Designing a Single-Stage Inverter for Photovoltaic System Application

This paper focuses on a full-bridge high-frequency isolated inverter which is proposed for distributed photovoltaic power supply application. The researched system consists of a full-bridge high-frequency DC/DC converter with the proposed symmetric phase-shift modulation algorithm to achieve the ZVS...

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Bibliographic Details
Published in:Mathematical problems in engineering 2013-01, Vol.2013 (2013), p.1-8
Main Authors: Lin, J. Y., Mi, C. M., Chu, C. L., Tsai, M. T., Hsueh, Y. C.
Format: Article
Language:English
Subjects:
Algorithms
Alternative energy sources
Bridges
Control algorithms
Design
Direct current
Efficiency
Electric converters
Electric power distribution
Electricity distribution
Electrolytes
Functions (mathematics)
Inverters
Mathematical analysis
Mathematical problems
Maximum power
Microprocessors
Photovoltaic cells
Power supplies
Signal processing
Solar cells
Voltage converters (DC to DC)
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Summary:This paper focuses on a full-bridge high-frequency isolated inverter which is proposed for distributed photovoltaic power supply application. The researched system consists of a full-bridge high-frequency DC/DC converter with the proposed symmetric phase-shift modulation algorithm to achieve the ZVS switching function and a line frequency unfolding bridge. It replaces the traditional two stages of independent control algorithms with a one-stage control to obtain high conversion efficiency. A TMS 320F2812 digital signal processor-based control technique is used to achieve the desired algorithm function for the grid-connected photovoltaic power system application. The researched system can have two operating methods depending on the applied situation. Finally, a prototype of 300 W with the maximum power point function is settled to verify the proposed idea.
ISSN:1024-123X
1563-5147
DOI:10.1155/2013/912487