160KW VESC

General topics and discussions about the VESC and its development.
marcos
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Re: 160KW VESC

Postby marcos » 19 Feb 2017, 14:13


marcos
Posts: 21
Joined: 19 Feb 2016, 17:12
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Re: 160KW VESC

Postby marcos » 22 Feb 2017, 00:55

So here is an update...

Image

Image

marcos
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Re: 160KW VESC

Postby marcos » 23 Feb 2017, 17:09

Well, if you want to try it now I can point you to the PCB manufacturer so you can avoid the pcb tooling. That way each board would cost you around $15 instead of $15+$200.

This first version was designed very fast and it needs a revision that I won't be able to make for about a month. For example, I made a mistake in an inductor footprint and I have to power up the board with a regulated 24v supply instead of a ~12v that is stepped up to 24v. There is also a non-ideal layout of the 3.3v regulator, and there is some noise ripple so more capacitance is needed at the supplies.

The rest seems to be working fine, although I need some input from benjamin to continue. In your case you might need lighter phase voltage/current filtering. Right now the low pass filters delay the signals by almost 2useg, which might be a problem in a low inductance motor.

In the repository there is an interface board example that should be delivered to me next wednesday,
inverter assembly.png
inverter assembly.png (221.93 KiB) Viewed 5853 times

That interface has the needed current and voltage sensors that you'll probably need.

Right now, I need the vesc 6 firmware because this has 3 phase current sensors, then I will need the incoming interface board, and in between I'll try to update the layout to fix the inductor screwup.

I'd encourage you to check the schematic, tell me if there is something you'd need or if you something odd. Maybe you can get to try the revised pcb. I won't assemble them for you, it takes me 2 full days to assemble 2 boards.

pf26
Posts: 310
Joined: 28 Mar 2016, 14:37
Location: FR Valence
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Re: 160KW VESC

Postby pf26 » 23 Feb 2017, 20:04

Maybe I missed something, but from the schematics, I think the overcurrent protection works only in one direction of each phase current. Is it wanted ?

marcos
Posts: 21
Joined: 19 Feb 2016, 17:12
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Re: 160KW VESC

Postby marcos » 23 Feb 2017, 21:10


rew
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Location: Delft, Netherlands.
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Re: 160KW VESC

Postby rew » 23 Feb 2017, 23:29


marcos
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Re: 160KW VESC

Postby marcos » 24 Feb 2017, 00:33


pf26
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Re: 160KW VESC

Postby pf26 » 24 Feb 2017, 12:54


marcos
Posts: 21
Joined: 19 Feb 2016, 17:12
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Re: 160KW VESC

Postby marcos » 24 Feb 2017, 20:14


pf26
Posts: 310
Joined: 28 Mar 2016, 14:37
Location: FR Valence
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Re: 160KW VESC

Postby pf26 » 25 Feb 2017, 09:06

I think the MURS160-13-F forward voltage is lower than 1.2V at low currents. But it makes little difference.

Most likely you have to make your own inductor for the double pulse testing. You don't really car about losses, but low capacity is probably necessary.
Do you plan to use fuses in your board supply ?


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