Virtual synchronous inverter with fast transient inrush fault currents restraining method thereof
US10879785B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jan 7, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jan 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fault inrush transient current restraining type virtual synchronous inverter and thereof is disclosed. The invention solves the problem that a virtual synchronous inverter will be burned due to inrush transient current in an extreme situation of a symmetrical fault occurring on the grid side by setting an information collection module for inverter output voltages and currents, a virtual synchronous inverting control module, a fault detection and synthesize module, a hysteresis comparison control module and a post fault clearing switch back grid-tie control module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.