Control method and device for AC motor
US5184057A · kind A · utility
25Cited by
5References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Sep 13, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/4585
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a control method and device for an AC motor, when transforming output power of a converter to AC power by an inverter and controlling the AC motor with the AC power, a source current value is determined from the value of an electric variable in the input or output side of the inverter, and the converter is controlled in accordance with the source current value. This makes the source current free from an influence of ripple components. Accordingly, even when the load of the AC motor is fluctuated abruptly, the required AC power can be applied to the converter so as to follow such fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.