01-07-2010, 01:09 PM
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#191 (permalink)
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PaulH
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
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Holy crap! How much would something like that cost to ship?!
Field oriented control should allow for pretty DC like behavior I think. I've just been so busy. I haven't prioritized it, but it's what I want to work on the most! Makes me mad!
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01-12-2010, 10:30 AM
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#192 (permalink)
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EcoModding Lurker
Join Date: Jan 2010
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HI there
and a Happy new year to you all
I have finaly read the hole tread and have a question
can the the controller also be used for a brushless HUB motor
is the PWM signals more complicated to an AC motor
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01-12-2010, 10:50 AM
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#194 (permalink)
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needs more cowbell
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8kw for $200 isn't so great. I think this 3 phase controller based on the module
http://www.irf.com/product-info/data...m136-1060b.pdf
is geared for AC induction. Of course almost anything is possible with a microcontroller.
FYI, I am currently investigating a PMAC (BLDC) specific controller however, based on the atmega for use with ETEC brushless types and alternator conversions. Will start a thread soon, as soon as I get around to a prototype, but I really want to electrify a few smaller vehicles (scooter, motorcycle).
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WINDMILLS DO NOT WORK THAT WAY!!!
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01-12-2010, 10:59 AM
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#195 (permalink)
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EcoModding Lurker
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sounds great "dcb" I have invested in 2 Brushless hubs for converting a tre weeler, and need a controller or 2 for driving them they are rated 10Kw boost 20Kw would be nice to have a controller to drive them
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01-24-2010, 01:48 PM
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#196 (permalink)
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Master EcoModder
Join Date: Sep 2009
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Just thinking out loud here but what about adapting a prius transmission as an ac ev motor? isnt it a sealed unit with two ac motors and a diff? .......or mabey i'm just loosing it......
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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01-24-2010, 10:22 PM
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#197 (permalink)
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Master EcoModder
Join Date: Sep 2008
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Quote:
Originally Posted by jackbauer
Just thinking out loud here but what about adapting a prius transmission as an ac ev motor? isnt it a sealed unit with two ac motors and a diff? .......or mabey i'm just loosing it......
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Possible, but you might as well just buy a complete Prius and modify it.
I'm currently taking a class about electronic motor controls, so I should be able to offer some good advice later on.
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If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...
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01-27-2010, 01:04 PM
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#198 (permalink)
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EcoModding Lurker
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Regarding Benelson's quote of Jan 7th: 4 pole shaded AC motors run at 1800 rpm unloaded, and about 1725 rpm at full load. Everyone most likely knows this. We can buy slightly used AC motors on the internet for $500.00. Ditto. But not one 60 hertz motor has any expectation of staying together at any higher speed. Or, for how long? I would think anyone going into AC drive should find a motor rated at at least 5000 rpm, to avoid the constant shifting, or, EXPECT to shift. Kindest regards to all, williamson
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01-27-2010, 01:28 PM
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#199 (permalink)
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EV test pilot
Join Date: Jan 2008
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True,
The only guy I know who has a homebuilt AC electric car is using a more or less "standard" AC motor.
He shifts through all the gears.
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01-29-2010, 05:05 PM
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#200 (permalink)
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24.27 lbs per gallon Co2
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Unicorn - '12 Nissan Versa 1.8S hatch 90 day: 31.9 mpg (US)
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An AC motor like that would match nicely to the transmission of a Saturn Sx1 series car
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