Abstract
This paper reports an investigation into the influence of interbar currents on the performance of die-cast cage induction machines. This work is based on an extensive set of experimental measurements using a series of specially made die-cast cage induction motors with bars insulated using alternate processes. Experimental measurements were undertaken separately by the industrial manufacturer and at the university laboratories, and these clearly demonstrate that increasing the insulation of the rotor cage inhibits the flow of interbar current and reduces the total motor losses and increases the motor efficiency as a consequence. The experimental measurements were further validated using an analytical interbar model. Further experimental measurements also demonstrate that insulating the rotor cage also modifies the stator torque in a counterintuitive fashion.
| Original language | English |
|---|---|
| Article number | 5437178 |
| Pages (from-to) | 928-936 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 46 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 2010 |
Bibliographical note
Funding Information:Paper 2009-EMC-141.R1, presented at the 2009 IEEE International Electric Machines and Drives Conference, Miami, FL, May 3–6, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. Manuscript submitted for review May 29, 2009 and released for publication September 14, 2009. First published March 22, 2010; current version published May 19, 2010. This work was supported by the A. O. Smith Corporation.
Keywords
- Cage induction motor
- Interbar current losses
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering