Method and system for driving a three-phase motor in a mass storage device
US6008611A · kind A · utility
5Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of driving an electric motor includes generating a periodic, driving voltage. The driving voltage comprises a sequence of first, second, and third waveforms. The first waveform in the sequence is a generally constant, high voltage. The second waveform in the sequence is a down hook voltage. The third waveform in the sequence is an up hook voltage. The method also includes applying the driving voltage to a coil of the motor to generate a generally sinusoidal current through the coil of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.