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原文传递 Final Report on Assessment of Motor Technologies for Traction Drives of Hybrid and Electric Vehicles.

题名：	Final Report on Assessment of Motor Technologies for Traction Drives of Hybrid and Electric Vehicles.
作者：	Fessler, R. R.
关键词：	Alloys; Design; Electric Motors; Excitation; Ferrites; Hybrid Electric Powered Vehicles; Induction; Magnets; Motors; Power Density; Targets; Torque; Wheels
摘要：	Currently, interior permanent magnet (IPM) motors with rare-earth (RE) magnets are almost universally used for hybrid and electric vehicles (EVs) because of their superior properties, particularly power density. However, there is now a distinct possibility of limited supply or very high cost of RE magnets that could make IPM motors unavailable or too expensive. Because development of electric motors is a critical part of the U.S. Department of Energy (DOE) Advanced Power Electronics and Motors activity, DOE needs to determine which options should be investigated and what barriers should be addressed. Therefore, in order to provide a basis for deciding which research topics should be pursued, an assessment of various motor technologies was conducted to determine which, if any, is potentially capable of meeting FreedomCAR 2015 and 2020 targets. Highest priority was given to IPM, surface mounted permanent magnet (SPM), induction, and switched reluctance (SR) motors. Also of interest, but with lesser emphasis, were wheel motors, multiple-rotor motors, motors with external excitation, and several others that emerged from the assessment. Cost and power density (from a design perspective, the power density criterion translates to torque density) are emerging as the two most important properties of motors for traction drives in hybrid and EVs, although efficiency and specific power also are very important.
报告类型：	科技报告