Permanent-magnet alternators offer a substantial reduction in weight and space for aircraft and portable applications and are therefore becoming more attractive. In this paper qualitative remarks are made on the major electrical factors to be considered in beginning the design of this class of machines; these are: voltage regulation, magnet stabilization, rotor design, subtransient reactance, negative sequence reactance, heating, and efficiency.
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Saunders et al. (1951) studied this question.
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