Title :
Novel MIMO linear zero dynamic controller for the grid-connected photovoltaic system with weather disturbances
Author :
Ali, Md Sharafat ; Pota, Hemanshu R. ; Mahmud, M.A. ; Hossain, Md Jahangir
Author_Institution :
Sch. of Eng. & Inf. Technol. (SEIT), Univ. of New South Wales at Australian Defence Force Acad. (UNSW@ADFA), Canberra, ACT, Australia
Abstract :
This paper proposed a novel multi-input multi-output (MIMO) linear zero dynamic controller (LZDC) for a three-phase grid-connected photovoltaic (PV) system. The relative degree is investigated through the concept of Lie derivative to execute the LZDC for three phase grid connected PV system. To implement the control theory, system stability is checked by the LZDC scheme. The linear zero dynamic control law is obtained to control the injected power into the grid through the system´s inverter. Finally, the simulation results are presented to show the performance of MIMO LZDC scheme with weather disturbances such as 10%, 20%, and 30% sunshade on the PV strings and also proved that the system operated at the unity power factor.
Keywords :
MIMO systems; invertors; linear systems; phase control; photovoltaic power systems; power control; power factor; power generation faults; power grids; power system stability; MIMO LZD; PV system; inverter; multiinput multioutput linear zero dynamic controller; power control; system stability; three-phase grid-connected photovoltaic system; unity power factor; weather disturbance; Equations; MIMO; Mathematical model; Photovoltaic systems; Power system dynamics; Power system stability; Stability analysis;
Conference_Titel :
Power and Energy Society General Meeting (PES), 2013 IEEE
Conference_Location :
Vancouver, BC
DOI :
10.1109/PESMG.2013.6673016
