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Permanent Magnet Alternator/generator

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Permanent Magnet Alternator/generator

Post by michael on Fri Jun 13 2014, 20:19

Any one out there know where I can buy a genuine permanent magnet generator rated at about three to six KW 230/240 v ac at fifty hz. I emailed George at utterpower[who has what I want but at 60hz] but he said he had no connections to acquire one although he has them on back order for the American market . I realise most of them are made in China , but I am some what reticent to part with a decent wedge to what may possibly be a company that may make the transaction prolonged or result in an unsatisfactory outcome, any information very much appreciated, yours in anticipation Michael, Nottingham.

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Post by DeepBass9 on Sat Feb 14 2015, 13:18

Surely difference between 50hz and 60hz is just engine rpm which you can fix by adjusting the governer or drive belts?

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Re: Permanent Magnet Alternator/generator

Post by oldgoat on Mon Feb 23 2015, 12:43

The 300 or 600 rpm difference depending on whether it is 2 or 4 pole makes a big difference to the output voltage and because it is a permag generator you can't adjust the field to lift the voltage.

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Re: Permanent Magnet Alternator/generator

Post by woody on Mon Feb 23 2015, 15:05

You'd need a huge permanent magnet to generate 3KW plus. Impossibly large I'd suggest.

That's why alternators and dynamos use electro-magnets for the field coils.

And, as old goat says, you wouldn't be able to adjust the field magnetic flux to control output.

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Re: Permanent Magnet Alternator/generator

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