8
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
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