Category: Toolbox > eDrives and Systems > eMotors > Other Tools > PWM
Inputs:
•modulation%: Indicates the percentage of carrier frequency cycle in which pulse is active (high) from 0 to 100%.
•carrier_freq: Indicates the base frequency of modulation carrier signal in hertz.
Output:
•output: Indicates the pulse width modulated output scaled 0 to 1.
Description: The PWM-Single Phase block provides a pulse width modulated signal based on the input carrier frequency and % modulation.
Diagram name: PWM Single Phase
Location: Examples > eDrives and Systems > eMotors > Brush DC
In this example, the PID Controller (Digital) block is configured as PI and saturation limits are set for 0 to 100 for anti-windup control with the PWM logic. A modulation frequency is chosen at 3000 Hz, and the gain of 250 represents voltage switching at 250V, controlled by the PWM. Velocity is measured from the load using a tachometer and fed back to the PI compensator.
