vikash23
Full Member level 2
I am developing a test rig for my motor controller.
Below is the image which shows a motor is connected back to back to act as a load with load resistor
left side is the controller that will run the motor of 400W.
Right side i am connecting another motor with a coupling in between and resistor R1, R2, R3 at the end as dummy load.
Voltage generated on right side motor is 24V (back emf)
what vale of resistor R1, R2, R3 should I use to act as load of 400W at 100% pwm by the controller ?.
I saw a resistor of 200W 50ohm.
using three in parallel resistor values will be 16.5ohm
using I = V/R, 24V/16.5ohm = 1.4545A
power = 24V X 1.4545A = 34.9W (am I generating only 34.9W of load?).
Will this resistor value will work ? as 200W X 3 = 600W.
Below is the image which shows a motor is connected back to back to act as a load with load resistor
left side is the controller that will run the motor of 400W.
Right side i am connecting another motor with a coupling in between and resistor R1, R2, R3 at the end as dummy load.
Voltage generated on right side motor is 24V (back emf)
what vale of resistor R1, R2, R3 should I use to act as load of 400W at 100% pwm by the controller ?.
I saw a resistor of 200W 50ohm.
using three in parallel resistor values will be 16.5ohm
using I = V/R, 24V/16.5ohm = 1.4545A
power = 24V X 1.4545A = 34.9W (am I generating only 34.9W of load?).
Will this resistor value will work ? as 200W X 3 = 600W.