V/F control method for suppressing current oscillation of induction motor
US10135378B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2014 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Feb 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a V/F control method for an induction motor comprising: extracting a reactive current and an active current and performing a differential calculation on them respectively to obtain a differential of the reactive current and a differential of the active current; multiplying the differential of the reactive current and the differential of the active current by a first coefficient and a second coefficient respectively; obtaining the sum of the result of multiplying the differential of the reactive current by the first coefficient and the result of multiplying the differential of the active current by the second coefficient; applying low-pass filtering on the sum to obtain a compensation; and superposing the compensation onto an original given angular frequency to perform V/F control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.