Energy storage system, and device for controlling ground structure of energy storage system
US12424869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jan 6, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Discussed is an energy storage system connected with a power grid, and including: a photovoltaic (PV) system; a power conversion system to be connected with the power grid and selectively connected to the photovoltaic system; a first switch to selectively connect the photovoltaic system and a direct current (DC) link of the power conversion system; a first ground fault detector including a terminal connected to a ground; a second switch selectively to connect the photovoltaic system and another terminal of the first ground fault detector; and a switch controller to change a ground structure of at least one of the photovoltaic system, the power conversion system, and a battery system included in the energy storage system and to selectively connect the photovoltaic system and the DC link, by controlling the first switch and the second switch based on a power generation state of the photovoltaic system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.