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conference paper
Double-fed asynchronous motor-generator equipped with a 3-level VSI cascade
2004
Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting
The present paper investigates the complete regulation strategy for a large double-fed asynchronous motor-generator equipped with a 3-level VSI cascade for applications mainly in the field of pumped storage plant. For the present application, the specific problem of the DC link capacitors voltage balancing is investigated. Also a sensorless method for the determination of the rotor angle is proposed and verified in practice. Measurements of the system performed on a laboratory low power system are discussed and compared to simulations.
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