John Yoon, PE, LEED AP


Mechanical & Electrical March 4, 2015

Measure motor efficiency to understand VFD’s value

Multi-phase ac induction motors have traditionally dominated the electric motor industry. The industry has improved overall motor efficiency in each subsequent NEMA-MG 1 motor standard revision. To make sense of motor efficiency, one must understand what efficiency losses are attributed to.

By John Yoon, PE, LEED AP
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