A new type single-phase spindle motor for HDD and DVD

Author

Huang, D.R. ; Fan, C.Y. ; Wang, S.J. ; Pan, H.P. ; Ying, T.F. ; Chao, C.M. ; Lean, Eric G.

Author_Institution

Opto-Electron. & Syst. Lab., ITRI, Hsinchi, Taiwan

Volume

35

Issue

2

fYear

1999

fDate

3/1/1999 12:00:00 AM

Firstpage

839

Lastpage

844

Abstract

The cogging torque and dynamic performance of a newly designed single phase brushless DC motor have been investigated in this paper. The single phase brushless spindle motor is usually applied for cooling fan, pump and blower before the performance is improved by the reengineering process. The stator configuration and the drive circuit have been remodeled in order to meet the requirements of the spindle motor used in the DVD and HDD applications. The cogging torque is reduced to 18 g-cm by the salient pole reshaping. An automatic phase adjuster is also introduced to improve the performance of the dynamic characteristics of a single phase spindle motor in this paper. According to the test results, the maximum speed could be increased from 6500 rpm to 12000 rpm and the efficiency from 22% to 38%. A single phase motor has been demonstrated successfully in HDD and DVD applications by reshaping for the salient pole and phase adjusted automatically with the rotation speed

Keywords

brushless DC motors; driver circuits; hard discs; stators; torque; video discs; 38 percent; DVD; HDD; automatic phase adjuster; cogging torque; drive circuit; dynamic performance; rotation speed; salient pole reshaping; single phase brushless DC motor; single-phase spindle motor; stator configuration; Brushless DC motors; Brushless motors; Circuits; Cooling; DC motors; DVD; Forging; Stators; Testing; Torque;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.753795

Filename

753795