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Session 1633

WIND ENERGY ROTOR SPEED CONTROL

David Westine, Greg Hilker, Fred Jenkins Montana Tech / Ball Aerospace / ASiMI

A grant involving the Department of Energy, the Montana Science and Technology Alliance, the Montana University System, and industry support from the Montana Power Corporation has funded construction of a wind energy test bed at the Rice Ridge Renewable Energy Park. Two small wind machines were planned for the initial phase of the Rice Ridge site shown in Figure 1. Located near Norris, MT which is approximately half way between Butte (Montana Tech) and Bozeman (Montana State University), the Park is designed to rapidly fatigue test fiberglass rotor blades and to procure an accurate strain history until fatigue failure. The first wind machine installed was a Bergey Excel. It has a 23 foot diameter fiberglass three bladed upwind rotor that drives a 10 kilowatt permanent magnet alternator and is mounted on a 60 foot tilt-down lattice tower. The second wind machine uses a Zephyr 22 kilowatt permanent magnet alternator driven by the same type of rotor used on the Bergey machine and is mounted on a 60 foot tilt-down tubular tower.

Figure 1 Rice Ridge Renewable Energy Park

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Hilker, G., & Jenkins, F., & Westine, D. (1998, June), Wind Energy Rotor Speed Control Paper presented at 1998 Annual Conference, Seattle, Washington. 10.18260/1-2--7529