Search found 295 matches

by Stiive
Tue, 07 May 2013, 15:29
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 94
Views: 21091

AC electric motor rewinding for EV use

For the reason of there not being a better EV controller that we can afford, We are stuck with the big Curtis for now. So we do not advocate the use of the small/multi turn factory wires. They will not handle the Curtis' low voltage/ high current scheme without severe damage. Have you look at just ...
by Stiive
Tue, 30 Apr 2013, 04:24
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 94
Views: 21091

AC electric motor rewinding for EV use

: )     The Curtis controller has no voltage parameter settings that can be changed. The voltage/current relationship is fixed by whatever the controller "sees" during the Auto-run portion of the initial optimization routing performed when a new motor is installed to the controller. Motor RPM is de...
by Stiive
Mon, 29 Apr 2013, 16:45
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 94
Views: 21091

AC electric motor rewinding for EV use

I have driven my car with the new motor. It had great bottom end torque, a decent current draw under cruise, but was limited to 3,100RPMs. This winding used 1/6th the slot worth of 18 Ga. wires and wound two times around each pole, times the three phases filled the slot. A second winding type was n...
by Stiive
Mon, 29 Apr 2013, 16:32
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 94
Views: 21091

AC electric motor rewinding for EV use

I am running 36cells for a pack voltage of 122. I have wound several motors and have tried 30 volts RMS, 60 RMS and 70RMS volts. I have the best overall at winding the motor for 70RMS, but the Curtis controller will not give much above that. On the 1238R Curtis, the RMS is determined by how the con...
by Stiive
Mon, 29 Apr 2013, 04:47
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 94
Views: 21091

AC electric motor rewinding for EV use

What voltage are you running?
by Stiive
Sat, 20 Apr 2013, 16:07
Forum: General EV Discussion
Topic: Renault Fluence ZE
Replies: 0
Views: 352

Renault Fluence ZE

Surprised to see the Fluence ZE only has a 70kW motor. http://www.renault-ze.com/au-au/gamme-voitures-electriques-renault-z.e./fluence-z.e./presentation-80398.html I got the chance to drive one yesterday and it definitely had some balls - so i thought i'd check the motor specs out. Obviously it is g...
by Stiive
Thu, 28 Feb 2013, 22:32
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Hi Stiive. I think we're on the same side. I think maybe I misread what you were trying to say with the Aristotle/Galileo example, and then you misread my response. I don't think I'm in the "camp" you thought I was. I'm on the side of critical thinking and testing by experiment and I assume you are...
by Stiive
Thu, 28 Feb 2013, 21:56
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

I think you really ought to stop now Stiive. I'm quite sure that you would be surprised at the engineering prowess (and qualifications) of some of the folk that you are offending - just stop, OK? WOW, I really don't think I was being insulting, but regardless, I've deleted my comments. No offense i...
by Stiive
Thu, 28 Feb 2013, 20:49
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Image
by Stiive
Thu, 28 Feb 2013, 20:42
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Image
by Stiive
Thu, 28 Feb 2013, 16:53
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Stiive wrote: Just like Aristotle had an in-depth knowledge of physics, which largely was accepted until Galileo 1,800 years later.
Weberian physics?


PS, not having a go at ya mate. Just a bit of fun Image
by Stiive
Thu, 28 Feb 2013, 16:47
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Image
by Stiive
Thu, 28 Feb 2013, 15:25
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

perhaps there's some clause information we don't know about. Just read they say there is a 30x concentration! Perhaps they have some mirrors set up to reflect more than 30*10m^2 worth of sunlight onto the thing (or in a lab shining a 30x concentrated beam)... Then it wouldn't be 100% efficient... i...
by Stiive
Thu, 28 Feb 2013, 15:16
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

If it had 20 times the output of standard flat panels, for the same area, or even if it had only 7 times, it would be more than 100% efficient. I missed (and still missing) the part where it claimed to be 20x better. But I haven't read the article in detail From a skim, it does say they use 1/4 of ...
by Stiive
Wed, 27 Feb 2013, 15:24
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

excerpt from video (1min 24s) "....Producing significantly more DC than flat static panels. This electricity is then conditioned by the power electronics and transferred to the electromagnets in the base ring. As these spin past the electromagnets in the stator ring, AC power is produced, like a sta...
by Stiive
Wed, 27 Feb 2013, 15:19
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

"The Sentinel system uses a quarter of the silicon when compared to a similar 1kW array of traditional flat solar panels and an external solar inverter isn't required as the system outputs AC power."

