Abstract
A novel maximum power point tracking (MPPT) approach for two-stage photovoltaic (PV) systems is proposed, which is a hybridization of Perturb & Observe (P&O) with a modified version of the Fractional Open Circuit Voltage (FOCV) algorithm. Differently from other hybrid algorithms which merge P&O with FOCV or Fractional Short Circuit Current (FSCC), the proposed algorithm enables direct duty cycle control (DDCC), which significantly reduces efficiency losses due to steady-state oscillations. Also unlike similar methods, it provides a mechanism for tracking the global maximum power point during partial shading (PS). Validation of the proposed method is carried out via computer simulations and a practical experiment, whose results show that it yields superior performance compared to commonly used MPPT algorithms and, on more detailed analysis, improves standard P&O efficiency by a large margin (up to 15% at uniform irradiance and 27% during PS). Furthermore, it outperforms a similar hybrid, but non-DDCC, algorithm by up to 7% in efficiency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Electrical Power & Energy Systems
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
