Photovoltaics: yield-boosting solar inverter

CEA-Leti and CEA-Liten are joining forces to develop a low-loss inverter to boost photovoltaic solar panel conversion efficiency. Inverters transform the direct current PV panel output into alternating current compatible with domestic electricity networks.
The new inverter is built on 100V and 650V GaN on silicon power transistors. It is faster (150 kHz) and cuts losses by 40% (3% instead of 5%) compared to silicon components. Plus, the transistors can withstand higher temperatures (200 °C instead of 150 °C).
For rooftop installations, the inverter is compact enough to be integrated into every panel. It will primarily address the domestic-self consumption market.
A demonstrator will be presented at the upcoming Leti Innovation Days on June 21, 22, and 23.

Contact: camille.giroud@cea.fr

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