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Experiment 3: building a MINI wind farm

A wind farm is a collection of wind turbines in the same location. This 
may also be called a “wind power plant,” because many wind turbines 
working together can produce a lot of electricity—just like coal or nuclear 
power plants. Wind turbines are often grouped together in wind farms 
because this is the most economical way to generate electricity from the 
wind.

Two or more KidWind MINIs can be wired together to make a MINI 
Wind Farm!

Connecting turbines

When you connect your various components together (KidWind MINIs, 
load, meter, etc.), you can make more complicated electrical circuits. 
There are two ways of connecting components in a circuit: series and 
parallel.

A circuit wired in series has components connected end to end, like a 
chain. The electrons must travel a single path through all of the various 
parts of the circuit.

A circuit wired in parallel provides a different path for a current to travel 
through each of the components. In parallel, each component has a 
separate loop.

If you are connecting the KidWind MINIs in series, connect the wires of 
the turbines from positive (red wire) to negative (black wire), making one 
continuous loop through the circuit.

If you are connecting the turbines in parallel, connect each positive wind 
turbine wire (red) individually to the red lead from the multimeter or load 
device. Connect each negative wind turbine wire (black) individually to 
the black lead from the multimeter or load device.

The wires you use to connect your MINI Wind Farm to various loads act 
just like the high voltage transmission lines that bring the electricity of real 
wind farms to our homes and schools!

If you use a multimeter to record voltage and current as you add wind 
turbines to your wind farm, you will find some interesting results.

Experiment 4: How does turbulence affect wind turbines?

If multiple wind turbines are placed too close to one another or there are 
obstructions near a wind turbine, the efficiency of the turbines will be 
reduced.

Place some objects to act as trees or houses in front of your MINI and 
see how the power output changes. How does this disturbance affect the 
turbine output or performance? Some people want to put wind turbines 

When you have multiple turbines wired in series, the voltage 
should increase with each additional turbine, but the current 
will stay the same.

If you wire the turbines in parallel, the current will increase 
with each additional turbine, but the voltage will not change.

OUTPUT OF SERIES VS. PARALLEL

Examples of  a modern electricity generating 

turbine and a water pumping turbine (

not

 to scale)

MINI wind farm wired in series

MINI wind farm wired in parallel

R = Red wire

B = Black wire

R

R

R

B

B

B

R

R

R

R

B

B

B

B

Содержание MINI Wind Turbine

Страница 1: ...MINI Wind Turbine Instruction Manual...

Страница 2: ...d new power infrastructure they are choosing to build wind farms at an increasing rate Of our current electrical generation mix about 2 of our energy is produced by wind turbines That is double what w...

Страница 3: ...Turbine comes with a sound light panel that you can connect to your turbine to demonstrate power output Be sure to connect red wires to red and black wires to black The MINI Wind Turbine can power a v...

Страница 4: ...d to do some work Set the meter to 200 or 20 mA which is a typical range for our devices The current that your turbine produces depends on the load placed in the circuit and the torque your blades are...

Страница 5: ...ction The blades on modern turbines capture the wind and use it to rotate the drive shaft of a generator How well you design and orient your blades can greatly impact how fast the blades spin and how...

Страница 6: ...rallel connect each positive wind turbine wire red individually to the red lead from the multimeter or load device Connect each negative wind turbine wire black individually to the black lead from the...

Страница 7: ...placed 3 5 rotor diameters apart perpendicular to the prevailing wind and 5 10 rotor diameters apart parallel to the prevailing wind Energy loss due to the wind park effect may be 2 5 What effect do...

Страница 8: ...the pitch Try making the blades flatter toward the fan 0 5 Pitch dramatically affects power output so play with it a bit and see what happens You can use a protractor to measure the pitch Use fewer bl...

Страница 9: ...those gas molecules pushing you around Humans have been taking advantage of the energy in the wind for ages Sailboats ancient windmills and their newer cousins the electrical wind turbines have all c...

Страница 10: ...do not use the correct units your calculations will come out wrong The equation for electrical power is shown below P V I P Power in watts V Voltage in volts I Current in amps Example Your MINI Wind T...

Страница 11: ...V R and derive the equation below P V I P V V R P V V R P V2 R If we know the voltage that our turbine is producing and the resistance in the circuit we can determine our power output Examples V 3 vo...

Страница 12: ...fixed pitch more similar to a residential scale turbine With the crimping hub you can manually change pitch As the rotor turns it spins a drive shaft which is connected to a generator The spinning gen...

Страница 13: ...15...

Страница 14: ...800 Transfer Road Suite 30B St Paul MN 55114 www kidwind org Phone 877 917 0079 Fax 208 485 9419 Copyright 2013 All rights reserved...

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