NDLI: Permanent magnet motors capable of pole-changing without changing the connection of the windings for high efficiency

Content Provider	IEEE Xplore Digital Library
Author	Sakai, K. Matsuda, K. Yuzawa, N.
Copyright Year	2015
Description	Author affiliation: Course of Electricity, Electronics and Communications, Graduate School of Science and Engineering, Toyo University, Kawagoe, Saitama 350-8585 Japan (Matsuda, K.) \|\| Course of Open Information Systems, Graduate School of Engineering, Toyo University, Kawagoe, Saitama 350-8585 Japan (Yuzawa, N.) \|\| Electrical, Electronic and Communications Engineering Department, Toyo University, Kawagoe, Saitama 350-8585 Japan (Sakai, K.)
Abstract	To realize energy saving in electrical appliances and electric vehicles, it is necessary to reduce the power consumption of motors operating at variable speeds. We developed a technique that changes the poles of a permanent magnet (PM) motor depending on the speed. Here, we propose a novel PM motor that changes the number of poles without changing the winding connections and discuss its basic configurations and principles. Pole-changing is accomplished using the d-axis current of the proposed motor for magnetization. Our analysis results confirm that the pole-changing PM motor reduces iron loss by 36% over a conventional PM motor and increases efficiency over a wide range of speeds. Hence, the proposed motor is suitable for use in variable-speed drive systems to achieve high performance and efficiency.
Starting Page	468
Ending Page	474
File Size	740861
Page Count	7
File Format	PDF
e-ISBN	9781479979417
DOI	10.1109/IEMDC.2015.7409100
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic flux Magnetic cores Permanent magnet motors Induction motors Rotors Magnetization Windings wind power generation Efficiency electric machines electric vehicle magnetization motor drives permanent magnet machines variable speed drives
Content Type	Text
Resource Type	Article

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