E.A.G.L.E. system project

The E.A.G.L.E. system:

Electrical Airborne Generator with a Lighter-than-air Eolian system

Project description:

The Control and Energy Systems Center at Case Western Reserve University has developed an international patent for a novel, low-altitude, Airborne Wind Energy (AWE) System: the EAGLE system. It consists of a tethered and controllable flyer supporting an independent, counter-rotating wind power generator. The lift system is a lighter-than-air low-drag airship, equipped with aerodynamic wings and control surfaces to provide longitudinal/lateral control. The flying wind turbine is a variable-speed, aerodynamic rotor system with a counter-rotating direct-drive synchronous generator. The tether serves to both anchor the device and transmit electricity to ground-based power electronics and grid collection. A multi-input multi-output, robust, and nonlinear control system coordinates the flight and energy sub-systems.

The main objective for the EAGLE system is to provide electrical power to locations where traditional means are impossible, mini-grid applications, off-grid combined wind and diesel solutions, rapid deployment to disaster areas, isolated farms, remote areas, cell towers, exploration equipment, backup power for water pumps in remote mines, auxiliary power to ships and offshore drilling platforms, villages in the developing world, etc.

Research areas:

The operational characteristics of the EAGLE system present significant advantages over other existing AWE technologies. The design is currently developing multiple activities in a concurrent and multidisciplinary engineering way, including among others: economics and design optimization, rotor and airship aerodynamics, teather design, turbine design, electrical system and power electronics, dynamic modeling and simulation, flight control system, generation control system, experimentation and validation.

Selection of publications

[1]. Garcia-Sanz,M., White, N. (2010). Airborne wind turbine. US provisional patent. No. 61/387,432.

[2]. Garcia-Sanz,M., White, N. (2010). Non-diagonal MIMO QFT Controller Design for Airborne Wind Energy Systems. 1st Airborne Wind Energy Conference, September 8-10, Stanford University, CA, USA.

[3]. White, N., Tierno, N., Garcia-Sanz,M. (2011). A Novel Approach to Airborne Wind Energy: Design and Modeling. 1st IEEE EnergyTech, May, Cleveland, Ohio, USA.

[4]. Garcia-Sanz,M., White, N., Tierno, N. (2011). A Novel Approach to Airborne Wind Energy: Overview of the EAGLE System Project. 63rd National Aerospace & Electronics Conference, NAECON, July, Dayton, Ohio, USA.

[5]. Garcia-Sanz,M., White, N. (2011). Airborne wind turbine. US provisional patent. No. 61/540,329.

[6]. Tierno, N., White, N., Garcia-Sanz,M. (2011). Longitudinal flight control for a novel airborne wind energy system: robust MIMO control design techniques. ASME International Mechanical Engineering Congress & Exposition, IMECE-2011, November 11-17, Denver, Colorado, USA.

[7]. Garcia-Sanz,M., Houpis,C. (2012). Wind Energy Systems: Control Engineering Design. Book, CRC Press, Taylor & Francis, USA. ISBN: 978-1-4398-2179-4. Book Chapter 19: Airborne wind energy systems.

[8]. Garcia-Sanz,M., White, N., Tierno, N. (2012). Airborne wind energy system. PCT and US provisional patent. PCT / US2012 / 058136

[9]. Wang, F., Sun, S., Pettit, E., White, N., Tierno, N., Adams, M., Garcia-Sanz, M. (2013). A Novel Approach to Airborne Wind Energy: the EAGLE-System. CWRU ShowCase, Cleveland, Ohio, USA.



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