Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [windturbine]

39 questions
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Do power plants supply their own electricity?

I tried looking it up but there's no answer for this. This is mainly concerning nuclear power plants or natural gas plants, where they would have other buildings attached on site to operate the plants. When they run the plants does it go to the grid…
Z_F
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Harvesting energy from a small amount of wind

I am currently investigating the feasibility of a project that would include the need of harvesting some energy from wind. The size constant of the generator and fans is about 2"x2"x2". The end goal would be to trickle charge a capacitor that would…
Kellenjb
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Wind turbine generator: brushed or brushless DC motor?

I am trying to use a DC motor as a generator for a wind turbine but then there are two possibilities for the DC motor which are brushed and brushless. Which one is more efficient to use? I know that if I use a brushless motor then I need to use a 3…
Electronic Curious
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Do wind turbine permanent magnet generators have I-V power curve in the same way solar panels do?

I've been reading about the I-V curve - or power curve - of solar panels and photovoltaic cells and how exposure to light, heat, load, etc. affects the ratio (?) between current and voltage in a non-linear manner. Does the sort of synchronous…
robobozo
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How does a wind farm prevent the fastest spinning turbine from driving the slowest one?

Just what the title says. On a wind farm spread across several score hectares, I assume, the wind-speed wouldn't be uniform. The faster spinning turbines would probably induce more electricity than the slower ones ... Assuming the output from the…
Everyone
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Overvoltage Protection

I just destroyed my $1,500.00 wind turbine's battery charging module. I think I need a surge & overvoltage arrestor to add to my system to protect its replacement. We have a small family farm in Northern Ontario Canada. We are off-grid, producing…
GCJB
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Wind turbine power characteristic

The following graph was obtained using the MATLAB Doubly-Fed Induction Generator (DFIG) wind turbine model. I'm confused about why spikes occur at the points A to B and C to D. If you have any reference books related to the graph please let me…
Jithma Senarathne
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How can wind turbine be used to frequency control in a grid?

I was listening to an interview (sorry don't have the source) from the Mexican's minister of energy, where he mentioned 'Wind turbines are useful even when the wind is not blowing because they can be used as frequency regulator'. Now I understand…
Snick
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Wind-powered fairy lights + battery charger: preliminary help

I'm new here and asking for help designing a yard-art project. I would like to use a small DC motor as a wind-powered generator to charge a battery (with overcharge prevention) and run some battery operated fairy lights. I'm looking for autonomous…
Steve G
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How much installed capacity of wind or PV would be required to match the output of a 4 GW nuclear power plant?

I am trying to understand the challenge of decarbonising the power grid, and the equivalence between different generation technologies. If a nuclear power plant has a capacity of 4 GW and a capacity factor of 90%, how much installed capacity of wind…
Mike H
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Garden windmill power generation

For the past year or so I have been 3D printing various windmill designs for my garden just as experiments and ornaments. Almost without exception, everybody who sees them asks me when I am going to start generating some electricity from them. I…
Andy Ashwood
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Wind Turbines - Tip Speed Ratio

The tip speed ratio is given by TSR = w.R/v where w = rotational speed of the turbine, R = radius and v = wind speed. Now the speed of the tip is a function of the energy extracted from the wind, but the energy extracted from the wind is also a…
hurreechunder
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Torque of motor vs operation as generator

While trying to work out which motor to use for a wind turbine project, I'm coming across torque numbers for DC motors. I'm mainly looking at a BLDC motor right now. Clearly, for a smallish turbine that I'm aiming for, I'm looking for low startup…
Steven De Groote
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Looking for ways to combine the power outputs of different renewable energy sources

I've been researching ways of combining the outputs of different renewable energy sources (e.g. solar panels and DC rectified wind turbines) to provide a single output that could then be connected to a charge controller. I've started with two…
robobozo
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Can you connect different renewable energy power sources with equivalent power ratings in series and/or parallel?

You should be able to connect multiple solar panels of the same voltage and watt rating in series and/or parallel. What about connecting two different power sources with equivalent (or similar) voltage/current/watt ratings? Example: Connecting a…
robobozo
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