LARGE-EFFECTIVENESS VFD CONTROL PANELS FOR CHARGE-EFFECTIVE SPEED REGULATION IN UAE

For example, with a typical 480 VAC three-phase enter voltage, the DC bus will maintain a charge of about 650 VDC, with real bus voltage according to the line voltage stage and motor load. The rationale the DC bus voltage is increased compared to nominal input line voltage is due to root-suggest-squared measurements of AC sine waves (the “peaks