A Novel Microcontroller for Grid-Connected Photovoltaic Systems
Koizumi, H.
Mizuno, T.
Kaito, T.
Noda, Y.
Goshima, N.
Kawasaki, M.
Nagasaka, K.
Kurokawa, K.
Tokyo Univ. of Agric. & Technol.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Dec. 2006
Volume: 53,
Issue: 6
On page(s): 1889-1897
ISSN: 0278-0046
INSPEC Accession Number: 9201859
Digital Object Identifier: 10.1109/TIE.2006.885526
Current Version Published: 2006-11-30
Abstract
The purpose of this paper is to develop a novel microcontroller for grid-connected photovoltaic (PV) systems. As a prototype model, a 100-W-class module-integrated converter composed of the proposed controller and a flyback inverter has been built and tested. The prototype model is designed to satisfy the Japanese grid-connection guideline. Basic functions as those of a grid-connected PV inverter, such as the maximum-power-point tracking and the anti-islanding protection, have been confirmed in the experiments using a distribution network simulator located in a laboratory. This paper presents the description of the controller and the experimental results. A microcontroller has been developed with a 50-MHz-class microcomputer and simple interfaces. By revising the program, the proposed controller can be applied to various types of PV systems or grid-connected equipment
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