Grant-in-Aid for international Scientific Research
|Allocation Type||Single-year Grants|
|Section||University-to-University Cooperative Research|
|Research Institution||Okayama University|
TAKAHASHI Norio Okayama University, Department of Electrical and Electronic Engineering, Professor, 工学部, 教授 (40108121)
NAFALSKI A. サウスオーストラリア大学, 工学部, 教授
MURAMATSU Kazuhiro Okayama University, The Graduate School of Natural Scinece and Technology, Research Assistant, 大学院・自然科学研究科, 助手 (30263627)
FUJIWARA Kouji Okayama University, Department of Electrical and Electronic Engineering, Associate Professor, 工学部, 助教授 (20190093)
JAIN L. サウスオーストラリア大学, 工学部, 助教授
GOL O. サウスオーストラリア大学, 工学部, 助教授
NAFLASKI Andrew University of South Australia, School of Physics and Electronic Systems Eng., Professor
JAIN Lakhmi University of South Australia, School of Physics and Electronic Systems Eng., Associate Professor
GOL Ozdemir University of South Australia, School of Engineering, Associate Professor
|Project Period (FY)
1997 – 1998
Completed(Fiscal Year 1998)
|Budget Amount *help
¥3,000,000 (Direct Cost : ¥3,000,000)
Fiscal Year 1998 : ¥1,400,000 (Direct Cost : ¥1,400,000)
Fiscal Year 1997 : ¥1,600,000 (Direct Cost : ¥1,600,000)
|Keywords||magnetic field analysis / iron loss / hysteresis / eddy cirrent / time-periodic FEM / Preisach model|
In order to increase the efficiency of electric machines, the technique for analyzing rotating machines, optimal design method, measuring technique of magnetic characteristics with high accuracy are developed. The optimization technique of permanent-magnet rotating machine is also investigated. The results obtained can be summarized as follows ;
1. Development of Method for Analyzing Magnetic Field Considering Rotation and Distorted Waveform of Power Source
In order to analyze the rotating machine fed by inverter, 3-D finite element method (FEM) which can take account of rotation and distorted waveform is developed.
2. Development of Optimal Design Method of Electric Machines
Problems in the optimal design of rotating machines using 3-D FEM and Rosenbrock's method are examined.
3. Development of Measuring Technique of Magnetic Characteristics and Measurements
The magnetic characteristics which are used in magnetic field analysis are measured up to high flux density by investigating the controlling technique of waveform and by developing the new-type measuring apparatus of 2-D magnetic characteristics.
4. Optimal Design of Permanent Magnet Rotating Machine
The permanent rotating machine is optimized using 3-D FEM and optimization method. It is shown that the torque can be increased by 40%.