Wind_Energy_Essentials_Lecture_1

Wind_Energy_Essentials_Lecture_1 - Wind Power Technology...

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Wind Power Technology and Liberty ® Wind Turbine Presented by Steve Owens Engineering Program Manager Clipper Windpower, Inc. 9 September 2010 © 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information Agenda 1 2 A Wind Energy Technology Clipper Technology, Evolution of Industry Standard The Clipper Liberty Technology In-depth Major Components Overview B How the Liberty Operates Clipper Liberty Grounding and Lightning Protection System C University of Minnesota Research Turbine Features D 3 Question and Answers 2
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© 2009 Clipper Windpower, Inc. and subsidiaries – Company Proprietary Information Wind Energy Technology 3
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information The Physics of Wind Power Power from the wind = ½ ρ A v3 Cp where: ρ = air density A = swept area of rotor v = wind velocity Cp=efficiency 4
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information Wind Turbine Evolution 750 kW 50m Diameter Turbine 1.5 MW, 71 m Diameter Variable Pitch Variable Speed Efficient Airfoils 5
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© 2009 Clipper Windpower, Inc. and subsidiaries – Company Proprietary Information Clipper Technology: Evolution of Industry Standard 6
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information The Clipper Liberty ® Technology In-depth Overview Weight reduction, comparison of 2.5 MW class turbines The Liberty turbine can be installed with cranes sized for commercial 1.5 MW turbines 7
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information Conventional Double-Fed Variable Speed Turbine 8
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information Full Power Conversion Variable Speed System Variable Speed, Unidirectional Power Flow, Permanent Magnet Synchronous Generator System (Liberty ® 2.5MW Wind Turbine) PM Generators fully decoupled from the grid No VAR compensation needed Simple, compact, and cost- effective Higher efficiency Inverter: PWM, IGBT based high-frequency, full power conversion 9
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information 10 Clipper’s Unidirectional Variable Speed , PMG System ( Clipper patents: US7042110, US7233129, US7339355, US7432686, US7535120 ) Generator Control Units (GCUs) Power Distribution System (PDP)
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information 11 Liberty ® Sub-System Location
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information 12 Hub Interior View and Pitch System Pitch Drives (3) Blade Bearings (3) Battery Back-up Units (3) Blade Pitch Control Unit Limit Switch Assembly
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© 2010 Clipper Windpower, Inc. and Subsidiaries – Company Proprietary Information 13 Pitch Batteries, Emergency Power Unit (EPU) Large battery system designed and tested for operation at -40 C.
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This note was uploaded on 02/26/2011 for the course EE 523 taught by Professor Dr.hopkins during the Spring '11 term at SUNY Buffalo.

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Wind_Energy_Essentials_Lecture_1 - Wind Power Technology...

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