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What is an AC Synchronous Motor?



Synchronous Motor BrakedownAn informatiive video about AC Synchronous Motors

Below is a 5 minute video from an hour long presentation given by Todd Hatfield, Senior Electrical Engineer at HECO - All Systems Go, during the 2018 Reliability, Process, and Maintenance (RPM) Symposium. This clip covers the basis of synchronous motors and how they differ from induction motors.

For AC Synchronous Motors, this video presentation will cover:
  • The basis of electric motors and the difference between synchronous and induction motors
    • How the rotating magnetic field causes induction through the rotor bars
  • How synchronous motors are pulled into synchronism using DC voltage
  • The power triangle and how synchronous motors produce reactive power 
  • The parts and components of a synchronous motor 



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Todd A. Hatfield

HECO – All Systems Go



About the author:

Todd Hatfield is a Senior Electrical Engineer at HECO. He has over 35 years' experience in generator and electric motor repair and engineering. Todd has a BS in Electrical Engineering, and his areas of expertise are: electrical and mechanical motor redesigns and engineering, root cause of failure analysis, and quality electric motor rebuilding.

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