Variable Frequency Drive (VFD)

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Abbreviation(s) and Synonym(s):

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

Glossary Comments

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See NISTIR 7298 Rev. 3 for additional details.

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Variable Frequency Drive (VFD)

Glossary Comments