Development of Design Method of Energy Efficient Machines

为了提高电机的效率，发展了旋转电机的分析技术、优化设计方法、高精度的磁特性测量技术。并对永磁旋转电机的优化技术进行了研究。主要研究成果如下：1.建立了考虑电源旋转和波形变形的磁场分析方法为了分析逆变器供电的旋转电机，提出了考虑旋转和波形变形的三维有限元分析方法。电机优化设计方法的发展研究了三维有限元方法和Rosenbrock方法在旋转机械优化设计中的应用。磁特性测量技术的发展通过对波形控制技术的研究和新型二维磁特性测试仪的研制，将用于磁场分析的磁特性测量到高磁通密度。永磁旋转电机的优化设计采用三维有限元和最优化方法对永磁旋转电机进行优化设计。结果表明，该系统的扭矩可提高40%。

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 SourceIn 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 MachinesProblems 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 MeasurementsThe 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 MachineThe permanent rotating machine is optimized using 3-D FEM and optimization method. It is shown that the torque can be increased by 40%.