Search found 80 matches

by ThierryGTLTS
16 Jan 2018, 10:09
Forum: FOC
Topic: VESC FOC for a flywheel application....
Replies: 8
Views: 636

Re: VESC FOC for a flywheel application....

VESC 6 seems to be reliable up to 100krpm.

Ready-to-use Trampa VESC6 is tested and reliable.

See also Stewii test here http://www.electric-skateboard.builders/t/hw6-4-based-esc-escape/37579/219

Have a Nice Day.

Thierry
by ThierryGTLTS
14 Jan 2018, 17:44
Forum: General
Topic: Setting a speed (RPM) using UART
Replies: 3
Views: 99

Re: Setting a speed (RPM) using UART

14 poles = 7 PP "Pole Pair".

571rpm x 7 PP = 3997erpm.

So that's right !
by ThierryGTLTS
11 Jan 2018, 17:50
Forum: Feature Requests
Topic: Out of the box support for AS5048
Replies: 8
Views: 1250

Re: Out of the box support for AS5048

Do you use Digital or PWM output :?: :!:

Thierry
by ThierryGTLTS
10 Jan 2018, 10:21
Forum: FOC
Topic: DRV8302 faults with FOC
Replies: 25
Views: 9532

Re: DRV8302 faults with FOC

Not really.

A very good 2.2µF is better than a bad 4.7µF, the size is important, the larger the better.

See the link given above to check the parameters on the Murata Website.

Other Manufacturers have also this kind of tools.

Have a Nice Day.

Thierry
by ThierryGTLTS
09 Jan 2018, 17:14
Forum: FOC
Topic: DRV8302 faults with FOC
Replies: 25
Views: 9532

Re: DRV8302 faults with FOC

C18 is a local bypass cap of the DRV.

Simply use good quality MLCC as said before.

Thierry
by ThierryGTLTS
09 Jan 2018, 09:32
Forum: FOC
Topic: DRV8302 faults with FOC
Replies: 25
Views: 9532

Re: DRV8302 faults with FOC

The value of the capacitance is related to the current drawn, but some manufacturers use better components than others. But it's very important to use very low ESR capacitance and place them as close as possible to the VESC input. For mine, 200W Low power motor, I've used 1x Panasonic EEU-FS1H102L,1...
by ThierryGTLTS
05 Jan 2018, 08:12
Forum: Hardware Problems
Topic: DRV fault code on FOC detection
Replies: 9
Views: 1311

Re: DRV fault code on FOC detection

OK, it's possible because HW4.12 has only 2 sense resistors.

Thierry
by ThierryGTLTS
04 Jan 2018, 08:42
Forum: Hardware Problems
Topic: DRV fault code on FOC detection
Replies: 9
Views: 1311

Re: DRV fault code on FOC detection

Possible, but the current trough this resistor is so small compared to the source current of the MOSFETs :!:

Thierry
by ThierryGTLTS
03 Jan 2018, 10:33
Forum: Hardware Problems
Topic: DRV fault code on FOC detection
Replies: 9
Views: 1311

Re: DRV fault code on FOC detection

Good Morning, 1. You are right and I don't know why, but I think (hope) that manufacturers use at least 63V caps, although MLCC caps are very robust. 2. Yes it could be better, but I think it's to keep the board as small as possible. 3. I've never understood why this resistor is connected like that....

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