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Abstract
The strategy developed also addresses a system start-up problem that prevents the generator from accelerating to an uncontrollable operating point in high wind speed conditions. This is accomplished with voltage and current sensors only, and does not require direct measurements of wind speed or generator. The proposed method is applied to a small wind turbine system consisting of a permanent magnet synchronous generator (PMSG) and a simple transducer topology. Experimental and simulation results are included to demonstrate the performance of the proposed method. The document also shows the limitations of using stator driving force to estimate rotor speed in a PMSG connected to a rectifier, due to large d-axis current at high load.
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