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Degree

Master of Sciences (Engineering), Case Western Reserve University, EECS - System and Control Engineering, 2011.

Abstract

Airborne wind energy (AWE) systems represent a unique and exciting engineering challenge, positioned as a niche system, bringing wind generation to locations that were otherwise deemed infeasible. This thesis describes the implementation of robust MIMO control to tethered airborne wind energy system. The model focuses on the longitudinal dynamics and incorporates a hybrid blimp-airfoil design, modeled using a hybrid Cartesian-polar coordinate system to capture both the dynamics of the airship and the tether, respectively. It includes a synchronous generator and the aerodynamic model describing the behavior of the blades. The proposed generator utilizes a counter-rotating synchronous design, with mechanical power drawing from two sets of counter-rotating blades, derived from designs utilized in vertical axis wind tower systems. The controller draws on successful, previous applications of sequential MIMO QFT techniques. The controller is finally tested in a full, nonlinear simulator to accomplish system stability and disturbance rejection.

Subject Headings

Energy; Engineering

Keywords

QFT; MIMO; Energy; Wind Turbine; Control Engineering

Committee / Advisors

Mario Garcia-Sanz, PhD (Advisor)
Christos Papachristou, PhD (Committee Member)
Maurice Adams, PhD (Committee Member)

Pages

82p.

Document number: case1308165209
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=case1308165209

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