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BMS Controls Glossary

Variable Frequency Drive

A Variable Frequency Drive (VFD) is an electrical device used to control the speed of an electric motor by varying the frequency of the power supply. It is also known as an adjustable frequency drive, variable speed drive, AC drive, micro-drive, or inverter drive. The VFD works by controlling the voltage and frequency of the power supply to the motor, which in turn controls the speed of the motor. This allows for more precise control of the motor speed, as well as energy savings. VFDs are used in a variety of applications, such as pumps, fans, compressors, and conveyors. They are also used in the automotive industry to control the speed of electric motors in cars and trucks. VFDs are becoming increasingly popular due to their ability to reduce energy consumption and improve efficiency. They are also used in industrial applications, such as controlling the speed of a conveyor belt or a machine tool. VFDs are an essential component of any modern industrial automation system.