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WINDTRAINER JUNIOR, EXPERIMENTS ON WIND ENERGY

Wind Trainer Set

EXPERIMENT 1:
Measuring Wind Speed in the Surroundings

Information:

The effect of the wind can be observed in different situations. They can be the pressure exerted by the wind or the airstream on the body, the destructive force of storms or the driving force for sails or rotors.

The power of a wind depends above all on the wind speed. The experiment shall give you an impression of the amount as well as the differences in time and place of this wind speed.

EXPERIMENT 2:
Measuring the Wind Speed of the Blower in Relation to the Potentiometer Position

Information:

The graduation at the adjusting knob of the wind speed control is arbitrary and given in scale units. As a pre-condition for the subsequent experiments, the relation between scale graduation and wind speed is to be determined.

Wind Trainer Package


EXPERIMENT 3:
Measuring the Output Power of a Wind Energy Converter in Relation to the Form of the Wings

Information:

While wind energy units were developed further, different forms came into use for the wings of the converter. This experiment is used to determine the influence of the form of the wings on the operating behaviour.

EXPERIMENT 4:
Measuring the Output Power of a wind Energy Converter in Relation to the Number of wings

Information:

When observing different wind wheels, one can note that, apart from size and type of construction, they also differ by the number of wings used. With the help of this experiment it shall be determined whether there is an optimum number of wings.

Wind Trainer Savonius Rotor

EXPERIMENT 5:
Measuring the Output Power of a Wind Energy Converter in Relation to the Position of the Wings

Information:

A wind energy unit should always work with the best possible efficiency factor, i.e. the maximum possible power should be taken from the wind and converted to electrical energy. The power depends on different factors.

The wind energy unit does not have any influence on the factors of “wind speed” and “Load from the load element”. Modern wind energy units, however, are able to vary the position of their wings in order to optimize their output power. The interdependence between output power and position of the wings shall be examined in this experiment.

EXPERIMENT 6:
Measuring the Current-Voltage Characteristic Curve of a Wind Energy Converter with Constant Rotational Speed

Information:

In order to understand the behaviour of a wind power unit as a voltage source, one has to determine the operational characteristic curve of the source and compare it with the characteristic curves of other voltage sources.

The characteristic curve measured here is the one of a direct current generator in the wind converter, determined for a certain rotational speed of the generator.

EXPERIMENT 7:
Measuring the Current-Voltage Characteristic Curve at the Lift and Resistance Rotor with Constant Wind Speed

Information:

In experiment 6, the characteristic curve of a direct current generator was established, with a constant rotational speed. But during normal operation, the load of a wind energy unit will also have an influence on the rotational speed of the rotor. With the help of this experiment, it shall be determined what effects this might have on operational behaviour. Lift as well as resistance rotors are examined.

EXPERIMENT 8:
Measuring the Output Power of a Wind Energy Converter in Relation to Wind Speed

Information:

The amount of wind speed is decisive for the yield of a wind energy unit. In this experiment the output power of a wind energy converter in relation to wind speed shall be examined.

EXPERIMENT 9:
Measuring the Output Power at the Savonius Rotor with and without a Gap

Information:
Savonius rotors are constructed with or without an air gap between the half shells. In the following experiment, the influence of the air gap on the performance of the generator shall be examined.

EXPERIMENT 10:
Measuring the Current-Voltage Characteristic Curve at the Savonius Rotor with Constant Wind Speed information
:

As in Experiment 10 for the lift and resistance rotor, this experiment shall help to clarify the operational behaviour of the Savonius generator with constant wind speed and variable load resistance.

EXPERIMENT 11:
Charging a GoldCap Capacitator/Accumulator with a Wind Energy Converter

Information:
If a wind energy unit in isolated operation is to supply a group of loads, then a storage for the electrical energy is needed on account of the unsteady winds and the varying power demand. In the following experiment, an accumulator or, for loads with a very low energy demand, a “GoldCap” capacitator is used for this purpose.

EXPERIMENT 12:
Discharging a Gold Cap Capacitator/Accumulator

Information:
How does a “GoldCap” capacitator behave with a load?

EXPERIMENT 13:
Setting up an Isolated System

Information:

If a wind energy converter is connected to an energy storage and a load, one obtains an isolated system in its simplest form.

Depending on irradiation, state of charge of the storage element and operation of the load, different current flows and current strengths are produced in the system.

 
 
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