hi everyone, I have my car running, I am very happy and grateful for the help of this forum and all of you. I am in the tuning stage and I would like to understand well how the different parameters work. It's an ACIM of 15Kw, 200V, 2 pole pairs. My battery bank now it's 150V. According to what I rea...

MattsAwesomeStuff wrote: ↑Sat Dec 10, 2022 11:53 pm I think it should work the way you've done it, based on the description.

Also, you could just flip your wires. A pot (or hall effect) typically has 3, one ground/reference and then either end of the travel. One goes up, one goes down.

It's a Hall sensor. I can't flip cables.

I would add a single 5K pot to regen input. This to vary your regen in case of winter. I would not use an active pot on the brake pedal since it presents a complication when making turns and shifting. From my use of colvern linear 5K pot under the brake i can say it can be schratched and develops a...

A potentiometer is enough purely for regen adjust. The additional use of brake_in is locking out throttle while it is pressed and cancelling cruise control. Thank you very much! Another question, can I have the potentiometer reading inverted? In the vehicle I am assembling the sensor gives me less ...

hi,

is the "brake in" signal from the brake pedal swith required for regenerative brake operation?
Or is the potentiometer enough?

thanks

Checking deadtime is a good place to start. Edit - deadtime and pwm frequency are the obvious parameters affecting power dissipation. The slower the device switching the higher the deadtime needed and the greater the switching losses. With higher switching losses a lower pwm frequency can be benefi...

Hi! I already have my controller running in the car. It works very well and smoothly. The problem I have is that the power stage gets too hot. I am in the stage of tuning the motor/controller values, I would appreciate if you could help me to define which parameter is the one that can influence more...

The standard firmware will detect that it's running on a blue pill and change the pinmap accordingly https://openinverter.org/forum/viewtopic.php?t=220 (please read to the end) Thank you johu, I already have it running with firm V5.20.R-2 (it is the latest version with "sine" precompiled ...

Hi!

I am migrating a 50V golf cart controller to openinverter with a bluepill.
The original controller was driving the main contactor with a PWM signal at 70% since it is 36V.
Is there any possibility to configure that in openinverter?

Thank you very much

Hi! sorry if I'm asking questions already answered, but as much as I read hundreds of posts on the forum I can't figure out a couple of things regarding the different firmwares needed to get our openinverter running. I'm a hardware guy so I'm a little bit slow with firmwares. 1_ We use a STM32, whic...

Hi! I am repairing a golf cart brushless motor controller with dead microcontroller. My solution is openinverter! I have a bluepill and all hardware of original controller its working. My experience with openinverter its on a full STM32 dedicated board. Is there a precompiled firm for bluepill? I am...

I figured long time ago 60 slot optical sensor is optimal also for lower speed. We are talking about ACIM motors yes? See here how i made my first sensor when my AB OEM sensor failed :). https://mazdamx3ev.wordpress.com/2015/07/03/enkoder-senzor/ When i was satisfied with performance i used a lot o...

On board there is a roughly 60 kHz low pass for the encoder signal that's why the 3600 teeth version topped out. You can increase the cutoff frequency but in general I'd roll with a low pulse encoder like the one you made, since precision is not needed. Hi! Yes, I tuned that low pass filter acordin...

Hello everyone, I have my controller with HW board V1.2 working very well on bench with a 15Kw three phase induction motor. The problem I have is in the choice of encoder technology. Initially I started with a capacitive type encoder (CUI INC AMT10) but I could not solve the noise introduced by the ...

Hi! I have mi controller working and installed on my car, I´ts works and car can move smothly, but it has less power was I expected. I need help with generated V/hz curve. My motor is a 95Vrms 4poles 50Hz 1430rpm 2,2Kw and my DC bus is 120V. On wiki saids: fweak is the frequency at which the full po...

arber333 wrote: ↑Tue Sep 29, 2020 8:59 pm There is one more suspect. Thin phase wires. What is the dimension of your phase wires?

Yes, the motor cables are thin for now because I'm just doing no-load tests.

Hello everyone, I have a question for a long time and I can't get any information about it on the internet.
basically that's what the title says,
what is the benefit of using a resolver instead of a digital encoder?

from your first post it seems you are connecting only single channel encoder mode. To use that you need to take off board some resistors and caps and connect channel PA2 back onto PA6. Both signals complement the final picture inside main chip. I just reread this part. I don't understand what you a...

Maybe you have trouble with filtering. Can you scope the signals A and B on your PCB? behind the RC filter? Yes, I see perfect my signals A and B on the oscilloscope. Hm... from your first post it seems you are connecting only single channel encoder mode. To use that you need to take off board some...

When I said tested with differents PPR, I configure DIP switches of encoder respectivly.
Insist, when I test on "start 2" o "manual" mode the speed value on web interface is correct.
But not on "start 1" mode.

Thanks for your reply arber333. I keep testing. In "start 2" mode the encoder reads correctly, I turn the motor at 300rpm, the pulses on the oscilloscope are correct and I read 300rpm on the web interface. But when I go to "start 1" mode the motor turns at maximum 6rpm. If I chan...

Ok, I found out that the problem is the encoder reading. I'm using a CUI INC capactive type encoder, model AMT10. I tried different options of pulses per revolution and I can't get the correct speed reading, looking at the pulses in the oscilloscope I know that the encoder works well. The reading I ...

Hello every one, my name is Alejandro, and is my first time posting on forum. I have a controller build with a "STM32 V3 mini" development board and a IGBT UPS power unit. All hardware is working fine, I have already calibrated current sensors, encoder and voltage meter. On start 2 mode mo...