Multi-input shutdown device and control method therefor, and photovoltaic power generation system
US12395122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2022 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-input shutdown device, including: a first input port, configured to be coupled to a first photovoltaic unit; at least one second input port, configured to be coupled to a second photovoltaic unit, where the second photovoltaic unit includes at least one cell substring and a freewheeling diode connected in parallel to the cell substring; a first shutdown module including a first switching device and a first bypass device, where the first bypass device is configured to provide a bypass path for a power bus current when the first photovoltaic unit is abnormal; at least one second shutdown module, including a second switching device; and a control module, configured to control the second switching device to be turned on when the second photovoltaic unit is abnormal, so that the second switching device and the freewheeling diode in the second photovoltaic unit provide a bypass path for the power bus current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.