Per Panel Photovoltaic Energy Extraction with Multilevel Output DC-DC Switched Capacitor Converters

CTCN Keyword Matches
Technology

Problem: Electrolytic capacitors and per panel magnetics have limited lifetime and are expensive. Technology: This invention proposes per-panel Maximum Power Point Tracking (MPPT) for widespread solar arrays. A full system approach is presented utilizing switched capacitor multi-level DC-DC and a central ripple-port inverter to replace the multiple inductors used in current PV technology.

Benefits

1) Substantial cost reduction and prolonged lifetime 2) Average total efficiencies of tracking and conversion greater than 93% for a 510 W 3 panel DC-DC system

Date of release