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

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Below are all of the old forum threads, including all the responses to the original posts.

-- Amateur Radio
-- Antennas
-- Circuits & Components
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-- Test & Measurement

 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

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