I am an E&E engineer and would like to get into Wind Energy Industry. Looks like this is a DFIG Wind Turbine. The contents you have in your channel about wind turbines are excellent. Please upload Sub-Synchronous Speed Operation, and Super-Synchronous Speed Operation of the DFIG Wind Turbine if possible. I think newer installations are mostly either direct Drive PMSG or Gear Coupled PMSG type. Please let us know your views about this.
This turbine is a simple AIG ( short-circuit rotor) type and directly grid-connected with two speed levels (1000 and 1500 rpm). Let's see if I have one under synchronous running on video, of which you notice, except at the speed, nothing. Oversynchronous operation of DFIG can be found for example in my video "Testrun and Tour through Windturbine GE 3.6MW 137m at high Windspeeds". Most modern turbines have either: - DD PMSG (direct drive permanent magnet induction generator) - Geared PMSG (gearbox permanent magnet induction generator) - DD DFSG (direct drive double fed synchronous generator) which all run on a full inverter. But there are also DFIGs with partial inverters, which are cheaper because you don't need the big inverter. PMSG generators are currently on the rise, mainly due to their high power density and relatively low costs. To what extent one can produce and use responsible and resource-saving permanent magnets is debatable, but unfortunately I have no knowledge about it and who has no expertise, should rather keep his opinion to himself ;)
@@saasch_baasch Thank you for the expert explanation. In Synchronous Generator the excitation system needs to be a Static Exciter with Slip Rings to make it a DFSG. if it's a Diode type RRA Rotor, is it possible to operate it as DFSG please let us know. Would like to see a video with nameplate details of a DFSG if possible. Wonder how they calculate the moment of inertia of those heavy wind turbine blades.
Yes, the excitation is a static type. I've never seen a RRA type in a wind Turbine, maybe because it needs more space in the Hub. The moment of inertia is calculated with the masses and the center of masses of the Blades and the Hub, the inertia is huge, I will search for specific values to post. Type specifications and not publicly available data I do not want to post here for privacy reasons, I hope you can understand that, but I see, that you are experienced in this topic too 👍
I'm hearing quit often that some wind turbines are turning with electricity from the grid when theres no wind... "for grid balancing purpose". Is it real? From what I've understand, the only moment where wind turbine are turning without wind is for maintenance/inspection of the blade?
I'm no expert, but I guess this was only somewhat true for early, fixed-speed WTs with synchronous generators and only for brief periods of time as the wind speed is slowing down. No real "balancing" happening there IMO.
I have heard the same thing, but I can assure you that it is not done, at least in europe. Basically, such a thing is also not possible without changing the control or wiring of the system. Even during maintenance work or blade inspections, the rotor rotates solely due to the wind. there are only very few systems that can rotate the rotor via the grid. however, this is in no way intended to stabilize the grid or to generate wind. the speed is also very low and the only purpose is to rotate the rotor to a certain position when there is no wind, for example for blade inspections, but this is rarely used. Greets :)
yes, if there is already little wind and it then decreases for a short time, it can actually happen that a small amount of power is taken from the grid. this is intentional, since the entire power of the system goes through a main switch and this only allows a limited number of switching operations. therefore, a certain period of time has been programmed in here in which the main switch remains closed in order to avoid frequent switching operations. however, as already mentioned, this only exists with the old, directly coupled systems.
Nice to be able to use hands to rotate brake disc. Easy to lock rotor then 😉 can you rotate disc by hand when blades pitched at 89 degree's and turbine in emergency with fault And yaw 180 degree out of wind 😉
Do you work indipendant...i have a job for you ...i want to buy one wind turbine and i want from you to see it and tell me if i s worthit or not...can you do that?
For Real! In Germany we had some villagers complaining about to have "no more wind" when wind turbines are built nearby. This is not how bernoulli works 😄
@@mmm-qn8vr uuuh, I visited a D4000 just some weeks ago. They are still quite "rare" for now. I have a short clip of a (shitty) testrun weather in a delta 4000 or delta, I am not quite sure. Maybe I will do an upload soon.
Nice demonstration on the gearing ratio as well. 👍
I am an E&E engineer and would like to get into Wind Energy Industry. Looks like this is a DFIG Wind Turbine. The contents you have in your channel about wind turbines are excellent. Please upload Sub-Synchronous Speed Operation, and Super-Synchronous Speed Operation of the DFIG Wind Turbine if possible. I think newer installations are mostly either direct Drive PMSG or Gear Coupled PMSG type. Please let us know your views about this.
