Computer Security Resource Center

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Variable Frequency Drive (VFD)

Abbreviation(s) and Synonym(s):

VFD

Definition(s):

  A type of drive that controls the speed, but not the precise position, of a non-servo, AC motor by varying the frequency of the electricity going to that motor. VFDs are typically used for applications where speed and power are important, but precise positioning is not.
Source(s):
NIST SP 800-82 Rev. 2 (NISTIR 6859)