TS fuzzy output control for a boost converter in PV systems

This paper presents fuzzy output tracking control of switching photovoltaic (PV) DC-DC converters. The proposed control ensures good performances and overall large-signal stability of the system over the whole operating space. To do this, we present a model of PV system and a state space model for DC-DC boost converter. Then, we introduce an added integral state of the output tracking error. The resulting augmented system is converted into a Takagi sugeno fuzzy model (TSFM). The Parallel distributed compensation (PDC) concept is employed to design the state-feedback based control law whereby the control gains are fined using the linear quadratic regulator (LQR) technique. Finally, the design procedures are applied to a dynamics model of typical PV power control system using a DC-DC boost converter to illustrate the effectiveness of the proposed control techniques.