Abstract
Due to its random power production behavior, besides some loads’ nonlinearity and variation, the photovoltaic (PV) systems control is a significant part that must be taken into consideration. In this context, the present paper investigates a fuzzy integral sliding mode control (fuzzy-ISMC) strategy applied to an H-bridge inverter dedicated to a PV application. The designed scheme is intended to ensure robust, soft, and smooth reference tracking for the reactive and active power as well as insensitivity to system parameter uncertainties and external disturbances. Aiming at this, the mathematical model of the studied system has been built, and the developed control signals are verified using Lyapunov stability theory. To assess the reliability and performance of the proposed control method, a numerical simulation has been carried out through MATLAB/ Simulink software for three suggested scenarios, in addition to experimental validation employing Dspace 1104 controller board and a PV source. The achieved results demonstrate that the proposed controller can combine the benefits of the ISMC and those of the linear controller in terms of total harmonic distortions (THD) and robustness against environmental and load variations.
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Abbreviations
- V ref :
-
Reference AC voltage
- V i :
-
Inverter output voltage
- L f :
-
Filter inductance
- I o :
-
Inverter output current
- r :
-
Inductance internal resistance
- V L :
-
Load voltage
- I odq :
-
D-q components of output current
- ω :
-
Angular frequency of reference voltage
- V idq :
-
D-q components of inverter output voltage
- P :
-
Output active power
- Q :
-
Output reactive power
- R :
-
Load resistance
- P dq :
-
External disturbance terms
- α dq :
-
Switching gains
- e dq :
-
Error terms
- I odqref :
-
D-q components of reference current
- S dq :
-
Sliding surface terms
- K dq :
-
Tuning gains
- V idqeq :
-
D-q components of equivalent control input
- ε :
-
Damping constant
- V idqn :
-
D-q components of nonlinear control input
- V Lydq :
-
Lyapunov function terms
- Y sw :
-
Fuzzy inference system output
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Funding
This work was supported by the Research Centre for Engineering in Smart and Sustainable Systems of the Mohammadia School of Engineering (EMI), Mohammed V University in Rabat (UM5R), and the National Center for Scientific and Technical Research (CNRST), Rabat, Morocco.
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KC was in charge of the numerical and experimental implementation, investigation, conceptualization, data analysis, methodology, and writing of the original draft. MO was responsible for the supervision, reviewing, editing, visualization, validation, and resources. All authors read and approved the final manuscript.
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Chigane, K., Ouassaid, M. Experimental power control of a single-phase DC/AC converter using fuzzy integral sliding mode approach for photovoltaic systems. Int. J. Dynam. Control 12, 494–513 (2024). https://doi.org/10.1007/s40435-023-01198-2
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DOI: https://doi.org/10.1007/s40435-023-01198-2