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vedder.se forums • DIFFERENTS CURRENTS
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DIFFERENTS CURRENTS

Posted: 08 May 2018, 13:59
by andre_denzel
What is the difference between CURRENT IN and CURRENT MOTOR?

Best Regards

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Re: DIFFERENTS CURRENTS

Posted: 08 May 2018, 15:59
by arvidb
Well, current in is the current pulled from the batteries, and current motor is the current supplied to the motor windings. They can differ since the VESC acts as a DC/DC converter: P = Uin*Iin = Umotor*Imotor. Since the motor voltage is lower than the battery voltage except when going full throttle, the motor current will be larger most of the time.

Re: DIFFERENTS CURRENTS

Posted: 08 May 2018, 16:44
by devin
@andre_denzel here is a chart showing the predicted performance of an electric skateboard in bldc mode with 50a motor limit and 50a battery limit software user settings... take a look at the blue and black lines, top left chart (motor amps and battery amps) and the red line, bottom right chart (battery amps).

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this chart shows different user settings (120a motor limit and 50a battery limit)

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Re: DIFFERENTS CURRENTS

Posted: 08 May 2018, 17:38
by andre_denzel
You were very helpful.

Thanks very much!!

Regards!