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Induction generation micro hydropower system - Help! - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

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 Post subject: Induction generation micro hydropower system - Help!
Posted: Sun Jan 21, 2007 6:17 pm 
Hello Brains Everywhere!

I hope this is the right forum...if not perhaps someone will inform me (not too harshly, I am such a newbie)

I am working on an induction generation microhydro system and the calculations for determining capacitance are eluding me.

I am using an AC 3 phase motor:
Horsepower: 1 1/2
Voltage: 230/460
Hertz: 60
Phase: 3
Full Load Amps: 5/2.5
Usable at 208 Volts: N/A
RPM: 1140

I can eek 10 amps (DC) out of it running at 1200 rpm with 40uf in delta off of the delta connected 230 v input. (after transformer and recitifier magic to produce DC)

Of course I want more amps! But my formula's elude me. I know there is one to determine most efficient capacitance. Thank you in advance for any help you can provide.

 Post subject:
Posted: Mon Jan 22, 2007 6:07 am 
User avatar

Joined: Fri Feb 17, 2006 12:07 pm
Posts: 304
Location: London UK
Hi Kittyprincess
You have landed on a planet where 40 microamps is heavy current 8-)
We mainly dabble with radio, RF, weak electromagnetic fields etc.
However, we probably have a number of electrical engineers present who might help.
I am not sure where the capacitor figures in this unless
a) it is to do with 3 phase to single phase conversion or
b) the rectifier filter capacitor.

Posted  11/12/2012