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Regen Braking / Braking Current under Different Voltages

Submitted by kimjungyeop on Tue, 2020-02-25 23:47

Hello!

I have been noticing that under lower voltages, the amount of resistance given by the same motor under a lower voltage is a lot less than the resistance given under a higher voltage. Is this normal behavior? Or should the resistance under regen braking be the same as long as the motor do not reach the set braking current?

Thanks,

Steve

Incorrect Batt Current Readings in FOC but not in BLDC

Submitted by vadicus on Tue, 2020-02-25 20:06

This issue was mentioned in a few other threads together with other issues but I would like to have a thread dedicated specifically to the battery current readings in FOC mode. Hopefully, we can get to the bottom of it.

I am running my custom HW described here: https://vesc-project.com/node/1477

However, a few people reported similar observations on other HW including the original VESC HW such as 75/300.

Very Large hub motor detection (QSMOTOR 3000W hub)

Submitted by shaman on Thu, 2020-02-20 01:26

Was curious if there is anything special to achieve proper motor detection in both BLDC and FOC modes for large hub motors such as the one linked below?

 

http://www.cnqsmotor.com/en/article_read/QSMOTOR%2016inch%20273%202000w%20-%208000w%20Electric%20Motorcycle%20DC%20Hub%20Motor%20for%20motorcycle/831.html

6 Phase Motor - How to Drive it?

Submitted by vitormhenrique on Wed, 2020-02-19 05:47

Hello Everyone,

I'm looking to get a motor from a onewheel, and drive it with VESC, but apparently those motors have 6 phase windings.

Being one offset of the other one.... I read a little bit online and it looks like you can drive those motors with two controllers, is that correct? anyone has tried this?

The motor has hall sensors, if I can use two vesc's, how would I use the same sensor on two VESC's?

Best regards,

 

Vitor Henrique 

Questions: VESC Android APP And ADC Throttle

Submitted by BLeaCH on Mon, 2020-02-17 20:31

Hi Everyone!

i have some questions, i hope that is the correct place to ask

 

i'm building a ebike, and i'm using an ADC throttle to say to VESC to accelerate, this is only one way throttle, and i want to configure to accelerate and brake, so....

there is a way to config the throttle to the first half of the throttle be to accelerate and the other halt to brake?

 

Firmware V4.00 field oriented control motor jerk but wont spin

Submitted by jordanlow on Thu, 2020-02-13 14:41

In older firmware up to 3.65 the motor runs well in sensor less control. But at firmware V4 the motor jerk but does not spin. It does spin when perform motor profiling. So as a result, I revert the firmware version back to V3.65 and continue using it. The motor is a U8 170KV which has 21 pole pairs from Tmotor. Will it be possible that the inductance of the motor is too high which cause it to work abnormal. Out of few times result i collected it shows a winding resistance of 58mohm and 47uH.

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