Facebook Twitter LinkedIn YouTube Menu Search Arrow Right Arrow Left Arrow Down Arrow Up Home Arrow Next Arrow Previous RSS Icon Calendar Icon Warning Icon
Resourcesbreadcrumb separatorANSI Accredited Standards Developer Information

ANSI/EASA AR100-2020 cover

ANSI/EASA Standard AR100-2020
ANSI/EASA AR100-2020: Recommended Practice for the Repair of Rotating Electrical Apparatus is a must-have guide to the repair of rotating electrical machines. It establishes recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.

LEARN MORE & DOWNLOAD

Questions?

For information about ANSI/EASA AR100 or questions about the work on this standard, contact:

Mike Howell, PE
EASA Technical Support Specialist
+1 314 993 2220
mhowell@easa.com

ANSI Accredited Standards Developer Information

Understanding rotating frequency converters makes repair easier

  • June 2001
  • Number of views: 9277
  • Article rating: No rating

Chuck Yung
EASA Technical Support Specialist

Member Question: We recently received a rotating frequency converter for repair. It appears to be a wound-rotor motor coupled to an induction motor. The drive motor is not the same speed as the wound-rotor motor. How does this work?

The rotating frequency converter is exactly as you describe. Usually the drive motor has fewer poles than the wound-rotor motor, so the wound-rotor motor is driven faster than its synchronous speed to increase the frequency of the output.

LOGIN TO VIEW AND DOWNLOAD THE ARTICLE



EASA Technical Manual

More information on this topic can be found in EASA's Technical Manual
  • Section 2: AC Machines

Related Reference and Training Materials

Tags: Wound rotor Rotating frequency converter
0Upvote 0Downvote
Rate this article:
No rating
Print

Comments are only visible to subscribers.

EASA Rewind Study cover

The Effect of Repair/Rewinding on Premium Efficiency/IE3 Motors
Tests prove Premium Efficiency/IE3 Motors can be rewound without degrading efficiency.

DOWNLOAD THE FULL RESULTS

BUY PRINTED COPIES

EASA Good Practice Guide

Good Practice Guide to Maintain Motor Efficiency
Based on the 2019 and 2003 Rewind Studies of premium efficiency, energy efficient, IE2 (formerly EF1) and IE3 motors

LEARN MORE & DOWNLOAD