Search found 8249 matches

by Arlo1
Jun 21 2021 2:42pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Also I need to look at why but one of the current sensors keeps calibrating with a big offset. Like 80mv... And when I try that it gets stuck pulsing in drive 0. So I zero my current sensors then it lets it go into drive 2 Do you use the current sensor calibration? In my experience it doesn't help....
by Arlo1
Jun 21 2021 12:23pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Also I need to look at why but one of the current sensors keeps calibrating with a big offset. Like 80mv... And when I try that it gets stuck pulsing in drive 0. So I zero my current sensors then it lets it go into drive 2 Do you use the current sensor calibration? In my experience it doesn't help.
by Arlo1
Jun 21 2021 12:20pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

I just tried this and It doesn't seem to work That is weird! It works or me and has done so 100's of times, start at 6:32 e1yjwl3GE3c The motor I am setting up in this video is just a larger 3 pole pair HSG IMP similar to your aircon IPM in most ways. It won't work until you have a successful test ...
by Arlo1
Jun 21 2021 1:05am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

<r><QUOTE author="kiwifiat" post_id="1656272" time="1621143046" user_id="31725"><s>[quote=kiwifiat post_id=1656272 time=1621143046 user_id=31725]</s> To change the inductance you press capital "L", or resistance capital "R"<br/> <br/> I think you would need more than 1 amp to get an accurate measure...
by Arlo1
Jun 13 2021 4:47pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Can a moderator step in and help fix the OP on this thread. When ever you click the links lebowski posted they don't work. I have a feeling stuff got lost when some work was done on the forum.
by Arlo1
May 20 2021 12:44am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

I find the resistance measures high and I always need to enter in a lower number manually. I tried playing with dead time. But I set it about where it needs to be according to datasheets. How did you get the OEM compressors working with the OEM inverters? Do you meen the little attached inveters? O...
by Arlo1
May 20 2021 12:40am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

This chip is ~ 10a AC max. Its for a HV HVAC with I would love to have 4kw max but the chips I found are ~ 1-2kw max. So 4-6amps ac is likely where I would run it. That should not be a problem for you to find those... https://eu.mouser.com/ProductDetail/ROHM-Semiconductor/BM64377S-VA?qs=DRkmTr78QAR...
by Arlo1
May 16 2021 1:19pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

I find the resistance measures high and I always need to enter in a lower number manually. I tried playing with dead time. But I set it about where it needs to be according to datasheets. How did you get the OEM compressors working with the OEM inverters? Do you meen the little attached inveters? Or...
by Arlo1
May 16 2021 11:21am
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Thanks I tried as much as 10amps but usually the chip dies at 10amps. < Its not really good for that much current.
I tried 6khz and all the way up to 20khz. It shows higher R then it should but that's my experience with this software and IGBTs
by Arlo1
May 15 2021 11:56pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Hi all, Its been a while since I have been here. I am working on a little motor controller to run a HV HVAC compressor using this brain from lebowski. I have an issue when I try to measure inductance I get a ERROR. "Overflow during impedance measurement" I am trying to remember A what cau...
by Arlo1
May 15 2021 7:36pm
Forum: Motor Technology
Topic: Lebowski's motor controller IC, schematic & setup, new v2.A1
Replies: 1841
Views: 241185

Re: Lebowski's motor controller IC, schematic & setup, new v2.A1

Hi all, Its been a while since I have been here. I am working on a little motor controller to run a HV HVAC compressor using this brain from lebowski. I have an issue when I try to measure inductance I get a ERROR. "Overflow during impedance measurement" I am trying to remember A what caus...
by Arlo1
Apr 16 2021 7:59pm
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 592
Views: 122306

Re: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15

I never said the newer EM57 was better or worse. But rather because they shortened the rotor and stator its likely lower power peaks and because its refined it might be more efficient. So knowing that and not having any of the newer leaf motors to test with I chose to stick with the older EM61 as I...
by Arlo1
Apr 15 2021 10:04am
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 592
Views: 122306

Re: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15

I never said the newer EM57 was better or worse. But rather because they shortened the rotor and stator its likely lower power peaks and because its refined it might be more efficient. So knowing that and not having any of the newer leaf motors to test with I chose to stick with the older EM61 as I ...
by Arlo1
Apr 13 2021 2:20pm
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 592
Views: 122306