This turbine is a simple AIG ( short-circuit rotor) type and directly grid-connected with two speed levels (1000 and 1500 rpm). Let's see if I have one under synchronous running on video, of which you notice, except at the speed, nothing. Oversynchronous operation of DFIG can be found for example in my video "Testrun and Tour through Windturbine GE 3.6MW 137m at high Windspeeds".
Most modern turbines have either:
- DD PMSG (direct drive permanent magnet induction generator)
- Geared PMSG (gearbox permanent magnet induction generator)
- DD DFSG (direct drive double fed synchronous generator)
which all run on a full inverter.
But there are also DFIGs with partial inverters, which are cheaper because you don't need the big inverter.
PMSG generators are currently on the rise, mainly due to their high power density and relatively low costs. To what extent one can produce and use responsible and resource-saving permanent magnets is debatable, but unfortunately I have no knowledge about it and who has no expertise, should rather keep his opinion to himself ;)
@@saasch_baasch Thank you for the expert explanation. In Synchronous Generator the excitation system needs to be a Static Exciter with Slip Rings to make it a DFSG. if it's a Diode type RRA Rotor, is it possible to operate it as DFSG please let us know. Would like to see a video with nameplate details of a DFSG if possible. Wonder how they calculate the moment of inertia of those heavy wind turbine blades.
Yes, the excitation is a static type. I've never seen a RRA type in a wind Turbine, maybe because it needs more space in the Hub. The moment of inertia is calculated with the masses and the center of masses of the Blades and the Hub, the inertia is huge, I will search for specific values to post. Type specifications and not publicly available data I do not want to post here for privacy reasons, I hope you can understand that, but I see, that you are experienced in this topic too 👍
Das ist doch bestimmt ne ältere Neg Micon oder? Das erkenne ich an der Knochenkupplung
Ja, das war glaube ich eine NM48/750
@@saasch_baasch ja hab ich mir auch gedacht
I'm hearing quit often that some wind turbines are turning with electricity from the grid when theres no wind... "for grid balancing purpose". Is it real? From what I've understand, the only moment where wind turbine are turning without wind is for maintenance/inspection of the blade?
I'm no expert, but I guess this was only somewhat true for early, fixed-speed WTs with synchronous generators and only for brief periods of time as the wind speed is slowing down. No real "balancing" happening there IMO.
No, I am in the wind industry for more than 10 years and can say that is not true.
I have heard the same thing, but I can assure you that it is not done, at least in europe. Basically, such a thing is also not possible without changing the control or wiring of the system. Even during maintenance work or blade inspections, the rotor rotates solely due to the wind. there are only very few systems that can rotate the rotor via the grid. however, this is in no way intended to stabilize the grid or to generate wind. the speed is also very low and the only purpose is to rotate the rotor to a certain position when there is no wind, for example for blade inspections, but this is rarely used. Greets :)
yes, if there is already little wind and it then decreases for a short time, it can actually happen that a small amount of power is taken from the grid. this is intentional, since the entire power of the system goes through a main switch and this only allows a limited number of switching operations. therefore, a certain period of time has been programmed in here in which the main switch remains closed in order to avoid frequent switching operations. however, as already mentioned, this only exists with the old, directly coupled systems.
@@saasch_baasch That's what I've been thinking. Thanks a lot
Nice to be able to use hands to rotate brake disc. Easy to lock rotor then 😉 can you rotate disc by hand when blades pitched at 89 degree's and turbine in emergency with fault And yaw 180 degree out of wind 😉
Do you work indipendant...i have a job for you ...i want to buy one wind turbine and i want from you to see it and tell me if i s worthit or not...can you do that?
woow
Quicker acceleration would be nice.
The acceleration with this type is quadratic , so it goes very slowly at the beginning😉
Stealing the Earth's wind lol.
For Real! In Germany we had some villagers complaining about to have "no more wind" when wind turbines are built nearby. This is not how bernoulli works 😄
pls enercon e138 ep3 e2
When I have the opportunity again soon....
@@saasch_baasch ok :)
@@saasch_baasch hey can you do a visit video in a nordex delta 4000 if you can ?
@@mmm-qn8vr uuuh, I visited a D4000 just some weeks ago. They are still quite "rare" for now. I have a short clip of a (shitty) testrun weather in a delta 4000 or delta, I am not quite sure. Maybe I will do an upload soon.
@@saasch_baasch ok