Originally Posted by
Blacksheep
The ATRUs produce both plus and minus 270 V DC outputs. The Motor Controllers modulate the duration for which the dc power from each output is alternately applied to the motors - with longer pulses at the start reduced to shorter and shorter pulse width as the motor accelerates.
Are the motors DC motors, and CSMC are some sort of slow pulsing DC/DC converters? Or are the motors AC motors, and the CSMC are PWM modulating a sine?
Traditional brushed DC motors are in decline due to maintenance.
Brushless DC motors are basically a sort of AC synchronous motors with integrated electronics. There is no need for power electronics in both the CSMC's and the DC motors.