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Driving characteristics of an electromagnet‐assisted ferrite magnet motor
Author(s) -
Motoki Kazuki,
Fukami Tadashi,
Koyama Masato,
Mori Takeshi,
Yamada Masaki,
Nakano Masatsugu
Publication year - 2018
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.23161
Subject(s) - electromagnet , magnet , ferrite (magnet) , torque , automotive engineering , electrical engineering , mechanical engineering , ac motor , materials science , engineering , electric motor , computer science , physics , thermodynamics
Abstract In this article, the driving characteristics of an electromagnet‐assisted ferrite magnet motor (EMaFM) are investigated using a 1.5‐kW prototype machine. The EMaFM is a new type of synchronous motor, which combines a ferrite magnet motor with an electromagnet motor. Finite element analysis and experimental results show the following. (1) A wide constant power range as well as high torque at low speeds can be achieved by assisting the torque with the built‐in electromagnet motor. (2) It is possible to reduce the losses and improve the efficiency by adjusting the field current according to the operating conditions.