Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Phase Shift Method for Radial Magnetic Force Analysis in Induction Motors with Non-Skewed Asymmetrical Rotor Slots
KTH, School of Electrical Engineering (EES), Electrical Machines and Power Electronics.
KTH, School of Electrical Engineering (EES), Electrical Machines and Power Electronics.
2009 (English)In: 2009 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE, VOLS 1-3, NEW YORK: IEEE , 2009, 207-212 p.Conference paper, Published paper (Refereed)
Abstract [en]

Skewing which is commonly used in smaller sized induction motors for the reduction of magnetic noise causes higher cross currents in the rotor bars [1], [2]. This leads to a substantial increase of stray losses in the skewed rotor. Reduction of these losses can be achieved by eliminating skew, but at the cost of increased noise level and torque ripple in the motor. A design change is proposed and studied in this paper to minimize the increased noise level by introducing asymmetrical rotor slots. A simpler method of analysis using numerical calculations for the radial air gap forces is proposed and the vibration behavior of the motor is explained. The method is based on phase shift analysis of radial force waves in the air gap of the machine computed at certain equidistant points in the air gap with respect to the rotation of the rotor. Phase information obtained from the Fourier analysis is analyzed to identify and separate the order of the radial force waves i.e., the various modes of vibration. The final results showed improved force spectrum for the newly proposed asymmetrical rotor designs from which better performance of the newly proposed rotors is predicted. This method of analysis is compared with the previously obtained results from the noise measured on a standard motor and the results show a reasonable reliability of the proposed method to predict the noise level in the machine.

Place, publisher, year, edition, pages
NEW YORK: IEEE , 2009. 207-212 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-30224DOI: 10.1109/IEMDC.2009.5075207ISI: 000273989600033Scopus ID: 2-s2.0-70349440493ISBN: 978-1-4244-4251-5 (print)OAI: oai:DiVA.org:kth-30224DiVA: diva2:399030
Conference
IEEE International Electric Machines and Drives Conference (IEMDC 2009) Miami, FL, MAY 03-06, 2009
Note
QC 20110221Available from: 2011-02-21 Created: 2011-02-21 Last updated: 2011-02-21Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Chitroju, RathnaSadarangani, Chandur
By organisation
Electrical Machines and Power Electronics
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 96 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf