Field weakening alternative

Marco Armhein, Philip T. Krein, Patrick L. Chapman, Brenda I. Fierro

Research output: Contribution to journalArticlepeer-review


The rerated motor has the capability to provide its nominal torque at high speeds, increasing its shaft power while keeping its mass constant by increasing the applied frequency and spinning, the motor faster. The rerated induction machine has features such as high-power density, high efficiency, rugged constructions and manageable failure behavior in traction applications. This technique has been applied to 12.4 and 4.13N.m induction machines and showed that the rerated induction machines are capable of competing with permanent-magnet machines and can act as a practical method for motor mass reduction and efficiency improvement in traction applications. The rerating can increase the efficiency of a machine operated at nominal torque in a higher-speed range.

Original languageEnglish (US)
Pages (from-to)28-37
Number of pages10
JournalIEEE Industry Applications Magazine
Issue number6
StatePublished - Nov 2007

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Field weakening alternative'. Together they form a unique fingerprint.

Cite this