Search found 14 matches

by e-ghia
Tue, 01 Dec 2009, 19:36
Forum: Technical and conversion discussion
Topic: Electric Ghia: ABB VFD bench test and more
Replies: 4
Views: 1008

Electric Ghia: ABB VFD bench test and more

Hello all! This is a continuation of sorts of this thread . I am so grateful to all those in these AEVA forums that have weighed in on various topics regarding our vehicle. Now we have some more progress to share. Yes, we still have a lot to do (including a lot of wire management), but please feel f...
by e-ghia
Sat, 31 Oct 2009, 19:05
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

The albright contactor is $78. 125A 80-96V 12W consumption. The Kilovac contactor is ~$76. 500A 320-900V 1.7W consumption & no BEMF. No competition really. Which "little" contactors did you have in mind Woody? I really like the lower consumption of the Kilovac, but we'd need 12 of them = $$$ http:/...
by e-ghia
Fri, 30 Oct 2009, 21:39
Forum: Technical and conversion discussion
Topic: Cutting teeth (from a flywheel)
Replies: 3
Views: 851

Cutting teeth (from a flywheel)

We machined ours on a lathe. Took off the teeth and machined the front face flat to make a nice fit with our taper-lock hub. It's hard to tell in the photo, but... http://farm3.static.flickr.com/2465/4038543439_06bb4ac780_b.jpg It's the part between the clutch (right) and the profile plate (left). A...
by e-ghia
Fri, 30 Oct 2009, 20:46
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Sorry for the late reply, but we've been rather busy with our mechanical installation. Ok, here's an actual photo of the business end of the drive. There are 3 terminals: R-, UDC+/R+ and UDC-. But that's not to say that we know what to do with them... http://forums.aeva.asn.au/smileys/smiley5.gif ht...
by e-ghia
Sat, 19 Sep 2009, 17:58
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Well, we went with a servomotor after all. We met with an engineer at SEW a couple weeks ago, and we came home with this. http://forums.aeva.asn.au/smileys/smiley4.gif http://farm4.static.flickr.com/3431/3902957944_2065d45cd7.jpg It's the CFM112L rated at 157.5 Nm of max torque which the engineers t...
by e-ghia
Mon, 31 Aug 2009, 17:38
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Hi Johny & woody, Yes, absolutely keeping the gearbox as it contains the differential. Pulled it out a couple weeks ago for upcoming installation. Right again woody! http://forums.aeva.asn.au/smileys/smiley4.gif I hope to get some torque curves from the SEW engineer, and I'll share them here. But do...
by e-ghia
Mon, 31 Aug 2009, 13:46
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

By the way, all of the motor suggestions are awesome. When we spoke to ABB, we specifically asked about the 131-003 and 131-316 of the IPM line of motors (EFF1). Also, here's some info about the original ICE: Tmax = 105Nm @ 2800 rpm (or 31kW). Pmax = 39.5kW @ 4200 rpm (or 90Nm). So we estimate that ...
by e-ghia
Mon, 31 Aug 2009, 12:14
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Awesome input as always. Thanks woody, Richo, et al. Also check the length you can fit in the engine bay as this usu limits what you can put in. Yes, length is a big issue for us. We have about 550mm max space available, and this includes shaft length. Even if we went with the CM1.7, we would have t...
by e-ghia
Sat, 29 Aug 2009, 17:05
Forum: Batteries, charging, management and monitoring
Topic: 624V of SLA chargers
Replies: 38
Views: 5095

624V of SLA chargers

Fantastic input as always! Thanks guys. The design consists of 13 x 48V modules separated by contactors, each with its own charger. As a4x4kiwi suggested, we'll probably go with the 3A chargers. They are half the price and rated at 180W. 13*180 = 2340W which still may trip the breaker. The 20A break...
by e-ghia
Fri, 28 Aug 2009, 15:47
Forum: Batteries, charging, management and monitoring
Topic: 624V of SLA chargers
Replies: 38
Views: 5095

624V of SLA chargers

Hey guys, once again I seek advice from the AC high-voltage gurus. I mentioned in another post that we are engineering students, but what I should have said was mechanical engineering students. http://forums.aeva.asn.au/smileys/smiley5.gif We're ordering 52 SLA Greensavers from China, and we'll prob...
by e-ghia
Fri, 28 Aug 2009, 15:28
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

I have received my VFD from ABB: the ACS800-U1 70-5. It's rated at 55kW and 96A (138A max). But I still have no motor... The folks at ABB were rather convinced that an ACIM was not the best choice for me, and suggested that I check out their HDP servomotors . Does anyone have any knowledge or experi...
by e-ghia
Wed, 17 Jun 2009, 14:27
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

I hate to be a pest, but let me see if I’m closer now. ABB has a 15 kW in a 132 frame: model # 131 316. If I order this as “HSE” (as did weber and coulomb) where the S denotes the 240 delta or 400 star, then the nominal power is 15*400/230 = 26kW continuous and about 78 kW peak. I would then choose ...
by e-ghia
Tue, 16 Jun 2009, 21:26
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Whew, that was a loooooooong week without the forum. Thanks for sharing your expertise guys. As most of my EV research has gone for the past year, the answers I seek only make me ask more questions. First, I'll answer some of yours. I didn't quite understand the CD of the car - was that 0.65? No, it...
by e-ghia
Wed, 03 Jun 2009, 22:45
Forum: Electric motors and controllers
Topic: ABB motor and VFD selection
Replies: 74
Views: 16536

ABB motor and VFD selection

Let me first say that I’ve read the epic thread, AC motors, multipoles, torque, and the expertise of the users of this forum is phenomenal. That’s not to say that I understood it all, but I’ll be reading it again soon. I’m new to the forum and part of a group of four students that is converting a VW...