Search found 242 matches

by shaman
Oct 15 2019 6:32pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

@john61ct I like the adapter idea for the ebike crowd. Might be tricky to figure out how to work that in...
Maybe simply JST to "insert common ebike connector here" adapter pigtails?
by shaman
Oct 15 2019 6:13pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

less shitty connectors.JPG
less shitty connectors.JPG (46.97 KiB) Viewed 10 times
Ok. This should do better for connectors in the beta units.
by shaman
Oct 14 2019 9:38am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

thumbnail (2).jpg thumbnail (1).jpg thumbnail (3).jpg Alright. Got it soldered up. Had to fix a couple of stupid mistakes (wrong pinout for crystal, no power to the IMU, ect). I haven’t powered it up yet. I think I’ll leave that for this week when I can get to the lab with a current limiting power ...
by shaman
Oct 10 2019 11:35am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

I'll have the prototyping materials delivered by the end of today. I'm borrowing a reflow oven from a friend for the weekend. Gunna set up the development environment for the VESC firmware/software tomorrow.
by shaman
Oct 10 2019 8:39am
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 204
Views: 15593

Re: Cheap FOCer (VESC 4.12 based design)

The voltage rating is the same as any other VESC 4.12. Abs max of 60V with max operating of 50V(12s).

If you're an esk8er you may have a better time with this forum and this thread.
https://forum.esk8.news/t/re-cheap-foce ... ign/7315/6
by shaman
Oct 09 2019 11:49am
Forum: Motor Technology
Topic: DIY Motor Dyno/load?
Replies: 17
Views: 364

Re: DIY Motor Dyno/load?

This is all good feedback here. My concern is that regen braking alone won't produce enough opposing torque and active braking will be needed. This is fine since any VESC based controller can do this. Also using a big 100A alternator should tank the current and heat pretty well. My initial approach ...
by shaman
Oct 08 2019 7:41pm
Forum: Motor Technology
Topic: DIY Motor Dyno/load?
Replies: 17
Views: 364

Re: DIY Motor Dyno/load?

to be clear I'm not intending to use the alternator as an alternator. I would convert it to a motor that would then oppose the motor under test. I can make the alternator apply braking force via magnetism. Basically adding resistive electrical loads to the alternator would just approach the same thi...
by shaman
Oct 08 2019 5:27pm
Forum: Motor Technology
Topic: DIY Motor Dyno/load?
Replies: 17
Views: 364

Re: DIY Motor Dyno/load?

(May not work for long before overheating though) Yeah I'm trying to avoid friction based approaches for this reason. I need to be able to stress test my controller for a good duration. I've seen professional rigs that are essentially the idea I'm suggesting. I might just go ahead with the biggest ...
by shaman
Oct 08 2019 8:11am
Forum: Motor Technology
Topic: DIY Motor Dyno/load?
Replies: 17
Views: 364

DIY Motor Dyno/load?

I'm looking to construct a crude motor dynamometer/load by utilizing a big cheap expendable motor or motor type thing (like a big converted alternator). I can control the braking force of the load motor with my controller that has variable active braking. The motor being tested will have a separate ...
by shaman
Oct 07 2019 10:55am
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 204
Views: 15593

Re: Cheap FOCer (VESC 4.12 based design)

Did anybody make one them self and how does it perform. Is it much better than VESC 4.12 and is it realy cheaper to make one. Hey sorry I haven't updated this thread in a while. Beta testing took forever to get any results out of the testers. In conclusion, it works ok for under 40A applications an...
by shaman
Oct 05 2019 11:39am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

:!: UPDATE Design review was concluded. Thank you very much @marcos for your design review services! I've learned a great amount from that experience. I've ordered the boards and BOM components to make an initial prototype. The holiday in China slowed down the orders a bit but all should arrive next...
by shaman
Sep 25 2019 3:15pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Yes my controller will do thermal throttling and even thermal shutdown based on the measured temperature of the mosfet case. These thermal thresholds can be set by the user but I would recommend using the default values. Yes the components most likely to take damage from over current or over tempera...
by shaman
Sep 24 2019 11:22am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

This could be in the territory of this TO-247 controller but you will need some really good cooling. What voltage are you running?
by shaman
Sep 09 2019 12:51pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 384
Views: 61442

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?
by shaman
Sep 09 2019 7:01am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Hopefully I have these to market at the end of fourth quarter this year. Maybe just in time to snag the holiday season! So far I've only use my GitHub repository for my open source hardware stuff like the cheap focer. most likely my GitHub will only have the firmware and schematics for my commercial...
by shaman
Sep 08 2019 1:15pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

john61ct wrote:
Sep 08 2019 1:10pm
That is double the Phaserunner ampacity, so hopefully enough
Yeah thanks to using TO-247s. The estimations I'm giving are what I'm hoping for. Empirical testing will reveal what they actually are when I make prototypes.
by shaman
Sep 08 2019 12:30pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

@john61ct my first post answers your voltage question. Features: 15V to 84V operation Max motor phase amps will hopefully be around 150Arms peak and 75Arms continuous for the Serious FOCer. Max battery amps would be similar in the same regard. Amps will determine the torque output of the motor. You'...
by shaman
Sep 08 2019 8:45am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Yes I'll be looking to sell this commercially. I do have a domain and business email setup now but I wouldn't say I have a "brand" built.
by shaman
Sep 06 2019 8:14pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Hey, I am interested in a few of these puppies, what's the state of the project ? Still in design review. I keep coming up with different ways to skin this cat (engineering ADD) and then tossing those designs at @marcos to review. I'm hopefully on the last design revision that I'll do and annoy @ma...
by shaman
Aug 23 2019 10:17pm
Forum: E-Vehicles General Discussion
Topic: Cheap FOCer (VESC 4.12 based design)
Replies: 204
Views: 15593

Re: Cheap FOCer (VESC 4.12 based design)

The TCAN1042H was chosen for it's high bus fault tolerance. There were complaints with the original VESC 4.12 hardware where the MCU would be damaged if the CAN bus wires were suddenly disconnected during operation. The TCAN1042H is my way of mitigating this issue. Also when I started this project i...
by shaman
Aug 16 2019 7:21am
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

@drdrs

Sounds good! There are also different ways of monitoring and data logging VESC based controllers on your phone through Bluetooth. What is your battery voltage? I have a preference for those running 13s to 20s.
by shaman
Aug 15 2019 8:38pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Thanks @BenMoore! I'm working hard on this!
by shaman
Aug 15 2019 2:58pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

The modular nature of the existing code does allow for easy integration of new code. It wouldn't be hard for someone with embedded experience to do all this. I'm pretty rusty at it but I can still modify existing existing code to do my bidding. I would attempt for the non-hardware solutions that wou...
by shaman
Aug 15 2019 12:21pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Ah yes I see what you mean now. Yeah the VESC stuff doesn't nativity support some of the common ebike stuff like PAS/PEDELEC, displays, ect like you were saying. I asked Benjamin if he planned to support this stuff but he doesn't seem interested. The hardware is the there though. Display is probably...
by shaman
Aug 14 2019 3:02pm
Forum: Motor Technology
Topic: Serious FOCer (84V VESC 6 based controller)
Replies: 172
Views: 9872

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

Cool. Really what I'm looking for is field testing in application. The firmware won't need that much modification over the original VESC firmware to be compatible with my hardware. It's just minor tweaks to be compatible with the particular DRV I'm using. Anything else you want to do to the firmware...