Publication Type
Conference Paper
Book Title
2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Publication Date
Page Numbers
468 to 474
Conference Name
2013 28th Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Conference Location
Long Beach, California, United States of America
Conference Date
-
Abstract
A three-phase modular cascaded H-bridge multilevel inverter for a grid-connected photovoltaic (PV) system is presented in this paper. To maximize the solar energy extraction of each PV string, an individual maximum power point tracking (MPPT) control scheme is applied, which allows the independent control of each dc-link voltage. PV mismatches may introduce unbalanced power supplied to the three-phase system. To solve this issue, a control scheme with modulation compensation is proposed. The three-phase modular cascaded multilevel inverter prototype has been built. Each H-bridge is connected to a 185 W solar panel. Simulation and experimental results are presented to validate the proposed ideas.
