How Does a Variable Frequency Drive Convert AC to DC?
Explanation of AC vs. DC Electricity can be thought of as the movement of electrons. As such, it can usually be described as being either AC (alternating current) or DC (direct current). With direct current, the electrons only move in one direction (forward) so the electrical current is always going in the same direction. Alternating current involves directions moving in two directions–backwards and forwards–which causes the electrical current to change directions. Alternating current also involves a constantly changing electrical current that can be described as a wave. This means that the direction of the current and amplitude change. Variable Frequency Drives Variable frequency drives are systems that are able to control the speed at which an AC electrical motor rotates. They’re able to do this by changing the frequency of the electrical current that’s supplied to the motor (the frequency is a measure of how quickly the alternating current completes one full cycle of its wave moti
