Ken,
My prop shaft driven brushless alternator puts out 20 KW single phase split 120/240 (household style). The rectifiers are on the rotor. They rectify the ac picked up by the exciter rotor from the exciter stator and use the resulting DC to magnetize the main rotor to produce ac electricity in the main stators as the rotor rotates which is the 120/240 output. As a motor I plan to apply ac to the main stators producing a rotating magnetic field. I will then feed ac to the exciter to create a steady magnetic field in the rotor so that the rotating magnetic field the stators are making then drag the rotor around, rotating the shaft as a motor. Norm S/V Bandersnatch Lying Julington Creek 30 07.695N 081 38.484W > [Original Message] > From: Ken James <[EMAIL PROTECTED]> > To: <[email protected]> > Date: 7/28/2008 11:21:05 PM > Subject: Re: [Liveaboard] Get Home Motor/Generator > > As a brushless alternator, it puts out AC which is > then rectified by semiconductors, passive VS > active rectification almost certainly that is to > say it uses some form of diode to do the > rectification. > > But as a motor you must switch the polarity as the > rotor turns, so you must 'commutate', a function > normally done by brushes or a sensing circuit with > switches of some sort. -Ken > _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
