Energy Conversion in a Wind Power Plant ET 220
Energy Conversion in a Wind Power Plant
|Name:||Energy Conversion in a Wind Power Plant|
ET 220 is used to study how kinetic wind energy is converted into electrical energy.
The experimental plant consists of a wind tunnel and a control unit. The wind tunnel contains a wind power plant in laboratory-scale and an axial fan. A rotor and a generator are the core elements of a wind power plant. The control unit includes the control elements for the axial fan, the storage components for the electrical energy and the electrical consumers.
The axial fan generates the air flow required to set the rotor of the wind power plant in rotational motion. A flow straightener ensures the flow is consistent and low in turbulence. A generator converts the rotor's kinetic energy into electrical energy. The electrical energy is fed into a stand-alone system that is not connected to the mains grid. A charge controller in an accumulator provides intermediate storage of the electrical energy. The electrical energy can be used by means of an electrical load. There are two bulbs that can be used as consumers. Optionally, it is also possible to connect an external consumer (such as a heater). There is no provision to feed into a public power grid.
The wind velocity is varied by changing the rotational speed of the fan. The following measurements are captured: wind velocity in front of and behind the rotor, speed of the rotor, voltage and current. The measurements are read off digital displays and can simultaneously be transmitted directly to a PC via USB and analysed there using the software included.
A circuit diagram printed on the control unit makes it easy to assign all components within the isolated network.
Alternatively, in order to conduct experiments under real wind conditions, a larger wind power plant (ET 220.01) can be connected to the control panel. This wind power plant is designed to be set up outside in the open air.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
- conversion of kinetic wind energy into electrical
- function and design of an stand-alone system with
a wind power plant
- determining the power coefficient as a function of
tip speed ratio
- energy balance in a wind power plant
- determining the efficiency of a wind power plant
* Conversion of kinetic wind energy into
* Practical experiments in laboratory scale1
* Software for data acquisition via USB
 converting kinetic wind energy into electrical energy
 laboratory-scale wind power plant, stand-alone operation
 axial fan with continuously variable speed (wind velocity)
 flow straightener for consistent wind conditions
 generator for converting the kinetic energy into electrical energy
 accumulator for storing the electrical energy
 two bulbs as electrical load (consumers)
 measurement of wind velocity in front of and behind the rotor
 measurement of rotational speed of the rotor
 measurement of current and voltage
 digital displays for the measured values
 GUNT software for data acquisition via USB
under Windows Vista or Windows 7
- max. volumetric flow rate: 5m³/s
- max. power: 1,5kW
- diameter: 510mm
- max. output: 60W
- voltage: 12VDC
- max. charging current: 5A
- voltage: 12VDC
- capacity: 8Ah
Electrical load (bulbs)
- voltage: 12VDC
- power: 55W each
- wind velocity: 0,3...50m/s
- speed: 0...3000min-1
- voltage: 0...20VDC
- current: 0...35A
Dimensions and Weight LxWxH: 2610x870x1640mm (wind tunnel)
LxWxH: 1520x790x1760mm (control unit)
Total weight: approx. 380kg Required for Operation 400V, 50/60Hz, 3 phases or 230V, 60Hz, 3 phases Scope of Delivery
1 wind tunnel
1 control unit
1 CD with GUNT software + USB cable
1 set of instructional material
061.22000 ET 220 Energy Conversion in a
Wind Power Plant