Yeh it does... Apparently...
by Stiive
Wed, 27 Feb 2013, 14:34
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

"Additionally, V3Solar claims the strobe-light effect on the solar cells hyper-excites the electrons, creating more electricity in the process." Uh-oh! Sounds good but a bit of hype creeping in there. Yeh thats what i thought... sounds like a over unity sort of claim, but watch the video and it exp...
by Stiive
Wed, 27 Feb 2013, 03:06
Forum: The Lounge
Topic: Spinning Solar Cell
Replies: 28
Views: 2032

Spinning Solar Cell

Looks good. Hopefully it's claims can be replicated on a commercial scale

Article

by Stiive
Tue, 26 Feb 2013, 21:20
Forum: Electric motors and controllers
Topic: AC Controller Survey
Replies: 10
Views: 1737

AC Controller Survey

Oh and BTW, some people seem to have the DMOC working quite well.

Check out this guys channel
http://www.youtube.com/user/wolftronixa ... ture=watch
by Stiive
Tue, 26 Feb 2013, 20:32
Forum: Electric motors and controllers
Topic: AC Controller Survey
Replies: 10
Views: 1737

AC Controller Survey

Ah sorry Matt, didn't realise it was you.
Forgot your AEVA forum name
by Stiive
Tue, 26 Feb 2013, 15:04
Forum: Electric motors and controllers
Topic: AC Controller Survey
Replies: 10
Views: 1737

AC Controller Survey

Also, the Tritium's use FOC and word from James is the WS200 could be capable of 400A RMS peak with 'extensive testing' - But best to assume is 300A for the moment.

A 400ARMS WS200 would suit the Siemens motor perfectly and get the full 100kW out of it.
by Stiive
Tue, 26 Feb 2013, 14:57
Forum: Electric motors and controllers
Topic: AC Controller Survey
Replies: 10
Views: 1737

AC Controller Survey

Ah, non editable. Here's the details of the current version Electronic Cont. Power (kVA): ? Dyno testing TBA Peak Power (kVA): ~200kVA Min Voltage (VDC): Programmable (50V?) Max Voltage (VDC): 450VDC Cont. Current (A rms): ? Dyno testing TBA Max Current (A rms): ~400A RMS Features Control: True torq...
by Stiive
Tue, 26 Feb 2013, 14:31
Forum: Electric motors and controllers
Topic: AC Controller Survey
Replies: 10
Views: 1737

AC Controller Survey

So what AC Controllers are out there? What are you using, what have you seen used? Would you recommend it? DIY, commercial, re-purposed VFDs... Sure, the AC controller has to match the motor (in my case a Siemens 1PV5315: 300VDC, 400A peak), but with your help, I'd like to collate the knowledge of ...
by Stiive
Wed, 30 Jan 2013, 20:51
Forum: Members Machines
Topic: Richo's AC Handi Sports
Replies: 84
Views: 10348

Richo's AC Handi Sports

Richo wrote: Sensored DTC with SVM.


Cool... why'd you choose this over FOC? I'm thinking of porting soon.

Richo wrote:Sorry I can't bring myself to use V/F with lookup tables even tho it may work in this application.


Don't blame you...
by Stiive
Wed, 30 Jan 2013, 14:24
Forum: Members Machines
Topic: Richo's AC Handi Sports
Replies: 84
Views: 10348

Richo's AC Handi Sports

A shot of my motor next to the incomplete controller. For the prototype I am putting it in a steel enclosure. http://forums.aeva.asn.au/uploads/274/Handi_Motor_Controller.JPG The orange cable under it is the 50mm^2 battery cable. The silver cable is the VFD motor controller to motor cable. It's a 3...