Dual VESC - Single Motor

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Marci87
Posts: 1
Joined: 30 Oct 2018, 22:26
Location: Deutschland
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Dual VESC - Single Motor

Postby Marci87 » 30 Oct 2018, 22:47

Hi, my name is Marcel and I'm from Germany.
I'm just upgrading my ebike from a Kelly Controller to one or more VESC 4.2.

I couldn't find any information online about my Idea:

Is it possible to set up two (or three) VESCs in combination with only one motor? :mrgreen:

The motor would still be a 14 pole turnigy 120-80, sensored brushless, but I'd like to run it on a little more amps... ;)

Did anyone try this before, do I need to wire the sensors parallel (to the VESC), or is it only possible in sensorless mode, or even not at all? I'd prefer to use brushless-sensor-hybrid mode, where sensors only are read out at low rpm.

I also wonder how the Vesc is measuring the amps, and if the other VESC could waste this measurement :?:

So if any one has any information for me, I'd appreciate an answer. Thank you ;)

pf26
Posts: 310
Joined: 28 Mar 2016, 14:37
Location: FR Valence
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Re: Dual VESC - Single Motor

Postby pf26 » 05 Nov 2018, 14:46

I can't think of any way to do this properly, even with an encoder, since the VESC uses the motor winding inductance to produce a relatively smooth current from rough PWM. Even using external inductances, I doubt it would work.
I would use several (VESC+motor), and run them in parallel (on the same axis, or driving the same gear).


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