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A new approach in sensor-less vector control of stand-alone doubly fed induction generator

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Abstract

Stand-alone operation of electrical power generators is of increasing interest, because of geographical or financial limitations and reliability issues. This paper presents a simple and innovative approach for sensor-less vector control of stand-alone Doubly Fed Induction generators (DFIG). Unlike grid-connected DFIG, accurate estimation of speed/position of the rotor is crucial for frequency control of stand-alone DFIG. As a new work, an open-loop flux and speed estimator have been developed for the DFIG application. The advantage of a developed speed/angle estimator is its independency of rotor current sensors, the feature that enhances system robustness. Such as other off-line observers, developed estimators are sensitive to machine parameters. To overcome this problem, particle-swarm-optimization has been practically implemented in a digital-signal-processor for parameter identification. Both simulation and experimental results prove the acceptable performance of the proposed approach, especially in preserving the amplitude and frequency of sinusoidal load voltage.

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  1. University of Guilan, Rasht, Iran

    M. Pourjafari & E. Fallah Choolabi

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  1. M. Pourjafari
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  2. E. Fallah Choolabi
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Pourjafari, M., Fallah Choolabi, E. A new approach in sensor-less vector control of stand-alone doubly fed induction generator. Electr Eng 105, 1783–1796 (2023). https://doi.org/10.1007/s00202-023-01760-3

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