Electrical energy control method and apparatus for photovoltaic system
US10637252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Jul 23, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical energy control method and an electrical energy control apparatus for a photovoltaic system are provided. With the electrical energy control apparatus, a photovoltaic module meeting a preset electrical energy reverse flow condition is controlled to receive electrical energy stored on a direct current capacitor of the electrical energy control apparatus. That is, the photovoltaic modules are separately controlled to be heated by corresponding electrical energy control apparatuses, so as to avoid the issue in conventional technologies that, due to unified heating, excessive reverse power is received by some modules and causes performance degradation or damage of the modules, thereby ensuring that each of the photovoltaic modules is safely and reliably controlled to be heated for snow melting and deicing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.