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Emulation of a GE 1.5MW wind turbine with a DC motor
Hardy, Trevor David
Hardy, Trevor David
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2010-12
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Electronic dissertations
Electronic dissertations
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Abstract
In order to provide a testing environment for generator control strategies, a wind turbine
emulator was developed. First, a mathematical model was developed for a GE 1.5MW wind
turbine generator based on modeling data provided by GE. Using this data a function
relating maximum power output and wind speed was developed along with a one-mass
model of the turbine. The model was implemented in a software simulation along with
controllers for a DC motor acting as the wind turbine and a dynamometer acting as the
generator. The software simulation was implemented in LabVIEW and read in a data le
containing high sample rate (20 Hz) wind speed data, calculated the optimal power from
that wind speed, and generated control signals for the DC motor and dynamometer.
The e ectiveness of the controller was found by calculating the mean-square error be-
tween the optimal power calculated by the simulation turbine model and the actual power
produced by the DC motor/dynamometer combination. Two 800 second wind speed data
les were used as test inputs for the emulator: a low-speed low-frequency wind pro le and
a turbulent or varying-speed wind pro le. The results of the controller development using
these two wind speeds show that the turbine inertia is a signi cant factor in following the
optimal power output of a wind turbine. The time constant of the generator speed-tracking
function used by GE also plays a signi cant role in how quickly the system can respond to
changes in wind speed.
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Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science.
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Wichita State University
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Copyright Trevor David Hardy, 2010. All rights reserved