Current detecting method
US5341286A · kind A · utility
16Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current detecting method in a case of effecting the digital current control of a motor by a PWM switching system, wherein the current feedback control time and the PWM period are synchronized, and the current for each of the current taking in PWM periods at a time established with respect to the reference signal for determining the PWM period is detected, so that the influence of the pulsation of the current by the PWM switching system may be reduced, and the performance improvement in the digital current feedback control may be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.