7.5HP Three Phase Motor Conversion

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Senior Member

Joined: 01/09/2006
Location: Australia
Posts: 2127
Posted: 11:06pm 26 Sep 2008      

Hi sparweb,

What purpose do the cooling fins have on the rotor now? They were there on the original design to dissipate the energy produced by current from the squirrel cage and the hysterisis in the iron core. None of that happens with permanent magnets.


BTW I passed up the opportunity of a 5.5kW 720RPM motor. This would probably be good as a conversion.Edited by GWatPE 2008-09-28
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