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Study and review of permanent magnets for electric vehicle propulsion motors
| 题名： | Study and review of permanent magnets for electric vehicle propulsion motors |
| 作者： | Strnat, K. J. |
| 关键词： | magnet；review；electric；perm；ulsi；study；motor；nets；rman；erma |
| 摘要： | A study of permanent magnets (PM) was performed in support of the DOE/NASA electric and hybrid vehicle program. PM requirements for electric propulsion motors are analyzed, design principles and relevant properties of magnets are discussed. Available PM types are reviewed. For the needed high-grade magnets, design data, commercial varieties and sources are tabulated, based on a survey of vendors. Economic factors such as raw material availability, production capability and cost are analyzed, especially for cobalt and the rare earths. Extruded Mn-Al-C magnets from Japan were experimentally characterized. Dynamic magnetic data for the range -50 deg to 150 deg C and some mechanical properties are reported. The state of development of the important PM material families is reviewed. Feasible improvements or new developments of magnets for electric vehicle motors are identified. |
| 报告类型： | 科技报告 |
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