Novel AC Side P&O Maximum Power transfer control for Grid Connected Photovoltaic Systems

Authors

  • M. Hanif Author
  • M. Basu Author
  • K. Gaughan Author

DOI:

https://doi.org/10.24084/repqj08.443

Abstract

Grid connectedPhotovoltaic inverters can convert PV  energy  into  electricity  with  very  high  efficiencies.  Power from  the  PV  panels  fluctuates  depending  on  various  weather conditions.  PV  inverters  usually  include  a  maximum  power point  tracker  (MPPT)  to  track  this  varying  power,  in  order  to transfer  all  the  available  power  to  the  grid  efficiently.  Control of  power  transferred  to  the  grid  along  with  the  MPPT  plays  a crucial role in determining the efficiency of a PV system.  This  paper  discusses  about  the  basic  power  transfer  theory between  sources  (PV  and  Grid)  and  focuses  on  the  need  of  a DC-DC  boost  circuit, along  with  a  DC-AC  inverter  to  transfer maximum  power  from  the  PV  to  the  grid.  A  commonly  used approach  for  transferring  the  maximum  power  from  the  PV  to the  grid  at  all  times  will  be  briefed  and  a  new  approach proposed. Now  reference  current  calculation  can  work  using  a  Master-Slave  principle  where  the  DC-DC  converter  and  the  inverter could  act  as  the  master  or  slave  and  vice  versa,  after  the  new proposed approach is introduced. The    new    approach    would    not    require    any    DC    side measurements   for   MPP   tracking   making   it   a   sensor   less approach. Comparative  conclusion  between  ease  of  implementation  and effectiveness of the above two approaches are given. 

Author Biographies

  • M. Hanif

    Department of Electrical Engineering Systems

    Dublin Institute of Technology

    Kevin Street, Dublin 8, Ireland

    Phone/Fax number: 0035314022814, 00353851195632 e-mail: mohamed.hanif@dit.ie

  • M. Basu

    Department of Electrical Engineering Systems

    Dublin Institute of Technology

    Kevin Street, Dublin 8, Ireland

    Phone/Fax number: 0035314022814, 00353851195632 e-mail: mbasu@ieee.org

  • K. Gaughan

    Department of Electrical Engineering Systems

    Dublin Institute of Technology

    Kevin Street, Dublin 8, Ireland

    Phone/Fax number: 0035314022814, 00353851195632

Downloads

Published

2024-01-24

Issue

Section

Articles