Title :
Modeling and optimal controllers design for a stand-alone photovoltaic-diesel generating unit
Author :
Abdin, E.S. ; Osheiba, A.M. ; Khater, M.M.
Author_Institution :
Dept. of Electr. Eng., Menoufia Univ., Egypt
fDate :
9/1/1999 12:00:00 AM
Abstract :
This paper presents the dynamic modeling and optimal controllers design for a stand-alone photovoltaic-diesel generating unit. To limit the continual variation on load-bus voltage and frequency and to extract the maximum power from the photovoltaic generator, two optimal PI controllers are designed based on state and output feedback techniques. The dynamic behaviour of the closed-loop system following common disturbances such as load changes, insolation variation due to clouds and three phase short circuit is investigated. The simulation results show the capability of the closed-loop system for limiting the load-bus voltage and frequency variations within acceptable levels and extracting the maximum power from the PV generator under insolation variation can be realized
Keywords :
closed loop systems; control system synthesis; diesel-electric generators; optimal control; photovoltaic power systems; power generation control; short-circuit currents; state feedback; two-term control; closed-loop system; dynamic modeling; insolation variation; load-bus frequency; load-bus voltage; maximum power extraction; optimal PI controllers; optimal controllers design; output feedback technique; stand-alone photovoltaic-diesel generating unit; state feedback technique; three phase short circuit; Circuits; Clouds; Frequency; Optimal control; Output feedback; Photovoltaic systems; Power generation; Power system modeling; Solar power generation; Voltage control;
Journal_Title :
Energy Conversion, IEEE Transactions on