Re: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15

If someone has a couple Gen 2 motors to send me I will test them and see what I can do for a discount on a controller for that person. I have not tested gen 2 yet but I suspect they will be lower peaks. But maybe higher power density.
by Arlo1
Mar 28 2021 1:34pm
Forum: General Discussion
Topic: Bitcoins
Replies: 356
Views: 65408

Re: Bitcoins

40% of ALL USD has been printed in the last 12 months! Let that sink in! Talk about manipulation..... :pancake: No, don't let it sink in, because as with all angry internet rumors, it's not true. 2019 was supposed to be a scaling back from the over 7 trillion a year for several years, but the $5 tr...
by Arlo1
Mar 26 2021 12:39pm
Forum: General Discussion
Topic: Bitcoins
Replies: 356
Views: 65408

Re: Bitcoins

Bitcoin creates nothing for the energy expended and has no physical presence, so should have no value. Bitcoin as a value system is as easily manipulated as the stock market is. Several years ago it jump in value to the 20K range and suck the wealth from the uneducated before it crashed back down. ...
by Arlo1
Mar 06 2021 12:32pm
Forum: General Discussion
Topic: Electric 450 CRF conversion.
Replies: 15
Views: 1254

Re: Electric 450 CRF conversion.

Latest update.

by Arlo1
Mar 06 2021 10:58am
Forum: General Discussion
Topic: Electric 450 CRF conversion.
Replies: 15
Views: 1254

Re: Electric 450 CRF conversion.

Not sure what happened but the video links were not working. I clicked the edit button then save and they showed back up...

Non the less I have a new video I am putting together today. Getting close.
by Arlo1
Feb 01 2021 6:15pm
Forum: Motor Technology
Topic: Lebowski controller IC 2.B0 source code and (short) explanation
Replies: 52
Views: 5469

Re: Lebowski controller IC 2.B0 source code and (short) explanation

I also spent a lot of time setting the gap and making sure the RLS chip was centered.
by Arlo1
Jan 30 2021 7:19pm
Forum: Battery Technology
Topic: High power cell testing.
Replies: 1
Views: 163

Re: High power cell testing.

[youtube]Bj059xPjwZ8[/youtube]
by Arlo1
Jan 30 2021 7:18pm
Forum: Battery Technology
Topic: High power cell testing.
Replies: 1
Views: 163

High power cell testing.

High everyone. Here is the first 2 videos I have put together on some racing cells I'm testing.

[youtube]zNL5w7UTxlI[/youtube]
by Arlo1
Jan 24 2021 3:17pm
Forum: Motor Technology
Topic: Lebowski controller IC 2.B0 source code and (short) explanation
Replies: 52
Views: 5469

Re: Lebowski controller IC 2.B0 source code and (short) explanation

I found your post back from 2017. Anyway I have my shield connected on single side to casing of the inverter. Both inverter and motor are connected to each other and car chassis via 6mm2 ground straps. I thought that would be enough... tnx Arber I hope you meen the inverter enclosure and not the tr...
by Arlo1
Jan 22 2021 2:34pm
Forum: Motor Technology
Topic: Lebowski controller IC 2.B0 source code and (short) explanation
Replies: 52
Views: 5469

Re: Lebowski controller IC 2.B0 source code and (short) explanation

So what did you use to get better response? Did you just lower winding resistance and add more phase torque? Or did you advance RLS encoder signal? By how much? I tried up to 35deg and there wasnt any improvement. Do i have to use real degrees? That would be 4x35deg = 140deg electrical? Now everyth...
by Arlo1
Jan 18 2021 2:02am
Forum: General Discussion
Topic: Electric 450 CRF conversion.
Replies: 15
Views: 1254

Re: Electric 450 CRF conversion.

thepronghorn wrote:
Jan 16 2021 3:44pm
Hi Thud and Arlo1! Cool dirtbike Arlo1. How much does it weigh?
Thanks man.
About 25 lbs more then a factory 450. I need to weigh it once the 3d printed parts are on it.
by Arlo1
Jan 11 2021 1:56am
Forum: Motor Technology
Topic: Lebowski controller IC 2.B0 source code and (short) explanation
Replies: 52
Views: 5469

Re: Lebowski controller IC 2.B0 source code and (short) explanation

Hi Lebowski I still consider starting torque with my motor rather lame. I have read on the characteristics of IPM motors. As you may know Leaf motor is 8 pole IPM motor. I wanted to ask you if you considered IPM motors with your software? Here there are two torque components. One reactive and one r...