307 磁場解析を用いた軸流血液ポンプ用モータの性能予測に関する研究(ライフサポートにおける工学技術,オーガナイズドセッション)

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In this study, the enclosed-impeller type axial flow blood pump has been researched and developed. This pump satisfied the LVAD condition, however motor efficiency was not sufficient. Consequently, we have investigated motor with magnetic field analysis to improve motor efficiency. However, the numerical discrepancy between analysis and experiment was wide. This paper deals with the improvement of analysis accuracy in brushless DC motor for pump. Motor characteristic is evaluated using magnetic field analysis. Analysis model consist of the motor and driving circuit. And, analysis in which a combined s upply voltage in circuit and iron loss is carried out. From these analyses, T-I curve and T-N curve are calculated. By comparing each characteristic curve, values obtained from analysis are found to be in good agreement with the experimental data. Maximum numerical error is 1.2 % at about constants calculated from characteristic curve. These results suggest feasibility of estimate motor characteristics.
社団法人日本機械学会の論文
2008-09-12