Systems and methods to perform electroluminescence and photoluminescence characterization in the field on photovoltaic modules, strings, and arrays
US12348186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Mar 6, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30108
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Photoluminescence and electroluminescence are essential characterization techniques for photovoltaics cells and modules. For electroluminescence, the main technical challenge is easily injecting current into the photovoltaic to cause luminescence. The technique described herein enables daylight electroluminescence imaging without the need for external power sources. For photoluminescence, characterization is performed on photovoltaic cells, modules, strings, and arrays in daylight and without temporary mounting of LED modulators. Instead, the modulation is performed using a permanent electronic module installed within the electric circuit on the DC side. This enables automation or triggering of modulation on demand, 100% inspection without changes in hardware configuration because the cells are never shaded and provides a path to high throughput imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.