Method, system and storage medium for suppressing sub/super-synchronous oscillation for direct-drive wind turbine based on energy compensation
US12100953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Aug 27, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/76
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a method, system and storage medium for suppressing sub/super-synchronous oscillation for direct-drive wind turbine based on energy compensation. The method comprises: real-time collecting the bus voltage and the node injection current, obtaining the transient energy of direct-drive wind turbine; collecting the dynamic angle of PLL when the variation rate of the transient energy is positive, calculating the compensation energy and the increments of fundamental-frequency voltage of several supplementary energy branches based on the bus voltage and the node injection current and the dynamic angle of PLL; with the compensation energy of supplementary branches reaching the maximum and the increment of fundamental-frequency voltage being the minimum as the objective, and with the frequency-domain characteristic and fundamental-frequency voltage characteristic of control links being satisfied as the constraints, determining the compensation coefficients of supplementary energy branches, and then enabling the supplementary energy branches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.