I've been looking all over the place and can't seem to find a solid answer. My question is - how much voltage/current gets through an ESC to a brushless motor? More specifically, I'm pretty sure the current varies with the load, but the voltage doesn't? For example, if I have an 11.1v battery with 60 amp potential, the motor will receive 11.1 volts and a variable amount of current depending on the load? Is this correct?
How much voltage/current gets through an ESC
- Thread starter zemanekj
- Start date
djsfantasi
- Joined Apr 11, 2010
- 9,163
In general, yes!
A common misconception, of which I’m pretty sure you aren’t making, is that a load only draws the current it needs. That is, if you have a 12V 5A power supply, the load doesn’t get 5A. That rating doesn’t represent what is forced into a load; it is the maximum current the supply CAN give.
A common misconception, of which I’m pretty sure you aren’t making, is that a load only draws the current it needs. That is, if you have a 12V 5A power supply, the load doesn’t get 5A. That rating doesn’t represent what is forced into a load; it is the maximum current the supply CAN give.
djsfantasi
- Joined Apr 11, 2010
- 9,163
Electronic Speed Controller
Chris65536
- Joined Nov 11, 2019
- 270
The average voltage will change with the speed controller setting. The amps drawn are proportional to the torque the motor is loaded with.
MaxHeadRoom
- Joined Jul 18, 2013
- 28,698
If using speed control such as PWM, then the typical power supply should be a minimum of +10% above motor rating.
ESC: term used in RC control.
Max.
ESC: term used in RC control.
Max.
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