ssage-
From: EV [mailto:[hidden email]
<http:///user/SendEmail.jtp?type=node&node=4676196&i=0>] On Behalf Of Joe
via EV
Sent: Friday, June 12, 2015 12:10 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] DIY EV air conditioning? 3 phase motors
Just some info on the 2nd gen pr
prohibited.
-Original Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Joe via EV
Sent: Friday, June 12, 2015 12:10 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] DIY EV air conditioning? 3 phase motors
Just some info on the 2nd gen prius a/c compressors that I&#x
Just some info on the 2nd gen prius a/c compressors that I've either read
about or figured out from playing with them:
They're 6 pole motors, so 3 electrical cycles per one physical cycle. I've
seen specs that say max speed is 6000 rpm (100 Hz), so that'd be 300 Hz
output from the inverter. I di
Robert Bruninga via EV wrote:
3 phase 60 Hz AC synchronous motors seem to start and run just fine
on fixed 60 Hz frequency, why does one need to ramp up and have precise
feedback of rotor position therefore frequency and phase to make a
DC controller?
Synchronous motors are rare on fixed 60Hz A
ne 11, 2015 5:08 PM
To: Joe; Electric Vehicle Discussion List
Subject: Re: [EVDL] DIY EV air conditioning?
Did realize the Prius was permanent magnet. The TECO VFD might not work at
all driving a PM. :-( Other OEM EV compressors might not be PM.
Residential HVAC compressors are definitely not PM
You would need 12k BTU if you were cooling the whole cabin, but I'm talking
about cooling individual passengers. With conduction, not convection.
Whole different ballgame. The concept must have some merit, or seat
heaters wouldn't be commonplace. Besides astronauts and pilots, cooled
seats and/o
Phoenix?
What about a swamp cooler? They are extremely low power, for the amount of
cooling you get. They won't work in Atlanta, but Phoenix would be ideal!
I have one, new in box, designed for cooling tractor-trailer cabs. I got it for
Veggie Van Gogh (http://www.VeggieVanGogh.com) but never g
I recall seeing a few seat covers over the past couple of decades that used
the 12v plug in the do both heating and cooling. most were less than $250,
if I recall.
-Tom
On Wed, Jun 10, 2015 at 2:44 PM, Ben Goren via EV wrote:
> So, I can imagine all sorts of ways that one might run air conditio
Hi Chris,
There are a lot of products like that for general aviation. Very useful for
taxiing on hot Tarmac. :)
Cheers, Peter
Sent from my iPhone
> On Jun 11, 2015, at 21:35, Chris Tromley via EV wrote:
>
> If A/C demands aren't great, I've wondered if you could get away with a
> cooler, s
nt: Thursday, June 11, 2015 2:49 PM
Subject: Re: [EVDL] DIY EV air conditioning?
Ben,
Roland is running his A/C as "regenative braking" so he does not use battery
power - some of the time.
Cor van de Water
Chief Scientist
Proxim Wireless
office +1 408 383 7626 Skype: cor_van_de_w
Did realize the Prius was permanent magnet. The TECO VFD might not work
at all driving a PM. :-(
Other OEM EV compressors might not be PM. Residential HVAC compressors
are definitely not PM, but they tend to be rather bulky.
Bill D.
On 6/11/2015 11:54 AM, Joe via EV wrote:
Regarding an off-t
message is
prohibited.
-Original Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Ben Goren via EV
Sent: Thursday, June 11, 2015 1:33 PM
To: Roland; Electric Vehicle Discussion List
Subject: Re: [EVDL] DIY EV air conditioning?
I'm not sure I follow by "not use bat
>
> - Original Message -
>
> From: Bill Dube via EV<mailto:ev@lists.evdl.org>
>
> To: Chris Tromley<mailto:ctrom...@gmail.com> ; Electric Vehicle Discussion
> List<mailto:ev@lists.evdl.org>
>
> Sent: Thursday, June 11, 2015 8:03 AM
>
> Subje
Thanks for the suggestions!
I don't think I'm up to hacking together a controller. Hacking a communication
protocol _might_ be a possibility.
I have thought about the idea of a dedicated electric motor to run the
compressor...and trading inefficiency for simplicity might be something I'd go
fo
Regarding an off-the-shelf VFD for a prius compressor, it would have to be
one that can control permanent magnet synchronous motors with interior
magnets. The TECO drive linked appears to only work in sensorless mode for
induction motors. Open loop V/f would probably make a prius compressor
spin,
.
Roland
- Original Message -
From: Bill Dube via EV<mailto:ev@lists.evdl.org>
To: Chris Tromley<mailto:ctrom...@gmail.com> ; Electric Vehicle Discussion
List<mailto:ev@lists.evdl.org>
Sent: Thursday, June 11, 2015 8:03 AM
Subject: Re: [EVDL] DIY EV air co
You would need a lot of ice, hundreds of pounds, to provide the
refrigeration needed.
12,000 BTU/hr is the rating of a typical car air conditioning unit. This
is literally equivalent to one ton (2000 lbs) of ice per day.
"Hacking" some OEM EV air conditionaing, like from a Prius, is likely
the
If A/C demands aren't great, I've wondered if you could get away with a
cooler, some ice packs, some water to carry the "cold" and a circulation
pump to run the water through a tubing network installed in a seat cover.
I know it sounds crude, but that's how NASA cools astronauts. Almost all
the en
Had anyone tried a leaf heat pump?
On June 10, 2015 5:29:35 PM CDT, Joe via EV wrote:
>I'm on my 4th iteration of air-conditioning scheme. The latest is
>building
>a controller to run a 2nd gen prius a/c compressor. I have a thread
>going
>on DIYecar here:
>http://www.diyelectriccar.com/forums/s
Goren via EV<mailto:ev@lists.evdl.org>
To: Electric Vehicle Discussion List<mailto:ev@lists.evdl.org>
Sent: Wednesday, June 10, 2015 3:44 PM
Subject: [EVDL] DIY EV air conditioning?
So, I can imagine all sorts of ways that one might run air conditioning in an
electric vehicle,
I'm on my 4th iteration of air-conditioning scheme. The latest is building
a controller to run a 2nd gen prius a/c compressor. I have a thread going
on DIYecar here:
http://www.diyelectriccar.com/forums/showthread.php/diy-controller-04-09-prius-c-140346.html
It's worked well so far at up to 105F
So, I can imagine all sorts of ways that one might run air conditioning in an
electric vehicle, but I'm sure others have actually tried and done different
ways and likely figured out the best general approach.
Any of those others reading these words and care to point me in a good
direction?
Th
22 matches
Mail list logo
