Title :
A cascade control scheme for hybrid photovoltaic power system
Author :
Cositore, F. ; Manfredi, S. ; Pagano, M. ; Roscia, M.
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Univ. of Naples, Naples, Italy
Abstract :
The paper discusses on a control algorithm applied to a hybrid PV power system. The hybrid power system is constituted by directly connecting an Electric Double Layer Capacitor (EDLC) device on the dc output bus of the PV Maximum Power Point Tracker (MPPT) converter. The aim of this paper is to propose a control approach applied to the dc power converter able to assure a double set-point regulation, which takes into account the operational constraints of both the PV power source and storage buffer. Control design is based on a cascade strategy. The controller parameters are synthesize basing on the State Space Averaging (SSA) method and low perturbation approach. A numerical simulator is set up in ®Matlab. The results of simulations aim to validate the features of the proposed approach.
Keywords :
cascade control; control system synthesis; maximum power point trackers; numerical analysis; photovoltaic power systems; power capacitors; power generation control; state-space methods; EDLC device; Matlab; PV MPPT converter; PV maximum power point tracker converter; PV power source; PV power storage buffer; SSA method; cascade control scheme; control design; controller parameter synthesis; dc power converter; double set-point regulation; electric double layer capacitor device; hybrid photovoltaic power system; low perturbation approach; numerical simulator; operational constraints; state space averaging method; Buffer storage; Capacitors; Hybrid power systems; Switches; Transfer functions; Voltage control; PV power source; cascade control scheme; electric double layer capacitor storage device; hybrid system;
Conference_Titel :
Clean Electrical Power (ICCEP), 2015 International Conference on
Conference_Location :
Taormina
DOI :
10.1109/ICCEP.2015.7177535
