DocumentCode :
132460
Title :
A comprehensive study of autonomous PV system with battery storage providing power for a general AC load
Author :
Khayamy, Mehdy ; Ojo, Olorunfemi ; Sota, Eseme
Author_Institution :
Electr. Machines & Power Electron. Lab., Tennessee Technol. Univ., Cookeville, TN, USA
fYear :
2014
fDate :
16-20 March 2014
Firstpage :
699
Lastpage :
706
Abstract :
In this paper, an autonomous photovoltaic (PV) power generation/storage system connected to an AC nonlinear load is investigated. Depending on the load demand, the PV output power and the battery condition, five modes of operation are feasible with the changing load power. The steady-state analysis of the system for the entire operating modes is presented. Based on the concept of controllability sensitivity, the influence of the input variables on the state variables is obtained. How the estimated states for feedback control contribute in the measured variables is also explored using the observability sensitivity concept. In view of these findings, an input-output nonlinear PID controller scheme is designed to control the overall system. A computer simulation of the controlled power system using the MATLAB/Simulink software demonstrates the effectiveness of the control method.
Keywords :
battery storage plants; load flow control; nonlinear control systems; photovoltaic power systems; three-term control; AC nonlinear load; MATLAB-Simulink software; autonomous photovoltaic power generation system; battery storage; controllability sensitivity; feedback control; input variables; input-output nonlinear PID controller scheme; load demand; load power; operating modes; power storage system; state variables; steady-state analysis; Batteries; Equations; Generators; Inverters; Mathematical model; Power generation; Steady-state;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
Type :
conf
DOI :
10.1109/APEC.2014.6803384
Filename :
6803384
Link To Document :
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