VESC Original Hardware

Hi,

I've just login to this forum after a quiet long quest of the best solution to my hardware issue (vesc 4.12 from Torqueboards for those who know with firmware/bldc tool 2.18 provided also by this vendor).

I hope my post is in the good discussion folder of this forum and apologize if not (maybe you can suggest the proper site/forum).

 Hi guys, Could you please help?

The board has been working well with dual vesc6 for a few days, I've probably done 20kms using these new vesc6s. (upgraded from Maytech vesc 4s which were useless in FOC.)

When the problem occurred I had only been running for about 30 seconds when I lost connection with my remote, (under very small load and turning fairly sharply). I assumed a flat remote battery initially. 

This is a copy from here (With a few amendments):

http://vedder.se/forums/viewtopic.php?f=7&t=873

I don't seem to get much feedback, so trying it here.

Hey guys,

Hello,

I noticed that the dead-time of the MOSFETs seems to be composed of 3 parts.

1. HW part DRV8302 (or 01), 10K sets 80nS dead-time, 50µS the min possible + 3nS/1K of resistance.
2. In mc_interface.h #define mcpwm_dead_time_cycles 60, but I ignore the lenght of one cycle, help, please
3. In BLDC Tool or VESC Tool, you can find dead-time compensation, preset to 0.08µS.

Good Morning,

I've looked several times at HW4.12 and HW6.4 schematic, and I don't understand the HW differences between Mosfet and Motor temp sensor.

The Mosfet temp is done that way, 10K and 2.2µF connected between Input Pin and GND, and 10K NTC connected form Vcc to Input Pin.

The Motor temp is done that way, 4.7nF connected between Input Pin and GND, 10K resistor connected.between Vcc and Input Pin, and no info for Motor NTC connection.

Why those differences if the code is the same??!!!

Have a Nice W-E.

Thierry

It would be interesting if there is a difference to V4 regarding adding capacitors with long power cables. I just received 2x VESC 6 (niiiiice!) and thinking about mounting them on the back of my trampa. Right now I have the V4.12's inside the battery enclosure and long phase wires. In my case the power cables would have a length of about 50-60 cm.