Maximizing Alternator Efficiency: Does RPM Affect Permanent Magnet Alternators?

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Permanent magnet alternator efficiency does increase with RPM, as higher speeds generally lead to greater output due to increased magnetic field interaction. Smaller magnets at high RPM can potentially outperform larger magnets at lower RPM, depending on design and application. The efficiency gain is primarily linked to the speed of rotation rather than the size of the magnets. However, factors such as heat generation and mechanical stress at high speeds must also be considered. Overall, optimizing RPM is crucial for maximizing the efficiency of permanent magnet alternators.
wmingin
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Hello Wizards!
Does permanent magnet alternator efficiency increase with RPM?
Would an alternator with small magnets turning at high speed be more efficient than
and alternator with large magnets turning at low speed.

Frequency of output is not a concern, ( converting to dc )

Thanks for reading.
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