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http://dx.doi.org/10.5370/JEET.2010.5.4.606

Design and Implementation of Photovoltaic Power Conditioning System using a Current-based Maximum Power Point Tracking  

Lee, Sang-Hoey (Department of Electrical Engineering Chungnam National University)
Kim, Jae-Eon (Department of Electrical Engineering Chungbuk National University)
Cha, Han-Ju (Department of Electrical Engineering Chungnam National University)
Publication Information
Journal of Electrical Engineering and Technology / v.5, no.4, 2010 , pp. 606-613 More about this Journal
Abstract
This paper proposes a novel current-based maximum power point tracking (CMPPT) method for a single-phase photovoltaic power conditioning system (PV PCS) by using a modified incremental conductance method. The CMPPT method simplifies the entire control structure of the power conditioning system and uses an inherent current source characteristic of solar cell arrays. Therefore, it exhibits robust and fast response under a rapidly changing environmental condition. Digital phase locked loop technique using an all-pass filter is also introduced to detect the phase of grid voltage, as well as the peak voltage. Controllers of dc/dc boost converter, dc-link voltage, and dc/ac inverter are designed for coordinated operation. Furthermore, a current control using a pseudo synchronous d-q transformation is employed for grid current control with unity power factor. A 3 kW prototype PV PCS is built, and its experimental results are given to verify the effectiveness of the proposed control schemes.
Keywords
Single-phase photovoltaic power conditioning system; Digital phase locked loop; dc/dc boost converter; dc/ac inverter; CMPPT; dP/dI;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 3
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