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by ThierryGTLTS
10 Jan 2018, 10:21
Forum: FOC
Topic: DRV8302 faults with FOC
Replies: 27
Views: 21462

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: 27
Views: 21462

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: 27
Views: 21462

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: 4270

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: 4270

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: 4270

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....
by ThierryGTLTS
31 Dec 2017, 08:55
Forum: Hardware Problems
Topic: VESC DRV8302 Problems MOSFET Swapping Considerations to all!
Replies: 14
Views: 6742

Re: VESC DRV8302 Problems MOSFET Swapping Considerations to all!

Not possible because it's not the same footprint. And Direct FETs are very difficult to solder. A very small fan can do the job, or have a look at the VESC 6 done by Stewii here http://www.electric-skateboard.builders/t/hw6-4-based-esc-escape/37579 Have a Nice Day and Happy New Year 2018. Thierry
by ThierryGTLTS
26 Dec 2017, 10:54
Forum: General
Topic: 14S VESC ?
Replies: 97
Views: 39136

Re: 14S VESC ?

Hi guys. I've messed up and bought a VESC for my 13S5P E-bike. I didn't do enough research beforehand, I thought the 60V input rating meant that it would take my 54.6Vmax battery, but now I know the voltage on the input side can well exceed the battery voltage. How screwed am I? Will I be OK if I l...
by ThierryGTLTS
24 Dec 2017, 13:13
Forum: General
Topic: 14S VESC ?
Replies: 97
Views: 39136

Re: 14S VESC ?

Most RC motors are power consumption rated. Industrial motors are mechanical power rated, and it can be very different :!: Do you have any facilities to test true mechanical power :?: :!: I'm really curious to know what real mechanical power I can expect from Alien power motors. Merry Christmas to a...
by ThierryGTLTS
24 Dec 2017, 13:04
Forum: Hardware Problems
Topic: VESC makes the cute sound, but motor is only jerking back and forth.
Replies: 4
Views: 2473

Re: VESC makes the cute sound, but motor is only jerking back and forth.

Did you press apply for the detected parameters and write the configuration to the VESC :?: :!:

No other ideas, if the detection is perfect.

Thierry

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