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How do I successfully drive this MOSFET for a dump load resistor with a wind turbine?

I am constructing an AC-DC Rectifier with dump load control for a wind turbine (see Schematic for info). The following use cases are required: Rectifier rectifies AC into DC and provides energy to ...
Jasper's user avatar
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1 vote
1 answer
75 views

Depletion type MOSFET for dump load resistors in wind turbines [closed]

I recently asked a question to do with dump load resistors for wind turbines see link: MOSFET Driving for a Dump Load Resistor within a wind turbine General Specs: 6kW Wind turbine Dump load: 500 V ...
Jasper's user avatar
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3 votes
4 answers
177 views

MOSFET Driving for a Dump Load Resistor within a wind turbine

I am currently designing an AC-DC rectifier for a 6 kW small-scale wind turbine. As part of this setup, I intend to integrate a dump load resistor to regulate overvoltage. When the DC voltage reaches ...
Jasper's user avatar
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3 votes
1 answer
73 views

Using Zener diodes to limit the max RPM of wind turbine

A windmill produces AC voltage, with increasing voltage as the turbine spins faster. If you know the max safe RPM, you could find the associated max safe voltage (V_safe). Additionally, when the leads ...
kevinbuiied's user avatar
0 votes
2 answers
89 views

How do the comparators in this circuit work? Do they compare the voltages between themselves? How do comparators generally work?

This is the schematic of the circuit my question references. I understand that the potentiometers are set at 2 different levels and the comparators then send out signals based on whether its above or ...
user357057's user avatar
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0 answers
16 views

Back-to-back PMSG based wind turbine

We have a PMSG based wind turbine with back-to-back converter. Now, the Permanent magnet provides a rotating magnetic field. So, how does the reactive power exchange happen between converter and grid?
SaJ's user avatar
  • 166
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0 answers
29 views

Wind turbine: Back-to-back converter DC link

In the Type 4 topology of wind turbine generator, we use a back-to back ac/dc/ac converter in PMSG based wind turbine. Why do we need a dc link? Why cannot we simply use a cyclo-inverter instead of ...
SaJ's user avatar
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3 votes
3 answers
409 views

What do these 2 NOR gates do in this wind turbine charge controller?

I have the schematic for a wind turbine charge controller from here. What is the purpose of the two interconnected NOR gates in the middle of the schematic?
user357057's user avatar
1 vote
0 answers
60 views

Advice on design of a Wind Turbine system

I am currently doing GDP at university. Our project is about creating a portable wind turbine which can be used to charge phones and batteries via USB output (5V). As mechanical engineers we don't ...
BobTheMechEng's user avatar
1 vote
1 answer
136 views

Is it ok to short two phases of a wind turbine together through a transformer?

I have a wind turbine that I intend to measure the speed of by measuring the frequency between two of the phases and then relate the value to the speed of the generator. The frequency meter couldn't ...
Shamooooot's user avatar
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1 answer
43 views

Dual-Power Sourcing for 15MW Electrolyser: Wind Farm and Electrical Grid Feasibility [closed]

I am part of a team working on a 15MW electrolyser project comprising six 2.5MW containerized electrolysers. This setup will be positioned near a 20MW wind farm, and there is also the potential for us ...
Ricardo's user avatar
1 vote
1 answer
120 views

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 ...
formerlolz's user avatar
7 votes
1 answer
732 views

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-...
formerlolz's user avatar
1 vote
2 answers
128 views

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) ...
formerlolz's user avatar
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1 answer
71 views

Using a voltage divider to measure output of generator, and use an Arduino to measure wind speed

I am currently part of a group project in which we are required to build a turbine and generator that will turn on a light at a wind speed of 10 m/s. How will I use the fluctuating voltage out of the ...
Poorprogrammer's user avatar
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0 answers
48 views

Electric Torque Equation of DFIG Wind Turbine

I go through the several books and research paper related with DFIG wind Turbine. There is some confusion regarding these two equations. Can any one clarifies this confusion? In one place Te = Kopt * ...
aman2909's user avatar
2 votes
2 answers
336 views

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 ...
Andy Ashwood's user avatar
1 vote
2 answers
249 views

How does a power generator control its output to the grid?

I found this answer: On-grid solar system - how to control power out from solar system to grid? But I would like to know a little more about the details and the dynamics of the inverter. As an example,...
BenG's user avatar
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1 vote
0 answers
769 views

Is it possible to convert a washing machine motor to become a useful wind-turbine generator?

I'm looking for a way to acquire a generator for a wind-turbine. The generator should produce a lot of energy with very low RPM. Also I don't want expensive options. One thing I'm thinking about is to ...
Melanie Olk's user avatar
3 votes
1 answer
93 views

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 ...
Jithma Senarathne's user avatar
5 votes
2 answers
225 views

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 ...
GCJB's user avatar
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1 vote
3 answers
549 views

How can the energy produced by a generator be fed back to the motor that rotates the generator?

