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原文传递 Ultra-Efficient and Power Dense Electric Motors for U.S. Industry. Final Technical Report.

题名：	Ultra-Efficient and Power Dense Electric Motors for U.S. Industry. Final Technical Report.
作者：	Schiferl, R.; Umans, S. D.
关键词：	Design; Electric Motors; Electronic Equipment; Induction; Inverters; Magnets; Power Density; Prototypes; Rotors
摘要：	The primary purpose of this project was to combine the ease-of-installation and ease-of-use attributes of industrial induction motors with the low-loss and small size and weight advantages of PM motors to create an ultra-efficient, high power density industrial motor that can be started across-the-line or operated from a standard, Volts/Hertz drive without the need for a rotor position feedback device. PM motor products that are currently available are largely variable speed motors that require a special adjustable speed drive with rotor position feedback. The reduced size and weight helps to offset the magnet cost in order make these motors commercially viable. The scope of this project covers horsepower ratings from 20 - 500. Prototypes were built and tested at ratings ranging from 30 to 250 HP. Since fans, pumps and compressors make up a large portion of industrial motor applications, the motor characteristics are tailored to those applications. Also, since there is extensive use of adjustable frequency inverters in these applications, there is the opportunity to design for an optimal pole number and operate at other than 60 Hz frequency when inverters are utilized.
报告类型：	科技报告