Need help with Axial flux generator

Click For Summary
SUMMARY

The discussion centers on the operation of axial flux generators in wind turbines, particularly in high wind conditions. It is established that the conventional method for slowing down a wind turbine involves "feathering" the blades, which effectively reduces the turbine's speed without wasting power. The idea of using an external power source to create electromagnetic resistance for stopping the turbine is proposed but deemed less practical than existing methods. Additionally, orienting the turbine side-on to the wind is mentioned as an alternative strategy to manage excessive wind speeds.

PREREQUISITES
  • Understanding of axial flux generator mechanics
  • Knowledge of wind turbine operation and control systems
  • Familiarity with electromagnetic principles
  • Experience with power management in renewable energy systems
NEXT STEPS
  • Research "wind turbine feathering techniques" for effective speed control
  • Explore "electromagnetic braking systems" in renewable energy applications
  • Investigate "wind turbine orientation strategies" for high wind conditions
  • Learn about "power management systems" in wind energy generation
USEFUL FOR

Engineers, renewable energy researchers, and wind turbine operators seeking to enhance turbine performance and safety in high wind scenarios.

berserkhealr
Messages
1
Reaction score
0
TL;DR
Can you slow down a axial generator by cutting the flow of the power been generatored and then putting a current back into the generator to slow it down and then hold it at a stop?
I am sure axial are used in wind turbines so i will use it as my example.

Say you are using the wind turbine to generate power but its getting to windy and you want to slow down the turbine to bring it to a stop.

What i want to know is ...

If you can cut off the power that's been generated, to then have power inputted into the generator from another sauce would this then act as a type of electromagnetic and use this to help slow down the turbine to bring it to a stop and hold it in place?
 
Engineering news on Phys.org
Welcome to PF.

The usual way to deal with high winds is to "feather" the blades of the wind turbine to slow them to a stop. This is much more practical that wasting a bunch of power to actively slow-stop-hold the blades and connected generator.

1627487022670.png

https://www.researchgate.net/figure/A-wind-turbine-shown-in-a-feathered-position-during-the-curtailment-experiment-at-the_fig3_261939946
 
Another way is to turn the turbine side on to the wind so as to reduce the speed and power.
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

Similar threads

  • · Replies 38 ·
2
Replies
38
Views
5K
  • · Replies 8 ·
Replies
8
Views
5K
Replies
1
Views
3K
Replies
13
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K