Title :
Study of buck-boost photovoltaic inverter based on discrete sliding mode control strategy
Author_Institution :
Dept. of Commun. & Eng., Hunan Univ. of Humanities & Sci. & Technol., Loudi, China
Abstract :
In order to obtain excellent sinusoidal output voltage and optimize performance of inverters, discrete sliding mode control strategy based on buck-boost inverter is adopted in this paper. Buck-boost photovoltaic inverter can obtain AC output voltage higher than or lower than input DC voltage. The operation principle is analyzed in detail and the mathematics model is founded by the state-space average method. Detail the discrete sliding mode control theory. The simulation studies of the control system are constructed by Matlab/Simulink tool. Simulation results indicate that buck-boost inverters provide good robustness to system disturbance and load change, and the system also has good dynamic response.
Keywords :
dynamic response; invertors; photovoltaic power systems; power generation faults; robust control; state-space methods; variable structure systems; AC output voltage; Matlab-Simulink simulation tool; buck-boost photovoltaic inverter; discrete sliding mode control strategy; dynamic response; input DC voltage; load change; mathematics model; sinusoidal output voltage; state-space average method; system disturbance; Equations; Inverters; Load modeling; Mathematical model; Photovoltaic systems; Sliding mode control; Voltage control; Buck-Boost converter; PV inverter; discrete sliding mode control; simulation;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5987269
