High efficiency DC/AC power converter for photovoltaic applications
Name
681920509-MIT.pdf
Description
Full printable version
Size
14.6 MB
Format
Adobe PDF
Checksum (MD5)
b4010bef914aa63780d89954eceb7b03
Author(s)
Trubitsyn, Aleksey
Advisor(s)
David J. Perreault.
Alternative Title
High efficiency direct current/alternating current power converter for photovoltaic applications
Date Issued
2010
Publisher
Massachusetts Institute of Technology
Abstract
This thesis presents the development of a microinverter for single-phase photovoltaic applications that is suitable for conversion from low-voltage (25-40V) DC to high voltage AC (e.g. 240VAC,RMS). The circuit topology is based on a full-bridge series resonant inverter, a high-frequency transformer, and a novel half-wave cyclo-converter. The operational characteristics are analyzed, and a multidimensional control technique is utilized to achieve high efficiency, encompassing frequency control and inverter and cyclo-converter phase shift control. An experimental prototype is demonstrated in DC/DC conversion mode for a wide range of output voltages. The proposed control strategy is shown to allow for accurate power delivery with minimal steps taken towards correction. The prototype achieves a CEC averaged efficiency of approximately 95.1%. Guidelines for optimization are presented along with experimental results which validate the method.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Includes bibliographical references (p. 217-218).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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