Cascade Control of Grid-Connected PV Systems Using TLBO-Based Fractional-Order PID

Badis, Afef; Mansouri, Mohamed; Boujmil, Mohamed Habib

doi:10.1155/2019/4325648

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…The used representation allows to understand the relations between all the system parameters and to conceive the system controllers. The maximum control structure (MCS) is deduced by inversion of the EMR and helps for modeling the control loops (Lhomme et al, 2012;Badis, Mansouri, & Boujmil, 2019).…”

Section: Modeling Of the Grid-connected Photovoltaic Systemmentioning

confidence: 99%

See 1 more Smart Citation

Metaheuristic-Based Control for Three-Phase Grid-Connected Solar Photovoltaic Systems

Badis

Boujmil

Mansouri

2022

International Journal of Energy Optimization and Engineering

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In this paper, a novel cascade control technique is proposed in order to identify the parameters of cascade controllers in a grid-connected photovoltaic (PV) system. Here, tuning of the inner and outer loop controllers is done simultaneously by means of an optimized genetic algorithm-based fractional order PID (GA-FOPID) control. Simulations are conducted using Matlab/Simulink software under different operating conditions, namely under fast-changing weather conditions, sudden parametric variations, and voltage dip, for the purpose of verifying the effectiveness of the proposed control strategy. By comparing the results with recently published optimization techniques such as particle swarm optimization (PSO) and ant colony optimization (ACO), the superiority and effectiveness of the proposed GA-FOPID control have been proven.

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Section: Modeling Of the Grid-connected Photovoltaic Systemmentioning

confidence: 99%

“…The generalized open-loop transfer function of the FOPID controller used in this research is given by equation ( 21) (Badis, Mansouri, & Boujmil, 2019):…”

Section: Fractional-order Pid Controllermentioning

confidence: 99%

Metaheuristic-Based Control for Three-Phase Grid-Connected Solar Photovoltaic Systems

Badis

Boujmil

Mansouri

2022

International Journal of Energy Optimization and Engineering

Self Cite

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“…It can be controlled by means of sliding-mode (SM) control, by using variable structure control system (VSCS). However, there are still a few issues in the converters, which have led to the drift to advanced control strategies like input output linearization [25]- [26], feedback linearization [27]- [28], which are non-linear and does not provide themselves to the application of linear control theory.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it adjusts the converter dc link voltage. In the literature, [25]- [26] the main focus on the cascade controller design of the converter. Here the non-linear system is converted to linearized using the small-signal model.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Non-linear controlled PV boost Converter

B.S.S¹,

M²,

Gottapu³

et al. 2022

YMER

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The development of power electronic converters has brought tremendous change in photovoltaic (PV) system. The input voltage of converter is flexible compared to input current but it is more influenced by the nonlinearity in the PV characteristics under different climatic conditions. In this paper the flexible input voltage is controlled by employing cascade control technique in the PV Stand-alone system. First, the input voltage across the capacitor and the current through inductor of the converter are controlled by retaining linear cascade controller, which is liberalized by the PV Characteristics obtained by maximum power point (MPP) by the state space modeling. Finally, the PV System has instability, when the converter is operating at constant current region (CCR) and this problem poses a challenge to control the design. So as to resolve this issue, a non-linear control with Feedback Linearization Control (FBLC) technique is applied to the converter system. The control laws are derived and implemented to the boost converter. The result reflects better performance in the proposed FBLC technique, which is not influenced by PV operating conditions.

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“…In reference [19], particle swarm optimization (PSO) is used to optimize the grid connection design, but the local optimization performance is poor. In reference [20], the cascade control strategy of a fractional-order PID photovoltaic grid-connected system is adopted, but its parameter tuning is difficult.…”

Section: Introductionmentioning

confidence: 99%

Research on Photovoltaic Grid‐Connected Control Strategy Based on Active Disturbance Rejection of Adaptive Extended State Observer

Liu

Xue

et al. 2021

Advances in Civil Engineering

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In the photovoltaic inverter grid-connected power generation system, the output power of photovoltaic panels is affected by illumination and temperature. The change of output power of photovoltaic panels will lead to the fluctuation of DC bus voltage. If the control is improper, it will directly affect the regular operation of the system. In order to improve the performance of the grid-connected inverter system, an active disturbance rejection control method based on adaptive extended state observer (ESO) is proposed. Firstly, a feedforward PI current inner loop controller is designed, which simplifies the structure of the control system and improves the tracking performance of the current. Then, the DC bus voltage outer loop ADRC is designed, and a conversion method that ignores the essential difference between nonlinear/time-varying and time-varying/linear is proposed. Through the conversion of time-invariant nonlinear system and time-varying linear system, the stability of the extended state observer is proved by the Routh criterion. Secondly, to solve the problem of mutual restriction between the stability and observation accuracy of the extended state observer, an adaptive function online automatic tuning ESO parameter method is proposed. Finally, the simulation results show that the proposed method has better dynamic and static performance, and the grid-connected voltage and current harmonics are small, which proves the correctness and effectiveness of the proposed method.

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Cascade Control of Grid-Connected PV Systems Using TLBO-Based Fractional-Order PID

Cited by 5 publications

References 27 publications

Metaheuristic-Based Control for Three-Phase Grid-Connected Solar Photovoltaic Systems

Metaheuristic-Based Control for Three-Phase Grid-Connected Solar Photovoltaic Systems

Stability Analysis of Non-linear controlled PV boost Converter

Research on Photovoltaic Grid‐Connected Control Strategy Based on Active Disturbance Rejection of Adaptive Extended State Observer

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