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Variable Frequency Drives (VFD’s)

1 Understanding & Managing Variable Frequency DrivesPresented by: Greg Stark, 10, 2014 Sponsored by: Variable Frequency Drives (VFD s) Popular speed control devices used in industrial, commercial and residential applications. Huge energy savings potential operating centrifugal fans, pumps and compressors Vary Frequency of electrical supply to an induction motor to vary the motor speed . Vary the speed /flow of the Applications Industrial Fans, Pumps, Compressors Conveying Systems Commercial HVAC Compressors Pumps and Air Handlers Residential Variable speed HVAC equipment Energy Efficient Washing MachinesHow Have We Varied speed Historically?

other types of variable speed control equipment. • Energy savings is generally low for applications where average speed requirements are near the motors rated ... • How about a pumping system where multiple pumps feed multiple systems and valves are used to match the number of pumps with the amount of flow

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