , is simply not so efficient as using an Mppt charge-controller in between your groundbox and the battery bank , i am aware of some MPPT Windturbine controlers that have proven that a MPPT controller can even double the production , sure in your case it might be diffrent as you use a DC Generator , most others use a 3 phase AC Generator and rectify external to DC For example if you have a PV-Panel that has a voltage of 32 Volt and is rated as a 320 Watt Model so it can deliver max 10 Ampere ( thats all written on the back of the panel) So if i connect that directly to a 12 Volt battery the 10 Ampere rating remains .... but , but , but the system voltage is determined by the 12 Volt battery that would then mean that 10 A x 12 Volt = 120 Watt thats all you get from that panel . But if you use a 24 Volt battery its not as bad as 10 A x 24 Volt = 240 Watt so one looses still 80 watt of the panels potential , but better than loosing 120 watt in a 12 Volt system , so by using an MPPT controller that then lets the panel produce its rated 10 A x 32 Volt = 320 Watt , but , but when one the messures the A(ampere) at the 12 volt battery then you will see 26.6 A x 12 Volt = 320 Watt ,
No criticism at all , but just thought it might be worth while of a thought and i am pretty sure you played with charge controllers as well . Your turbine even might work with a standard PV -MPPT one , as it rotates stable and slow , must other Windturbines would need a special Wind -Mppt one as they react faster than the PV ones .... there is a german company called "schams-solar" that produces small Wind-MPPT controllers starting at 250 watt rated ones and more pricey one is the "Midnite classic" . Hope thats ok to mention here in your channel , but they don't sell wind-turbines , i personally went another road (was off-grid in Ireland for many years) and connected a cheap GTI ( grid tie inverter ) to my battery charging 1600 watt Windturbine ( they have an in built MPPT) to feed 230 Volt AC of the 24 DC-Volt Turbine directly into my house .... Anyway your turbine design is just super clever and detailed and at my spot now in Germany is not ideal for windpower , but your design made me smile and i am starting to test the wind in the field behind my house now 🤣 Keep up the good work and am looking forward to follow your future 🌻🌻
@@larsbueb137 Just like with the mechanics of the turbine, there is a lot more going on behind the scenes in terms of our electronics.
> is simply not so efficient as using an Mppt charge-controller in between your groundbox and the battery bank
Our ground converter box does feature build in digitally controlled step down converter. (It's the same electronics topology as in a MPPT unit). The losses electric losses is similar to a conventional MPPT.