Title :
Control strategy for grid-connected DC-AC converters with load power factor correction
Author :
Barbosa, P.G. ; Rolim, L.G.B. ; Watanabe, E.H. ; Hanitsch, R.
Author_Institution :
COPPE, Univ. Federal do Rio de Janeiro, Brazil
fDate :
9/1/1998 12:00:00 AM
Abstract :
The paper presents the modelling, analysis and design of a pulse width modulation voltage source inverter (PWM-VSI) to be connected between a DC source, which is supplied from a photovoltaic (PV) array and the AC grid. The control algorithm of the PWM-VSI applies the concepts of the instantaneous p-q (real-imaginary) power theory. The objective is to show that, with adequate control, the power converter can transfer the DC energy from a PV array and improve the power factor (and the power quality) of the electrical system. Some design considerations are also discussed. A digital simulation and measurements on a small prototype model verified the feasibility of the proposed control method
Keywords :
DC-AC power convertors; PWM invertors; control system analysis computing; control system synthesis; load flow; photovoltaic power systems; power factor correction; power supply quality; power system analysis computing; power system control; power system interconnection; solar cell arrays; voltage control; DC energy; PV arrays; PV power systems; PWM VSI; computer simulation; control algorithm; control design; control simulation; control strategy; design considerations; grid-connected DC-AC converters; instantaneous p-q power theory; load power factor correction; power factor improvement; power quality;
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings-
DOI :
10.1049/ip-gtd:19982174
