Power system having repetitive control in symmetric sequences with harmonics cancellation
US9048726B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Sep 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53876
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control system for a power drive section of a three-phase system is disclosed. The control system comprises a positive sequence channel, a negative sequence channel, and a zero sequence channel. The positive sequence channel processes positive sequence error signals, the negative sequence channel processes negative sequence error signals, and the zero sequence channel processes zero sequence error signals. Each sequence channel includes a harmonic repetitive controller, a repetitive controller compensator, and a fundamental frequency controller configured to operate in parallel with the harmonic repetitive controller and repetitive controller compensator. Both the repetitive controller compensator of the negative sequence channel and the repetitive controller compensator of the positive sequence channel are configured with the same, first frequency response. The repetitive controller compensator of the zero sequence channel is configured with a second frequency response that is different from the first frequency response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.