Wind turbine testing

Measuring and testing – Dynamometers – Responsive to torque

Reexamination Certificate

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Reexamination Certificate

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07617741

ABSTRACT:
A system and method provide for the effective, real, testing of a wind turbine, especially a vertical axis wind turbine, in a simple, versatile, durable, and relatively cost effective manner. The shaft of a wind turbine (e.g. a VAWT such as a Savonius) is connected to a disc, as is a proportionally controlled disc brake. A torque transducer is connected to the shaft, and an rpm sensor, and a device which collects torque and rpm data from the torque transducer and sensor, are provided. The torque transducer and rpm sensor may be a rotary torque transducer, or the torque transducer may be a load cell operatively positioned a known distant X from the turbine shaft, which known distance X is input into the device which collects torque and rpm data. By effectively applying loads to the proportional disc brake at determined wind speeds, a power curve for the wind turbine can be generated.

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