In the world of alternating current (AC) motors and their associated shaft-turning applications across all industries, no components have made a greater impact than the AC variable frequency drive (VFD). The ability of VFDs to precisely control motor speed and torque, reduce overall energy consumption, and minimize equipment wear have opened the door to many applications that formerly required more complex and expensive electro-mechanical solutions.

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https://www.plantservices.com/articles/2021/advanced-variable-frequency-drives-are-working-in-more-applications/