Search found 31 matches

by bigdaveakers
May 13 2019 6:30am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Is there any way of increasing the voltage excitation to the resolver? It seems to be around 2.7V which means the sin and cos inputs are significantly less. Have you tried different frequencies? Maybe it resonates at a particular frequency making the sin cos signals larger. The EXC signal is 12V, b...
by bigdaveakers
May 12 2019 11:14am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Is there any way of increasing the voltage excitation to the resolver? It seems to be around 2.7V which means the sin and cos inputs are significantly less.
by bigdaveakers
May 11 2019 1:49pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Ah found it, I was expecting to only look for resolver settings and not encoder :)
by bigdaveakers
May 11 2019 1:45pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

It seems logical that somewhere I need to tell the controller that there are 10 poles and 4 rotors? Yes, the controller needs to know the offset angle and the ratio of the encoder, its under the encoder tab. This would be the ratio. If your motor has 10 poles and the resolver is x4 it would create ...
by bigdaveakers
May 11 2019 12:46pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

It seems logical that somewhere I need to tell the controller that there are 10 poles and 4 rotors?
by bigdaveakers
May 11 2019 12:33pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

I tried looking for the numbers printed on the resolver with no real joy.

TS2239N484E102
C14742

However, this page shows that I appear to have a resolver with a 4x designation - could this be an issue?

https://www.eminebea.com/en/product/rot ... 1vrx.shtml
by bigdaveakers
May 11 2019 10:06am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Finally got chance to have a play with my board.....I wont post pictures as it is a bit 'lashed up' at the moment. My main concern is to get the resolver working. Sadly it seems to be misbehaving :( resolversnap.jpg If the rotor is still it reads around 180 degrees, if I move it I get the trace show...
by bigdaveakers
Apr 15 2019 4:46am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

I now have no faults - needed a HV supply to clear the fault...…….now I need one with some grunt so I can actually do something with it!
by bigdaveakers
Apr 14 2019 10:25am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Marcos, are you able to provide details on the fault codes? I have the fault light flashing when I power up the board and I am keen to debug. I have connected the throttle and I am able to calibrate it and see the throttle input working in the VESC input wizard. I haven't been out to my motor to che...
by bigdaveakers
Apr 13 2019 9:38am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

Just working through step by step to try and get it all connected to the Mitsubishi drivers. I have 2 5V connections and a 5VA connection (according to the screen on the Mitsubishi controller) I can see a 5V available on the rev D board, but what is the 5VA about?! Is there any way I can check the r...
by bigdaveakers
Apr 13 2019 8:26am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

revdc.jpg
revdc.jpg (364.18 KiB) Viewed 6786 times
by bigdaveakers
Apr 13 2019 8:11am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Axiom hardware released!

I appear to have a rev D board mating with a Mitsubishi Outlander PHEV rear motor controller!
by bigdaveakers
Feb 15 2019 2:43pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

as i know the magnets are inside the rotor ...and this is so that if they break then they remain inside the rotor in the same position ...the only difference is their geometric arrangement ...Tesla on model 3 uses Halbach Magnet style So this seems to suggest it is likely to be an IPM...…. Thanks!
by bigdaveakers
Feb 06 2019 8:23am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

marcos wrote:
Feb 05 2019 4:48pm

I can't see the magnets in that rotor, so I have no clue if they are inside or in the surface :/
Taking the other end off the motor is tricky, as there is a great big magnet holding it in place! Any tips?
by bigdaveakers
Feb 05 2019 12:20pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

Got round to taking the motor out of the car - one day it will be going back in...….. :D lift.jpg In order to get a glimpse at the rotor I removed the inspection cover for the resolver. Looks like there is opportunity to change the timing :twisted: resolver.jpg I am hoping that through this little w...
by bigdaveakers
Feb 03 2019 4:51am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

What does the rotor look like though? If it's an IPM motor with reluctance torque, controlling it will be different to a conventional motor with surface mounted magnets. Yeah, we need to know that. I'm confident I can provide support for IPM in a reasonable timeframe. Not sure how to perform parame...
by bigdaveakers
Feb 02 2019 3:12pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

marcos wrote:
Feb 02 2019 3:01pm
Resolver interface is programmable (with resistors) to 10, 12, 15 and 20kHz. Excitation amplitude must be configured (also with resistors) such that the IC receives 3.15Vpp +-27%. Should work!
It is almost like you have thought of everything :lol:
by bigdaveakers
Feb 02 2019 2:30pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

Had a bit more of a probe after picking my motor up :bigthumb:

The resolver output from the Mitsubishi board to the motor is 5V and at 10kHz.

What is achievable with the controller board?
by bigdaveakers
Jan 31 2019 5:31pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

marcos wrote:
Jan 31 2019 5:00pm
Sounds good,
PWM Cathode OPTO 1
PWM Cathode OPTO 2
Do you you know which one commands the TOP IGBT and which one commands the BOTTOM IGBT?
What is the definition of TOP and BOTTOM?

The emitters of OPTO 2,4,6 are connected to the low DC......I assume that this is BOTTOM?
by bigdaveakers
Jan 31 2019 4:46pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

Looks like "CA" pin is connected to GND on both gate drivers, and "AN" pin has a pulldown resistor (R46 and R47) plus a capacitor to GND (C52 and C53). Its the same schematic, but someone swapped the R and C footprints between the gate drivers. I am maybe a little obsessive with my desire for consi...
by bigdaveakers
Jan 31 2019 4:40pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

For those interested, I have mapped out the connectors on the igbt driver board - a couple of unknowns and use at your own risk! Header.jpg PWM Cathode OPTO 1 5VA PWM Cathode OPTO 3 FAULT (NOTE: all 6 OPTO outputs connected together) PWM Cathode OPTO 5 UVLO (NOTE: all 6 OPTO outputs connected togeth...
by bigdaveakers
Jan 31 2019 3:29pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

While manually trying to trace the IGBT driver board I think I found an oooopsie by Median/Mitsubishi. I am not an electronics engineer by any stretch but I do have an eye for detail! First of all would it have been beyond the with of man to make the layout the same for each of the six 34JT optos??!...
by bigdaveakers
Jan 31 2019 2:25pm
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

What is the motor like? I assume it's an IPM like most other japanese EVs but I can't find pictures or details for this motor. Take a look here for a basic picture http://mmc-manuals.ru/manuals/outlander_iii/online/Service_Manual_2013/img/54/ACC06200AB00ENG.pdf It is basically the same as the one u...
by bigdaveakers
Jan 31 2019 6:44am
Forum: Motor Technology
Topic: Axiom: a 100kW+ motor controller
Replies: 414
Views: 83520

Re: VESC-controller: Firmware released!

Got to love Google......
34JTcircuit.jpg
34JTcircuit.jpg (42.28 KiB) Viewed 1852 times