Control of single-phase power converter in D-Q rotating coordinates
US6621252B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jan 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53875
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Imaginary orthogonal circuit state variables are established to enable transformation of real circuit state variables of a single-phase converter or the zero-sequence circuit of a three-phase converter from stationary coordinates to DQ rotating coordinates, thereby transforming the sinusoidal steady-state operating point of the real circuit into a DC operating point. A control provides the imaginary circuit state variables in a shifted queue comprising memory blocks for storing quarter-cycle shifted real circuit variables. Control of the converter is thus implemented in rotating DQ coordinates to achieve a theoretically infinite control loop gain at the fundamental frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.