Fundamentals of Wind Power Plants
Categories: Engineering Lab EquipmentIn modern wind power plants, the power output from the wind is adapted to the changing wind conditions. In the strong wind range, power output is limited to protect the turbine. The rotor blade adjust...
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In modern wind power plants, the power output from the wind is adapted to the changing wind conditions. In the strong wind range, power output is limited to protect the turbine. The rotor blade adjustment serves this purpose. By adjusting the angle, this changes the forces acting on the rotor blade. In the normal wind range, power consumption is optimised by means of variable speed generator systems. It demonstrates a wind power plant with rotor blade adjustment and variable speed generator. The wind power plant stands on a tower in a wind tunnel. The air flow is generated by an adjustable speed fan. A flow straightener ensures consistent and low-turbulence flow. A three-blade rotor drives the generator directly. The rotor blades can be easily replaced. The wind tunnel is closed during the experiments to ensure that the experiments are conducted safely.
Learning Objectives/Experiments
Conversion of kinetic energy into electrical energy
Power adjustment by means of speed adjustment
Power adjustment by means of rotor blade adjustment
Behaviour in the case of oblique flow
Recording of characteristic diagrams
Determination of the power coefficient as a function of the tip-speed ratio and rotor blade adjustment angle
Determination of the power coefficient as a function of the tip-speed ratio and yaw angle
Comparison of different rotor blade shapes
Specification
Wind power plant with rotor blade adjustment
Wind power plant with yaw angle adjustment
Gearless wind power plant with 3-blade rotor
Variable speed generator system
Power regulation by means of rotor blade adjustment
Interchangeable rotor blades
Fan with adjustable speed to generate an air flow
Wind velocity, rotor speed and yaw angle are measured by sensors
Technical data
Wind power plant
Ø rotor: 0,3m
number of rotor blades: 3
rated electrical power: approx. 6W
rated wind velocity: 10m/s
rated speed: 3400min-1
design tip-speed ratio: 4,5
rotor blade adjustment: -5…35°
weight: approx. 1,6kg
nacelle: LxWxH: approx. 270x65x90mm
Generator
rated voltage: 12V
rated current: 2,02A
Wind tunnel
Ø 400mm
Axial fan
max. volumetric flow rate: 6860m3/h
max. power consumption: 1,1kW
Measuring ranges
wind velocity: 1…15m/s
speed: 0…4000min-1
current: ±2,02A
yaw angle: ±40°
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
120V, 60Hz, 1 phase
quick overview :
In modern wind power plants, the power output from the wind is adapted to the changing wind conditions. In the strong wind range, power output is limited to protect the turbine. The rotor blade adjustment serves this purpose. By adjusting the angle, this changes the forces acting on the rotor blade. In the normal wind range, power consumption is optimised by means of variable speed generator systems. It demonstrates a wind power plant with rotor blade adjustment and variable speed generator. The wind power plant stands on a tower in a wind tunnel. The air flow is generated by an adjustable speed fan. A flow straightener ensures consistent and low-turbulence flow. A three-blade rotor drives the generator directly. The rotor blades can be easily replaced. The wind tunnel is closed during the experiments to ensure that the experiments are conducted safely.
Learning Objectives/Experiments
Conversion of kinetic energy into electrical energy
Power adjustment by means of speed adjustment
Power adjustment by means of rotor blade adjustment
Behaviour in the case of oblique flow
Recording of characteristic diagrams
Determination of the power coefficient as a function of the tip-speed ratio and rotor blade adjustment angle
Determination of the power coefficient as a function of the tip-speed ratio and yaw angle
Comparison of different rotor blade shapes
Specification
Wind power plant with rotor blade adjustment
Wind power plant with yaw angle adjustment
Gearless wind power plant with 3-blade rotor
Variable speed generator system
Power regulation by means of rotor blade adjustment
Interchangeable rotor blades
Fan with adjustable speed to generate an air flow
Wind velocity, rotor speed and yaw angle are measured by sensors
Technical data
Wind power plant
Ø rotor: 0,3m
number of rotor blades: 3
rated electrical power: approx. 6W
rated wind velocity: 10m/s
rated speed: 3400min-1
design tip-speed ratio: 4,5
rotor blade adjustment: -5…35°
weight: approx. 1,6kg
nacelle: LxWxH: approx. 270x65x90mm
Generator
rated voltage: 12V
rated current: 2,02A
Wind tunnel
Ø 400mm
Axial fan
max. volumetric flow rate: 6860m3/h
max. power consumption: 1,1kW
Measuring ranges
wind velocity: 1…15m/s
speed: 0…4000min-1
current: ±2,02A
yaw angle: ±40°
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
120V, 60Hz, 1 phase
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