Open AccessDesign of a permanent‐magnet flux‐modulated machine with a high torque density and high power factor
Author(s) -
Vukotić Mario,
Miljavec Damijan
Publication year - 2016
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
ISSN - 1751-8679
DOI - 10.1049/iet-epa.2015.0143
Subject(s) - torque , torque density , magnet , stator , direct torque control , power factor , control theory (sociology) , taguchi methods , electric machine , engineering , computer science , mechanical engineering , physics , electrical engineering , voltage , induction motor , thermodynamics , control (management) , artificial intelligence , machine learning
This study presents a novel approach to the design process of a permanent‐magnet flux‐modulated machine by simultaneously focusing on the machine major advantage and disadvantage, that is, the high torque density and low power factor. The machine can be designed with a high power factor while retaining the high torque density. To do so, they both need to be described precisely. The torque equation is improved by considering the stator‐winding leakage flux. It determines the relation between the geometric parameters and the torque more accurately. The power‐factor equation is derived from the electric equivalent circuit representing the simplest description of the machine. The machine geometry optimised with the design of experiments via Taguchi methods assures the best possible performance within the set limitations. It is shown that using the proposed design process makes the permanent‐magnet flux‐modulated machine more appropriate than the classical synchronous machine for the direct drive applications requiring a high torque density, low weight and high efficiency.