A New Insight into Six Phase Induction Machine Modeling Under Open Phase Fault Condition

Deilamani M., Kianinezhad R., Seifossadat S. G. H., Keramatzade M.

International Aegean Conference on Electrical Machines and Power Electronics / Electromotion Joint Conference, İstanbul, Turkey, 8 - 10 September 2011, pp.201-204 identifier

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.201-204
  • Keywords: induction motor, open phase fault, decoupled space
  • Middle East Technical University Affiliated: No

Abstract

As the open phase fault occurs in a multiphase induction machine, it continues running even though its dynamic properties drastically changes. If neutral point of stator winding is not grounded, stator phase voltages become unknown and make the modeling so complicated. Using suitable basis vectors in six-dimensional space, phase voltages are calculated efficiently in this paper. Then, machine model in five-dimensional space is used to assess electromechanical torque and speed. So the presented model is a combination of machine models in both six and five-dimensional spaces. In order to make a comparison, previous method to estimate phase voltages is presented too. A simulation has developed to confirm the proposed model.