The drawing below shows an induction motor (IM), powered from the grid through a variable frequency drive (VFD). This IM, through a gearbox, rotates a permanent magnet synchronous machine (PMSM) ...
Robert Werner's user avatar
0 votes
1 answer
110 views

Electric Turbine Generator using Fan Motor

I need to build a turbine with permanent magnets using a table fan motor, I've come across many tutorials but none of them describes well all the physics on it, it would be appreciated if anyone has ...
Googlian's user avatar
  • 101
-1 votes
1 answer
276 views

How to use inverse function of Cp vs Lambda of wind turbine in MATLAB script

I want to use inverse function. I know the value of Cp and I need to calculate Lamda and Beta through this formula. How can I do? I think it has to do with a lookup table of Cp vs Lambda for DFIG Wind ...
aman2909's user avatar
1 vote
1 answer
574 views

3-phase star transformer connection with no neutral for wind turbine

I built a wind turbine a while back and have been using it to power lights in my house. It gives out 3-phase in star setup with no neutral. Neutral is buried in epoxy resin in the casting. It feeds ...
Omasín's user avatar
  • 23
0 votes
0 answers
90 views

Charging a 12vdc lead-acid battery bank with two different power sources (solar & wind)

Looking to upgrade an existing solar system with two (2) 285W panels going through a 40A MPPT solar charger. The solar charger is charging 4 6v lead-acid deep cycle batteries. ((Cell 1 + Cell 2) || (...
engineer's user avatar
-1 votes
1 answer
3k views

What DC motor specs for wind turbine science project?

I am trying to build a model wind turbine to power an LED for a science project. The motors we have don't seem to work well. I'd like to turn a turbine with a hair blow drier and have that light up an ...
Benyomin Walters's user avatar
1 vote
1 answer
121 views

Power a servo momentarily using a capacitor for geocaching

I'm trying to build a cache for geocaching based on a movie - The Boy Who Harnessed the Wind Those who don't know what geocaching is, please visit here. It is a fun activity. I have this idea for a ...
Feiticeir0's user avatar
0 votes
1 answer
37 views

Generator Charger Grounding

A while back I sketched up a small charge control circuit that can be used with either a wind or solar generator scenario. This is only meant for smaller 12V 10-30W /hobbyist/home made generators and ...
Caleb's user avatar
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0 votes
2 answers
380 views

Vaneless ion wind generator: isn’t the maximum output theoretically limited?

I was thinking more specifically about the Dutch model of the kind EWICON : https://en.m.wikipedia.org/wiki/Vaneless_ion_wind_generator Here is what puzzles me: If the wind is strong enough to carry ...
Serge Hulne's user avatar
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0 answers
77 views

Power coefficient Cp of wind turbines

The power coefficient of wind turbine (ratio between useful mechanical power and the total wind power) varies when the tip-speed ratio varies. I know also that we tend to keep constant the power ...
Samuele Benito Di Gioia's user avatar
3 votes
1 answer
450 views

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 ...
Snick's user avatar
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29 votes
6 answers
5k views

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....
Z_F's user avatar
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2 votes
0 answers
3k views

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 ...
hurreechunder's user avatar
1 vote
1 answer
297 views

How can I efficiently convert the output voltage of a 3 phase generator of 700V to 12V, 24V or 48V DC?

I recently bought a wind turbine electric brushless generator rated for 3kW. I noticed that the output voltage is really high - it is around 700V at 5400 RPM. After some research on stackexchange, I ...
abdussamed17's user avatar
0 votes
1 answer
64 views

Which form between solar panel and wind turbines requires less cost in servicing?

I found that the average life of a solar panel is about 25 years and that of the the wind turbine is also somewhat close to 25 years. But the wind turbines require alternator in order to generate ...
Tank's user avatar
  • 9
3 votes
2 answers
171 views

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 ...
Steve G's user avatar
  • 31
-8 votes
2 answers
1k views

Using solar power to create steam to spin turbine [closed]

Please read this question again now I have amended a glitch. The idea it to use a small solar panel to generate electricity, which will be sent to an element (or other device) which will heat up water ...
securityauditor's user avatar
1 vote
0 answers
35 views

Currents injected in the grid, connecting a wind turbine

I'm studying the connection to the grid of a wind turbine through a three-phase inverter. Now I understand that , in normal operating conditions, in the connection to the grid, the reference for id ...
Granger Obliviate's user avatar
0 votes
2 answers
335 views

How are physically obtained different rated voltage output -12/24/48 V- for a PMSG driven by a very small wind turbine rotor?

In some very small wind turbines (less than 1kW) specifications it is reported that the alternator is of threephase AC permanent magnet synchronous type and that the rated voltage could be 12V/24V/48V....
Mario marzio's user avatar
0 votes
1 answer
101 views

Circuit for stabilizing the mini - 3 phase wind turbine output to 5 Volt using 7805 IC

I am trying to get some stable output from a Brushless power generator/motor/turbine which i purchased from Aliexpress Mini Micro Small 3 Phase Turbine To check if it works i tried to rotate it and ...
Moons's user avatar
  • 137
2 votes
4 answers
3k views

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 ...
Steven De Groote's user avatar
0 votes
2 answers
448 views

Unstable DC voltage ~ 300v to regulated 120V conversion

I need your advice for transforming DC voltage which is coming directly from many bridge rectifiers connected the pluses and minuses (from custom made multi phase wind alternator). At the bridges ...
Soko Fuzu's user avatar
4 votes
1 answer
332 views

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 ...
Mike H's user avatar
  • 149
0 votes
2 answers
730 views

Homemade dynamo and alternator

I'm a curious person that knows only basic physics, and I want to craft a homemade power generator (eolic, magnetic or hydroelectric, the origin of the energy doesn't matter yet). I would like to ...
André Ventura's user avatar
8 votes
3 answers
18k views

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 ...
Electronic Curious's user avatar
6 votes
2 answers
1k views

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 ...
Everyone's user avatar
  • 3,011
9 votes
3 answers
1k views

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 ...
Kellenjb's user avatar
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