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VARIABLE FREQUENCY DRIVES THEORY, APPLICATION, …
1 VARIABLE FREQUENCY DRIVESTHEORY, APPLICATION, ANDTROUBLESHOOTINGBYHOWARD W. PENROSEUNIVERSITY OF ILLINOIS AT CHICAGOENERGY RESOURCES CENTER851 SOUTH MORGAN STREETROOM 1213, SEO, MC156 CHICAGO, IL Current Induction motor Purpose of Induction motor motor Design E motor motor Efficient Electric Duty FREQUENCY Torque Torque drive Operation of a PWM Inverter (VFD).. Speed Duty IntroductionIn this presentation, we will be covering VARIABLE FREQUENCY DRIVES (VFD s) and theirtheory, application, and troubleshooting. In order to properly cover the subject, it will bebroken into four distinct parts: Induction motor theory ; VFD theory ; Power quality; Current Induction motor motor systems consume 20% of all energy generated in the United States, 57%of all electrical energy, and 70% of electrical energy consumed by industry.
winding in order to develop mechanical torque. The stator windings of an induction motor are evenly distributed by 120 degrees electrical. As the three phase current enters the windings, it creates a rotating magnetic field within the air gap (the space between the rotor and stator laminations). The speed
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