Search found 881 matches

by HighHopes
Oct 10 2020 8:17pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

You don't need to pay someone to design one, we provided all the schematics and bill of materials (which means you can go part by part to see where the costs come from) so the design is already there for free. The IGBT, capacitors, bussing, enclosure, heatsink, connectors, sensors.. these things cos...
by HighHopes
Oct 10 2020 8:46am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Where can I purchase one of these motor controller for my EV project Nowhere yet. We're still testing and validating. And I am still designing the enclosure. We work on AXIOM in between contract work which explains why its been a long time to fruition. But its coming :) There's only one more techni...
by HighHopes
Sep 28 2020 10:00pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

AXIOM was designed for 800V absolute max DC voltage (will require a 1200V rated cap which we are in the process of custom making but haven't actually received it yet). this means the applied voltage is lower because you have to leave room for transients and normal voltage overages and stuff. what ex...
by HighHopes
Sep 18 2020 8:00pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Have you had any beta testers successfully integrate an Axiom board with unique inverter electronics? ahh.. you're wondering if someone took the power electronics from typical EV. removed the brain board and inserted AXIOM? no, none of our customers have done this that i know of as they are all usi...
by HighHopes
Sep 17 2020 9:27pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

i am not aware. my mechanical skillz are near 0.. i am making the first draft as best as i can before it goes to our mech expert for cleanup. feel free to give me more advice :)
by HighHopes
Sep 17 2020 7:32pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

1. see block diagram on first page 2. i think the design started before AMC1311 existed. its hard to believe but i posted the original embodiment of this design i think back in 2012?? something like that. if i remember, my original design used differential op-amps in a special configuration to manag...
by HighHopes
Sep 13 2020 7:56am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

designing the enclosure with integrated cooling today. its not ideal because i'm dealing with constraints.. shown below is the bottom where the coolant flows (there will be a waterproof coverplate not shown). the otherside is where the IGBT modules sit, that side will have a flatness spec. this is a...
by HighHopes
Sep 13 2020 7:50am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Is there a contact for the makers of this MC? Tried email and facebook but no reply. hi Andy, i think its you i have been talking with by email but just incase its another "andy" and/or someone else has same questions.. in our message board signature is a link to a website that that has a "Contact ...
by HighHopes
Aug 23 2020 4:23pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Arlin just passed 150kW at only 350Vdc, ~95% efficiency per motor drive. guess the new dyno coupler works :)

:bolt:
by HighHopes
Aug 03 2020 8:10pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

its listed in AXIOM datasheet
by HighHopes
Jul 31 2020 5:33pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Out of curiosity, how does Axiom get the cold plates specified for operation?
quick answer... we know the power dissipation and where that power is dissipated. we know the capability of the cold plate to reject heat when fluid has a certain flow rate and temperature. and poof.. just like that.
by HighHopes
Jun 23 2020 7:19am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Do you know how many people have been making derivative works of your schematic? we've never bothered to look. just keep in mind, we spend about a year coding up VESC modifications necessary to make the real high performance stuff and not all of those modifications were pushed to the open platform....
by HighHopes
Jun 23 2020 7:10am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Understood that solving this would be a large task or a large check. Makes me think about the possibility though. its a hard task but not impossible. there are MANY ways to do parameter estimation, benjamin chose one that worked for him. but there are many other ways, perhaps one of these other way...
by HighHopes
Jun 22 2020 12:49pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

Try calling some of the sellers on Ebay, many are most likely junk yards and would ship to you. Best to find one with two and make them an offer. I see plenty of them for sale. i've tried that before. $1200 CAD + 668$ shipping. its why i started all this motor controller stuff with induction motors...
by HighHopes
Jun 21 2020 6:13pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

WFLab - i am so jealous. its not so easy for me to get leaf motors and i need two so i can mirror Arlin's test bed and pump out tested AXIOM controllers. i like living in Canada.. but me thinks i'll have to make a trip to the USA to find leaf motors, but with COVID its been on a delay and arlin has ...
by HighHopes
Jun 12 2020 10:48am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

there is a 100% chance this MTPA feature will make it to VESC (@marcos) :wink: actually, its more like 99% as we don't actually decide what gets included. we send to benjamin all of our basic stuff that is needed for the bigger power and most of the stuff needed for higher performance. but its up to...
by HighHopes
Jun 12 2020 7:08am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

maximum torque per amp (MTPA) now fully implemented. makes a very obvious improvement in power production for IPM motors. this first version was very simply implemented. it basically takes the user's total torque command and splits it up into two components, a "direct" current and a "quadrature curr...
by HighHopes
May 07 2020 6:01pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

An oscillation on the phase angle combined with looking at the 1st and 2nd harmonic (in the motor currents) of this oscillation?
nothing that complicated, just textbook stuff. its meant to be open source afterall ;)
by HighHopes
May 07 2020 5:56pm
Forum: Motor Technology
Topic: Lebowski controller IC 2.B0 source code and (short) explanation
Replies: 36
Views: 2979

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

the block where you add/subtract Id & Iq, i have not seen that but its hard to say i have read so many thousands of papers each describing their own way of doing FOC. there are a lot of variations, usually with some trade off you gain this but sacrifice that. in military/commercial aircraft you're g...
by HighHopes
May 06 2020 9:59pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

i have not worked a lot with IPM motors. a little with axial flux. but mostly SPM and separately excited. so this whole salience thing, the details of making it ACTUALLY work is mostly new to me. we were using a fixed 45deg angle just for quick test and got really good results, better than was expec...
by HighHopes
May 05 2020 10:44pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

last week we passed 100kW at 350V on the dyno. @lewbowski, you're right about 45deg being a pretty decent default value for timing adjust.

arlo gives a once over tour in the video: https://youtu.be/hYvuRghNGTc

Major Milestone achieved. :bigthumb:
by HighHopes
Nov 02 2019 9:35am
Forum: Motor Technology
Topic: Sensorless From Standstill (SFS) explained
Replies: 24
Views: 3664

Re: Sensorless From Standstill (SFS) explained

now that's a nice post! i was there when the aerospace engineers developed and patented realistic methods of doing zero start full torque sensorless (before electric vehicles were a "thing"). i've read pretty much all the patents and was involved in some of the development. using negative sequence c...
by HighHopes
Oct 31 2019 8:47pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 476
Views: 108826

Re: Axiom: a 100kW+ motor controller

the beauty of all this hockinsk, is that its open source. so if people want to try it out using the default code that already supports most of what you're talking about then you're starting from a good spot. a super enthusiastic DIY'r could in theory set up a multi-motor EV, multi Axioms, one gas pe...
by HighHopes
Sep 01 2019 5:54am
Forum: Motor Technology
Topic: Hi power inverter for Nissan leaf motor. Dyno's 302.3hp p15
Replies: 580
Views: 112194

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

Lebowski wrote:
Sep 01 2019 3:52am
Man, 250c, they'll be empty in 14 seconds !
he only needs 9.2s :)
by HighHopes
Aug 12 2019 8:35pm
Forum: Motor Technology
Topic: BESC - beefed up VESC motor controller for high power ebikes
Replies: 159
Views: 31494

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

Peters.. before you get bent out of shape about ringing on a double pulse test. put both diff probes on ONE location, say IGBT gate. then repeat the double pulse. notice you still get ringing? that's basically your probe leads.. it represents the portion of the double pulse scope test results that a...