A REVIEW OF VFD CONTROL PANEL

But, if we decrease the frequency to 30Hz, then we must also lessen the voltage to 240V so as to retain the V/Hz ratio. How are we about to decrease the voltage if the one voltage We have now is 650VDC?This is termed Pulse Width Modulation or PWM. Visualize that we could control the force in a water line by turning the valve on and off at a signifi