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This study presents an improved dynamic average model for brushless excitation system in synchronous generators. The model is based on an efficient voltage-behind-reactance model of the exciter and the average value modelling of rotating rectifier in all rectification modes. The excitation current is assumed to change at a constant rate during the averaging period. The model is validated through comparison of the proposed average model and the experimental results.
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Shahnazari et al. (2010) studied this question.
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