openinverter forum

canadasconvert wrote: ↑Thu Jun 17, 2021 4:52 pm Thanks you very much. I have been following your build over the past year. I have an 02 Boxster 'S'. I will look at Jon Volk's tweaking as well.

Jackk wrote: ↑Wed Jul 14, 2021 9:14 pm What are people using to spin up motor for bench test...I've opted for a 60v power supply...max 5 amp output. The motor wants to spin but barely moves...

What sort of current draw is there to get it to spin? Is it I don't have enough power or am I having encoder issues...

Thanks
.

Lowcoe wrote: ↑Sat Jul 24, 2021 8:08 pm Hello all. Regrettably I have a question. Test fire stalled at getting positive contactor to engage. I’ve read everything many times. Sorry for this but I’m stumped.

I have 4 tesla modules in series for 95 v. Test settings as follows from reading all posts.

Udc nom 95
Occurlim toggled from neg to pos and back
Udc min 0
Udc max 100
Throttle pot : dual channel
Idle mode off
Udc sw 85
Contractor trip : precharge on changed from default

These are listed in order they fall on page. All others are defaults.

Error message reads
[18] stop- over voltage

If nothing is obvious I probably need to pull the motor and check solder contacts as this was my first attempt at fine soldering

Thanks in advance. Apologies for my ignorance

Lowcoe wrote: ↑Sun Jul 25, 2021 8:40 pm Thanks. Never hit save before. Setting to 85 yields no change. Attempted to upload file. All of a sudden WiFi link is unstable/ unreachable. Despite using different computers and different browsers the interface shows the dreaded spinning dots in a roundabout…. Frozen….

Lowcoe wrote: ↑Sun Jul 25, 2021 8:40 pm Thanks. Never hit save before. Setting to 85 yields no change. Attempted to upload file. All of a sudden WiFi link is unstable/ unreachable. Despite using different computers and different browsers the interface shows the dreaded spinning dots in a roundabout…. Frozen….

Clanarn wrote: ↑Fri Aug 27, 2021 9:28 pm Hi,

I ran into some problems with the LDU after a 2mins test driving on the street. I think we did 10kmh maximum. It has worked flawlessly on the bench with 400v. The cooling wasn't working during test drive.

After the test drive car was powered off. 1min after we turned it on again but this time the following accured and has been happening ever since: Press start, main contactor closes for 1 sec, then opens again. Overcurrent is displayed as error.

50% of the time it actually goes in run but when throttle is applied it immediately blows the battery fuse. (400A fuse). Im testing with a 80v battery with a 30a fuse now. No need the blow more 400A fuses than necessary=).

Is there anything else I can do before disassembling motor from inverter to ohm-measure the igbts?

Thanks