Power conversion system, controller for the same, and method for controlling the same
US10998814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2020 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Feb 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion system, a controller for the same, and a method for controlling the same. The power conversion system includes a shutdown array and a power converter. The shutdown array includes multiple shutdown strings that are connected in parallel. Each of the multiple shutdown strings includes multiple shutdown devices, where outputs of the multiple shutdown devices are connected in series. An output terminal of the shutdown array is connected to an input terminal of the power converter. An input terminal of each of the multiple shutdown devices is connected to at least one direct-current power supply. The controller sends a shutdown instruction to each shutdown device of the shutdown array in response to receiving a rapid-shutdown command, controls the power converter to discharge an input capacitor of the power converter, and stops discharging the input capacitor in response to an input voltage of the power converter being reduced to a preset voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.