DocumentCode :
1467478
Title :
Ceramic filled thermoplastic encapsulation as a design feature for a BLDC motor in a disk drive
Author :
Neal, Griffith D. ; Kwon, Ohsang ; Lieu, Dennis K.
Author_Institution :
Encap Motor Corp., Alameda, CA, USA
Volume :
37
Issue :
2
fYear :
2001
fDate :
3/1/2001 12:00:00 AM
Firstpage :
793
Lastpage :
798
Abstract :
Thermoplastics have made steady gains in use in a wide variety of motor applications. One of the few areas in which thermoplastics have not been effectively utilized are spindle motors. Central to the development of these applications is an understanding of the heat transfer and harmonic damping requirements of the applications and the cost/benefit relationships that exist. A simple model will be presented in which the heat transfer requirements for thermally conductive plastics can be understood and their costs can be estimated. Various filler systems and their performance will be discussed highlighting motor designs where these materials offer a competitive alternative to traditional construction techniques
Keywords :
brushless DC motors; conducting polymers; disc drives; encapsulation; filled polymers; heat transfer; small electric machines; thermal analysis; BLDC motor; ceramic filled thermoplastic encapsulation; cost/benefit relationships; design feature; disk drive; filler systems; harmonic damping; heat transfer; motor designs; spindle motors; thermally conductive plastics; Brushless DC motors; Ceramics; Conducting materials; Copper; Costs; Disk drives; Encapsulation; Heat transfer; Temperature; Thermal conductivity;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.917618
Filename :
917618
Link To Document :
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