Premium
Basic principle and maximum torque characteristics of a six‐phase pole change induction motor for electric vehicles
Author(s) -
Mizuno Takayuki,
Tsuboi Kazuo,
Hirotsuka Isao,
Suzuki Shintaro,
Matsuda Isao,
Kobayashi Tadao
Publication year - 1997
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/(sici)1520-6416(199702)118:3<78::aid-eej8>3.0.co;2-m
Subject(s) - magnetomotive force , torque , power (physics) , range (aeronautics) , constant (computer programming) , control theory (sociology) , phase (matter) , induction motor , electric motor , electromagnetic coil , electrical engineering , engineering , computer science , physics , voltage , aerospace engineering , control (management) , quantum mechanics , thermodynamics , artificial intelligence , programming language
In addition to basic characteristics such as small size, lightweight and easy maintenance, the electric vehicle (EV) motor is required to possess characteristics that allow for the production of high torque in low‐speed region and to realize a wide‐speed range of constant power in high‐speed region. In an attempt to improve further the constant power operation of the induction motor (IM), this paper proposes a six‐phase pole change IM (six‐phase PCIM). The six‐phase PCIM further expands the constant power operation range without increasing either volume or current of IM. To clarify the basic principle and torque characteristics of the six‐phase PCIM, its winding method and distribution of magnetomotive force (mmf) will first be examined. Then, by establishing a performance calculation method based on a quasisinusoidal wave method, the feasibility of a highly precise performance calculation sufficient for actual use will be demonstrated. Furthermore, by clarifying through experiment the maximum torque characteristics, the feasibility of expansion of the constant power operation range will be confirmed and its effectiveness in the EV will be discussed. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (3): 78–91, 1997