Controlling an inverter to emulate synchronous generator under fault conditions
US12095257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2021 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Mar 24, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/539
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for operating an inverter of an inverter-based power resource providing electric power to a grid through one or more transformers. The method includes measuring voltages associated with terminals on a selected primary winding and/or measuring voltages associated with terminals on a selected secondary winding; and injecting currents into the primary terminals of the selected primary winding during a fault condition based on the measured voltages being indicative of the type of fault occurring. Preferably the inverter is operated to emulate at least some characteristics of fault currents provided by a generator having rotating magnets or electrical windings. An apparatus is configured to operate in accordance with the method and includes an electrical switching device circuit having input terminals for an inverter-based power resource and output terminals for providing AC electric power to an electric power grid. An inverter controller operates the electrical switching device circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.