Transcript Electronic Speed Control ESC

Electronic Speed Control
ESC
Electronic Speed Controls
A device that controls the speed of motors according to signals received from flight control
board
ESC is also a BEC
A battery eliminator circuit (BEC) is an electronic circuit designed to deliver electrical
power to other circuitry without the need for a battery
Function Of ESCs
Converts D.C Supply from battery into A.C Supply (Easy to control RPM)
Controls the speed of the motors
ESC Circuit
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N-channel Power MOSFETs
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Because of their good characteristics
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Low DS resistance
MOSFETs is that they handle power more efficiently
MOSFET
BJT
High speed
BJT have
speed
Low Power
Consumption
More Power
Consumption
How Brushless Motor Works with ESC?
A
B
Video #1
C
How to select ESC?
Each motor take a different amount of amps
For example:
Motor is pulling 10 amps.
I would want to get an ESC that is rated for 15 or 18 amps.
The higher amp-rated ESC you get the less heat will be radiated.
Let’s look at a 1000kV motor. Its rating (1000kV) means that it will spin at 1000 RPM per volt.
A 3-cell Li-Po battery has a nominal voltage of 11.1V, so our 1000kV motor on a 3-cell will spin
at 1000*11.1 or 11,100 RPM.