power curve measurements of locally manufactured … curve measurements of locally manufactured...

Power Curve Measurements of Locally Manufactured Small Wind Turbines 8th PhD Seminar on Wind Energy in Europe

Jon Sumanik-Leary & Hugh Piggott 12th – 14th September 2012 Supervisors: Dr Rob Howell (Mechanical Engineering) Dr Aidan While (Town and Regional Planning)

Department Of Mechanical Engineering.

12th-14th September 2012 | 8th PhD Seminar on Wind Energy in Europe | Jon Sumanik-Leary | [email protected]

• Introduction to Scoraig, Hugh Piggott and locally manufactured technology

• Aims • Site conditions • Technical specifications • Results

Outline


Scoraig


Scoraig.


Hugh Piggott.


Getting by on Scoraig.


Local manufacture.


• Accurately measure performance – 1.2-4m diameter

• Characterise variation inherent in locally manufactured technology – Identify root causes of discrepancies in power

performance

• First data set: – 1.8m Glasshouse turbine

Aims.


• Mean wind speed: 4.97m/s

Site wind conditions.


Wind power system.

Blades Number 3 Profile Based on Aquila

Material Wood (Siberian Larch) Generator

Generator topology Axial flux permanent magnet

Permanent magnet material Neodymium-iron-boron (NdFeB)

Nominal voltage 12V

Rotor disc material Steel, polyester/fiberglass composite

Stator material Polyester No. coils 6 No. poles 8

Resistance 0.412Ω Tower

Height 7.7m Type Tilt-up guyed

Material Tubular steel Electrical System

Battery type 4x450Ah Rolls S-600 6V

Battery configuration 12V - 2 series pairs paralleled

Charge controller Tristar 45 in diversion mode Inverter Studer Joker 800W


Data logging system.

Variable Sensor Wind speed NRG Max40

Wind direction Davis Pro-D Temperature Zener diode

Rotational speed AC frequency

Current LEM-HT-200-SBD hall effect probe

Voltage Data logger powered

directly from Glasshouse battery bank


• Existing wind power system

• Data logging equipment

Wiring diagram.


• 18,835 samples reduced to 13,438

Filtering the data.


Final power curve.

0

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350

0 2 4 6 8 10 12 14 16 18 20

Nor

mal

ised

Pow

er (W

)

Wind Speed (m/s)

0

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100

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0 2 4 6 8 10 12 14 16 18 20

Nor

mal

ised

Pow

er (W

)

Wind Speed (m/s)


Annual energy production.

0

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1400

0 2 4 6 8 10 12

Ener

gy (k

Wh)

Wind Speed (m/s)

AEP AEPdesign


Analysis.

0

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1000

0

50

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0 5 10 15 20 25

No.

Dat

a Po

ints

Nor

mal

ised

Pow

er (W

)

Wind Speed (m/s)

Power Curve Hosman 2012 No. Data Points Min. No. Data Points for IEC 61400-12-1


Power coefficient.

0

0.1

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0.4

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1

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0 5 10 15 20 25

Cp

Nor

mal

ised

Pow

er (W

)

Wind Speed (m/s)

Power Curve Cp Scatter Cp Hosman 2012

0

0.1

0.2

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1

0

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0 5 10 15 20 25

Cp

Nor

mal

ised

Pow

er (W

)

Wind Speed (m/s)


Questions?

• Thanks for listening!


• 1. Piggott, H., A Wind Turbine Recipe Book 2009, Scoraig, Scotland: Scoraig Wind Electric.

• 2. IEC, Wind Turbines, in Part 12-1: Power Performance Measurements of Electricity Producing Wind Turbines 2005.

• 3. Hosman, N., Performance Analysis and Improvement of a Small Locally Produced Wind Turbine for Developing Countries, in Faculty of Aerospace Engineering 2012, TU Delft.

References.

power curve measurements of locally manufactured … curve measurements of locally manufactured...

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