| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
The goal of this study is to develop a practical magnetic field analysis method taking account of hysteresis to estimate iron loss and its cause accurately for development of high-efficiency electric machines.
First, an iron loss estimation method considering both hysteretic property and skin effect by utilizing 1-D finite element methods as a post-processing of usual 2-D analyses based on ordinary magnetization curves was examined. Next, a novel parallel finite-element method for obtaining steady-state solutions in time-periodic magnetic field analyses considering hysteresis were investigated based on the parallel TP-EEC method. The effectiveness of these methods was clarified in the analysis of an IPM motor fed by PWM inverter. Finally, verification models for examining the accuracy of scalar and vector hysteresis modeling methods were newly designed. The accuracy of the play model was discussed by comparing the analysis and the measurement results of the proposed benchmark model.
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