Title :
Control of a buck inverter for grid-connected PV systems: a digital and sliding mode control approach
Author :
Negroni, J.J. ; Meza, C. ; Biel, D. ; Guinjoan, Francesc
Author_Institution :
Dept. of Electron. Eng., UPC, Barcelona, Spain
Abstract :
This work describes the analysis, modeling and design of a buck-based inverter control for grid-connected photovoltaic (PV) systems. On one hand a linear digital voltage controller is designed from a large-signal linear sampled-data model of the system to maximize the steady-state input-output energy transfer ratio. On the other hand, a sliding-mode current controller is also designed to assure a unity power factor. The achievement of the DC-AC conversion and the efficient PVs energy extraction are validated with simulation results.
Keywords :
DC-AC power convertors; control engineering computing; control system synthesis; digital control; invertors; photovoltaic power systems; power engineering computing; power generation control; power grids; variable structure systems; voltage control; DC-AC conversion; buck inverter control; digital control; grid-connected PV systems; grid-connected photovoltaic systems; large-signal linear sampled-data model; linear digital voltage controller; sliding mode control approach; sliding-mode current controller; unity power factor; Control systems; Digital control; Energy exchange; Inverters; Photovoltaic systems; Power system modeling; Sliding mode control; Solar power generation; Steady-state; Voltage control;
Conference_Titel :
Industrial Electronics, 2005. ISIE 2005. Proceedings of the IEEE International Symposium on
Conference_Location :
Dubrovnik, Croatia
Print_ISBN :
0-7803-8738-4
DOI :
10.1109/ISIE.2005.1529007
