A three-level buck converter to regulate a high-voltage DC-to-AC inverter

A three-level buck converter is designed and analyzed, and shown to be suitable as a high-voltage down converter as a pre-regulation stage for a 600 watt DC-to-AC power inverter. Topology selection for the inverter is examined, and a three-stage system is chosen to satisfy high voltage (1.1 kV), isolation, size, and efficiency requirements. Control of the buck converter is discussed in detail, including advanced features that allow extremely low output voltages in unloaded conditions. Optimization is included for both magnetics and switching losses. A prototype of the three-level buck converter is shown to perform as expected and meet all specifications.

Department dc:contributor.department

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

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2008

Author dc:creator

• Schrock, Kenneth C

Advisor dc:contributor.advisor

• James C. Mayes and 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/1721.1/46505

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/46505