The Novel Control Method for Photovoltaic Converter to the National Grid

Authors

1 Department of Engineering, Ahar Branch, Islamic Azad University, Ahar, Iran

2 Department of Engineering, Ardabil Branch, Islamic Azad University, Ardabil, Iran

Abstract

In this paper, a novel control method for photovoltaic converter connection to the national grid
is presented, so in addition to the injection control by solar arrays to the grid, this method can
compensate reactive power and harmonics in the load current. The system will be connected in
parallel between the grid and load. The proposed system supplies all load power consumption
(including active power and reactive power) and if less power is produced by the solar array
inverters, the proposed method can be used to compensate the remaining reactive power and
harmonics of load. Using this method, power factor of the system will be equal to unity. Finally, to
verify the performance of the method, a grid-connected photovoltaic system is simulated.

Keywords


[1] F.M. Ishengoma and L.N. NorAm, (2002).“Degin
and implementation ofdigitally controlled stand –
alonephotovoltaic power supply”, NRPIE.
[2] H. Akogi, Y. Kansawa and A.Noble
“Instantaneous
reactivePowercompensationcomprisingswitching
deviceswithoutenergycomponents“,IEEEtrans.In
d,Appl,IA-20(3) -625- 630
[3] H. Watanabe, T. Shimizu. And G.Kimura(1998).
“A novel utility interactivephotovoltaic inverter
withgeneration control circuit” IEEE.
[4] H. Sugimoto and H. Dong, (1997).“A Newscheme
for maximum photovoltaicpower tracking
control” IEEE.
[5] Ishikawa T. (2002).Grid-connected photovoltaic
power systems: survey of inverter and related
protection equipments. Report IEA (International
Energy Agency) PVPS T5-05.
[6] K. Masoud and G. Ledwich, “Aspects of grid
interfacing: currentand voltage controllers”
Proceeding of AUPEC 99, PP258-263
[7] L.A. Moran, L. Fernandez, J.W.Dixon, (1997).
“A simple and low costcontrol strategy for Active
powerfilters connected in cascade”, IEEE Trans,
on power Electronic, vol44.
[8] L. Malesani, P. Tenti, E. Gaia andR. Piovon,
(1991).“Improved currentcontrol technique of
VSI PWMInverters with constant
modulatingfrequency and extended voltagerang”,
IEEE trans, Ind. Applicant,vol. 27, no 2 PP.365.
[9] L.J. Borle, M.S. Dumont and C.V.Nayer,
(1997).“Development and testing ofa power
conditioning system inWestern Australia”, IEEE
transaction on industry applications 33, 1-7.
[10] M. Andersen and T.B. Alvsten(1995).“200W low
cost module integratedwittily interface for
modularphotovoltaic energy systems”, IEEE.
[11] M.F. Rahman and L. Zhong(1997).“A
new,transformer less photovoltaic arrayto utility
grid interconnection”IEEE.
[12] P. Jintakosonwit, H. Fujita and H.Akaka,
(2002).“Control and performance ofa fully –
Digital - controlled shuntActive filters for
installation on apower distribution systems”,
IEEE Trans. On power electronics.
[13] S. Kim, G.Yoo and J. song (1996). “A
Bifunctional utility connectedphotovoltaic
systems with powerfactor correction and
U.P.S.facility”, IEEE.
[14] V.E. Wagner, (1993). “Effect of harmonicson
equipments”, IEEE Trans. Power Delivery, vol8,
pp.672-680.
[15] W. Teulings, J.C. Marpinard, A.capel and D.O
Sullivan (1993). “A Newmaximum power point
Trackingsystem”, IEEE.
[16] Z. Sallameh and D. Taylor, (1990).“stepupmaximum
power point Tracking for
photovoltaic Arrays”, solar Energy, vol. 44, No.1,
P.57.