Influence of neutral line to optimal drive current of PM AC motor

Author

Chao Bi ; Quan Jiang ; Cheng Su Soh ; Na Phyu Hla ; Yinqun Yu ; Nay Lin Htun Aung ; Song Lin

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

1

Lastpage

2

Abstract

The optimal drive current (ODC) can reduce the torque ripple and power loss of the permanent magnetic AC motor (PMACM). The paper presents an analytical model for calculating the optimal drive current of the PMACM with surface mount PM rotor. Both the motors with and without the neutral line are analyzed. Analysis shows that, when the back-emf of the windings contains trip-order harmonics, the neutral line can let the ODC be different from the one without the neutral line, and it can also make the ODC be more effective in loss and torque ripple reduction. Two spindle motors used in Hard disk drive are used to show the effectiveness of the optimal model presented.

Keywords

AC motors; disc drives; hard discs; micromotors; permanent magnet motors; rotors; torque; ODC; PM AC motor; back-emf; hard disk drive; neutral line; optimal drive current; permanent magnetic AC motor; power loss; spindle motors; surface mount PM rotor; torque ripple reduction; trip-order harmonics; AC motors; Analytical models; Disk drives; Permanent magnet motors; Torque; PM AC motor; Spindle motor; hard disk drive; optimal; power loss; torque ripple;

fLanguage

English

Publisher

ieee

Conference_Titel

APMRC, 2012 Digest

Conference_Location

Singapore

Print_ISBN

978-1-4673-4734-1

Type

conf

Filename

6407597