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Development of Motor Model of Rotor Slot Harmonics for Speed Sensorless Control of Induction Motor
Author(s) -
Okubo Tatsuya,
Ishida Muneaki,
Doki Shinji
Publication year - 2014
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.22478
Subject(s) - harmonics , induction motor , stator , rotor (electric) , control theory (sociology) , transient (computer programming) , magnetomotive force , wound rotor motor , steady state (chemistry) , engineering , computer science , physics , electrical engineering , control (management) , voltage , chemistry , artificial intelligence , operating system
SUMMARY This paper proposes a novel mathematical dynamic model to represent the steady‐state and transient‐state characteristics of rotor slot harmonics of an induction motor for sensorless control. Although it is well known that the rotor slot harmonics originate from the mechanical structure of the induction motor, a mathematical model that describes the relationship between the stator/rotor currents of the induction motor and the slot harmonics has not yet been proposed. Therefore, in this paper, a three‐phase model of the induction motor that depicts the rotor slot harmonics is developed by taking into consideration the magnetomotive force harmonics and the change in the magnetic air gap caused by the rotor slots. The validity of the proposed model is verified by comparing the experimental results and the calculated values. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(3): 63–74, 2014; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.22478