Optimal fractional-order PI with DC-DC converter and PV system

Mohamed, Ahmed T.; Mahmoud, Mahmoud F.; Swief, R.A.; Said, Lobna A.; Radwan, Ahmed G.

doi:10.1016/j.asej.2021.01.005

Cited by 23 publications

(3 citation statements)

References 49 publications

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“…is the state of a switch, & inverse logic of u. The value of the capacitor (C) and inductor (L) are calculated as follows is shown in equation (7) and equation (8).…”

Section: Dc-dc Boost Converter Designmentioning

confidence: 99%

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Optimal control for a photovoltaic integrated grid system using PSO and modified whale optimization to enhance power quality

Tiwari

Agarwal

2023

Eng. Res. Express

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The paper proposes a modified & optimized controller for PV-integrated grid-connected PV systems. As the solar power output depends on the environmental conditions, i.e., irradiation and atmospheric temperature, the maximum power from the photovoltaic (PV) module is extracted using perturb and observe (P & O) algorithm. With a variety of controllers, such as conventional proportional and integral (PI) controllers, particle swarm optimization (PSO), and the modified Whale optimization algorithm (MWOA) method based on optimum control, the power as compared to extracted from PV panels using MWOA-based controllers. A complete simulation and implementation of a single-phase grid-connected inverter are shown to verify the proposed PV controller. The power flow control and grid synchronization are also presented when the above controllers act as MPPT controllers in the proposed system. The performance of proposed system is evaluated and compared among conventional and optimal controllers under a MATLAB-Simulink environment.

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“…is the state of a switch, & inverse logic of u. The value of the capacitor (C) and inductor (L) are calculated as follows is shown in equation (7) and equation (8).…”

Section: Dc-dc Boost Converter Designmentioning

confidence: 99%

“…Optimization methods include particle swarm optimization (PSO), the whale optimization algorithm (WOA), Jaya, etc. Recently, WOA is the latest optimization technique, and it shows good results in several applications [8,9]. Grid-connected photovoltaic systems are widely used because of the reliability and abundance of solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Optimal control for a photovoltaic integrated grid system using PSO and modified whale optimization to enhance power quality

Tiwari

Agarwal

2023

Eng. Res. Express

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“…Some recent results summarizing the use of fractional calculus in converters control are as follows: Robust-optimal controllers to improve output error-tracking were suggested in [21,22]. Optimized fractional-order PI controllers to eliminate oscillations, steady-state variations, and overshoots were used.…”

mentioning

confidence: 99%

Non-Integer Order Approximation of a PID-Type Controller for Boost Converters

et al. 2021

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In this work, the voltage regulation of a boost converter is addressed. A non-integer order PID controller is proposed to deal with the closed-loop instability of the system. The average linear model of the converter is obtained through small-signal approximation. The resulting average linear model is considered divided into minimum and normalized non-minimum phase parts. This approach allows us to design a controller for the minimum phase part of the system, excluding temporarily the non-minimum phase one. A fractional-order PID controller approximation is suggested for the minimum phase part of the system. The proposal for the realization of the electrical controller is described and its implementation is used to corroborate its effectiveness when regulating the output voltage in the boost converter. The fractional-order PID approximation achieves regulation of the output voltage in the boost converter by exhibiting the iso-damping property and using a single control loop, which confirmed its effectiveness in terms of controlling non-minimum phase/variable parameter systems.

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