A Grid Connected Flyback Inverter with a DC Active Filter for Photovoltaic Cells

Abstract:

This paper presents the design and control of a grid-connected flyback inverter with a DC active filter for photovoltaic (PV) cells. The proposed topology consists of a flyback DC-AC inverter and a DC active filter that can operate independently. The flyback inverter, controlled in digital peak current mode, regulates the full-wave rectified sinusoidal current later, which is alternately inverted and injected into the grid. The DC active filter regulates the smooth current/power drawn from a PV module by using cascaded proportional-integral (PI) controllers. Analysis, design and control of the proposed topology are presented. A 100W/220V/50Hz prototype is developed and tested. The experimental results show that the proposed flyback inverter with a DC active filter is capable of regulating a sinusoidal current fed into the grid, actively filtering the DC current/power and achieving reasonably high energy conversion efficiency.

• Periodical: Applied Mechanics and Materials (Volume 781)
• Pages: 406-409
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.781.406
• Online since: August 2015
• Authors: Dome Sulong, Chuttchaval Jeraputra*
• Keywords: Active Filter, Flyback, Grid-Connected, Photovoltaic Cell

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