Search found 318 matches

by marcos
Dec 07 2019 10:51pm
Forum: Motor Technology
Topic: Max erpm and field wakening
Replies: 8
Views: 341

Re: Max erpm and field wakening

Different conceps there * Max eRPM refers to the base frequency of the motor drive. If controller states 60kerpm then its PWM can generate 1kHz sinewaves while keeping the motor under control. * Max switching freq refers to the transistor switching freq, it could be 15, 18, 21kHz for example. Note h...
by marcos
Nov 22 2019 10:15am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

The Axiom part starts at 13:15 in the video. Soooo good to see you together on the stage, deep respect and congrats! The whole thing was an awesome meetup, and it was great to have the chance to finally have a team meeting, here are 4 glasses for maxi that didn't make it. 20191116_134321.jpg Btw I ...
by marcos
Nov 03 2019 10:26pm
Forum: Motor Technology
Topic: Sensorless From Standstill (SFS) explained
Replies: 24
Views: 1673

Re: Sensorless From Standstill (SFS) explained

That's a very awesome and valuable contribution Lebowski, thanks!! I'm not sure the STM32F4 can handle this non-center-alignement phase shift, I think it requires the coordination of many many timers. In any case, I sent the tip to benjamin vedder, we was considering this kind of signal injection so...
by marcos
Oct 28 2019 7:22am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

I thought VESC already supports multiple VESC with multiple motors over CAN? Is that not what Vedder describes as Arrays of VESCs or are we limited to an array of two VESCs only in Version 6? How do they implement e.g. 4wd skateboard with 4 VESC & 4 Motors? Are they simply running 4 motors off two ...
by marcos
Oct 22 2019 9:31am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

Does this controller have the ability to daisy chain, so if you had 4 motors, and 4 controllers, you could connect the throttle to one acting as the master controller, which would send data to the other 3? Everything is possible. The only limit is your imagination and your time. And the flash memor...
by marcos
Oct 16 2019 4:54pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

I watched one of Arlin's videos on the Axiom he's using in his Honda and he suggests there might be Torque Vectoring possible/coming? I assume Traction Control is already possible through VESC software anyway, but are there plans for Torque Vectoring to be available or is Arlin developing this just...
by marcos
Sep 30 2019 5:14pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

would like to ask also any update on the pcb that would let us adapt let say already built powerstage from some inverter to the axiom logic board? No updates in that regard. I have the kicad files ready to upload, they didn't change since we defined the general layout and pinout. I just never made ...
by marcos
Sep 30 2019 9:48am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

Hello MArcos, could you please provide some updates on what is going on with Axiom? any updates on ACIM support? Hi Shaggy, These last few days we were making the last strides in the hackaday contest, it closes today. One of the requirements is to make a video so we are spending the bootstrapping s...
by marcos
Sep 25 2019 5:08am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

Yes! Right after we finish validation and we have an enclosure made.
by marcos
Sep 10 2019 4:39pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

Into the finals!

https://prize.supplyframe.com

Wooot! Happy happy!

Now back to work. Dang SPI driver speedup is taking me ages to get working.
by marcos
Sep 09 2019 8:57pm
Forum: Motor Technology
Topic: most power dense reliable esc available today
Replies: 4
Views: 287

Re: most power dense reliable esc available today

An old leaf motor can reach 200kw for a few seconds.
by marcos
Sep 09 2019 4:55pm
Forum: Motor Technology
Topic: most power dense reliable esc available today
Replies: 4
Views: 287

Re: most power dense reliable esc available today

It would be useful to also specify the current/voltage range you need. There are compact 200kW drives out there, but its worthless if you need 10kW.
by marcos
Sep 09 2019 4:40pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

@marcos good to see this released! One question though. Why use a digital isolator + non-isolated CAN transceiver instead of an isolated CAN transceiver like the ISO1042? Main reason is sourceability, if that is a word. I prefer to avoid part obsolescence and keep supply chain flexible. ISO1050 and...
by marcos
Aug 20 2019 9:28am
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 577
Views: 94727

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

Ugh, I'm sorry if that came the wrong way at that time. If you ever would like to give this hardware a try I'd happy to give you a walk through the coding workflow, at least the workflow I use which of course may not be the best. The code is not ready to support paid options as it hasn't been a prio...
by marcos
Aug 19 2019 4:54pm
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 577
Views: 94727

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

I think I asked Lebowski if he wanted to try his algorithms in our board, but we code in C and he codes in assembler.
I agree it would be cool, and we also have the fpga available for custom functionalities that he could monetize as optional features.
by marcos
Aug 18 2019 6:39am
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 577
Views: 94727

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

Its conceptually the same as KV (rpm per volt). It spins the motor and measure BEMF to calculate it. KV and mWb only differ by a conversion constant.
by marcos
Aug 15 2019 7:46am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

I also watch batteries ... I realized one thing if you maky it yourself it will be very expensive (battery pack) ... but i found battery pack is really cheap from ( Kia Optima Hyundai Sonata Hybrid Battery ) ... cost approximately 350-500$ Yes, keep watching. From time to time some amazing deals sh...
by marcos
Aug 06 2019 3:49pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 218
Views: 16092

Re: Serious FOCer (84V VESC 6 based controller)

You want to know exactly which enclosure you are going to use, with exact dimensions, 3D model, availability, and cost, and make sure you include the post-processing it needs for connector cutouts. This process can unveil some challenges I see like how to expose the JST connectors, or how to screw t...
by marcos
Jul 30 2019 5:49pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

There are no pullups in the schematic for the HALL sensors. Maybe your sensors are open drain and need that? The overvoltage is on purpose, its there so you can't use the default mcconf hardcoded in the firmware. Go to general->advanced and set up a reasonable max input voltage for your system, and ...
by marcos
Jul 29 2019 9:20pm
Forum: Motor Technology
Topic: BESC - beefed up VESC motor controller for high power ebikes
Replies: 138
Views: 15151

Re: BESC - beefed up VESC motor controller for high power ebikes

I second zombiess, his suggestion is a proven part, the TI chip doesnt cover short circuit protection, and zombiess/highhopes thread is something you should read and be very aware of. You may want to keep your gate driver selection, but at least you should make it go through the same level of testin...
by marcos
Jul 23 2019 5:12pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

I hope the race went well Abricosvw, I just wanted to highlight here a couple of updates: VESC Tool now can connect directly to a CANbus network See details here: https://hackaday.io/project/164932-axiom-100kw-motor-controller/log/165890-new-feature-gui-canbus-support https://cdn.hackaday.io/images/...
by marcos
Jul 08 2019 12:04pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 218
Views: 16092

Re: Serious FOCer (84V VESC 6 based controller)

4 layers has several benefits. I'm used to low volume runs and a good 2 layer layout takes like 10 times more than a good 4 layer layout, this is a win in both engineering cost and time to market. Its just simpler to route, and saves yourself headaches when you have to go through an EMC chamber. I h...
by marcos
Jul 05 2019 5:32pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: VESC controller: Check Axiom datasheet!

what do you think when we can start use IPM motor ... You can give it a try anytime without Max Torque Per Amp. The motor should spin, it just doesn't use the reluctance torque. If you feel brave you can build the VESC Tool guI and use a firmware built with MTPA support from the testing branch. I c...
by marcos
Jul 01 2019 5:51pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 402
Views: 71425

Re: Axiom: a 100kW+ motor controller

Designing a new powerstage is a huge effort, you are likely on your own there as I'm swamped with developing and consulting regarding Axiom controllers. I completly understand you are busy, its just my own enthusiasm to build this. I already have ton of experience in electronics and access to prope...