NDLI: High-efficiency grid-connected photovoltaic module integrated converter system

Content Provider	IEEE Xplore Digital Library
Author	Woo-Young Choi Bong-Hwan Kwon Jih-Sheng Lai
Copyright Year	2009
Description	Author affiliation: Pohang University of Science and Technology, South Korea (Bong-Hwan Kwon) \|\| Virginia Polytechnic Institute and State University Future Energy Electronics Center 106 Plantation Road, Blacksburg, VA, 24061, USA (Woo-Young Choi; Jih-Sheng Lai)
Abstract	This paper presents a high-efficiency grid-connected photovoltaic (PV) module integrated converter (MIC) system. The proposed PV MIC system consists of a high step-up dc-dc converter and a single-phase full-bridge dc-ac inverter. A flyback dc-dc converter with a high step-up ratio is proposed to convert the low PV module voltage into a high dc-link voltage. The full-bridge inverter performs the maximum power point tracking (MPPT) function, supplying the electrical power to the grid. To reduce the PV ripple current variation introduced by the inverter, a PV power decoupling control is introduced. To produce a smooth transition to the maximum power point, an improved sensorless MPPT control is suggested. To supply the electrical power to the grid with unity power-factor, a simple current controller is also presented. The proposed step-up dc-dc converter achieves an efficiency of 97 % at 260 W output power to generated 350V output voltage for 36 V PV module voltage. The overall system including the dc-dc converter and the full-bridge inverter achieves an efficiency of 94.5 % with ripple current less than 3 % of the rated input current.
Starting Page	731
Ending Page	736
File Size	616751
Page Count	6
File Format	PDF
ISBN	9781424446483
ISSN	1553572X
e-ISBN	9781424446506
DOI	10.1109/IECON.2009.5415010
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-03
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DC-DC power converters Microwave integrated circuits Inverters Voltage Sensorless control Power generation Costs Control systems Photovoltaic systems Solar power generation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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