A stacked full-bridge microinverter topology for photovoltaic applications

Previous work has been done to develop a microinverter for solar photovoltaic applications consisting of a high-frequency series resonant inverter and transformer section connected to a a cycloconverter that modulates the resonant current into a single-phase 240 VRMS utility line. This thesis presents a new stacked full-bridge topology that improves upon the previous high-frequency inverter section. By utilizing new operating modes to reduce the reliance on frequency control and allowing for the use of lower blocking voltage transistors, the operating frequency range of the HF inverter is reduced and efficiency is increased, especially at low output powers and lower portions of the line cycle. The design of an experimental prototype to test the stacked full-bridge HF inverter topology is presented along with test results that demonstrate the success of the topology. Future improvements to increase performance are also suggested.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2012

Author dc:creator

• Yogeswaran, Kesavan

Advisor dc:contributor.advisor

• David J. Perreault.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/85805

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/85805