Variable step size fractional incremental conductance for <scp>MPPT</scp> under changing atmospheric conditions

Khan, Fahad Usman; Gulzar, Muhammad Majid; Sibtain, Daud; Usman, Hafiz Muhammad; Hayat, Aamir

doi:10.1002/jnm.2765

Cited by 17 publications

(7 citation statements)

References 27 publications

(43 reference statements)

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“…An MPPT algorithm guarantees that the PV generates the maximum power possible when solar radiation is available. 24 The proposed controller directs the battery to either absorb surplus power produced by the PV panel or to deliver the required power to the load. The key advantages and contributions of this paper are • The advantage is that Lyapunov's method is a general method for stability analysis and can also be used for linear control design for nonlinear plants.…”

Section: Introductionmentioning

confidence: 99%

“…The BQZSDC is used to simultaneously manage the power of a PV source, battery, and load. An MPPT algorithm guarantees that the PV generates the maximum power possible when solar radiation is available 24 . The proposed controller directs the battery to either absorb surplus power produced by the PV panel or to deliver the required power to the load.…”

Section: Introductionmentioning

confidence: 99%

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Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

Battula

Garg

Lenka

et al. 2022

Circuit Theory & Apps

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This article proposes a bidirectional quasi-Z-source DC-DC converter (BQZSDC) to integrate distributed energy storage system with a stand-alone photovoltaic (PV)-connected system. The operational challenges like control and energy management of the renewable-driven stand-alone systems have been an interest of research. However, the challenge is managing the renewable energy source and the distributed energy storage system and simultaneously catering to the loads. This article analyzes the performance of a BQZSDC with a Lyapunov function-based controller for regulating DC link voltage (load voltage) and battery current. A duty-ratio feedforward control unit and a Lyapunov function-based feedback control unit are used to develop the controller. The duty-ratio feedforward control unit is used to reduce the burden on the feedback controller. The closed-loop system is exponentially stable with the feedback controller, offering excellent transient responsiveness even under large disturbances. Simulations in MATLAB/Simulink show that the controller functions satisfactorily in achieving regulation objectives. Finally, experimental results validate the performance of the proposed controller.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

Battula

Garg

Lenka

et al. 2022

Circuit Theory & Apps

View full text Add to dashboard Cite

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“…The most frequently used conventional power point tracking techniques are illustrated as Perturb and Observe (P&O), 9 Fractional Short Circuit (FSC) current, 10 Fractional Open Circuit (FOC) voltage, 11 and Incremental Conductance (IC) 12 . In P&O, the present PV power is compared successfully with the already existed power in order to extract the maximum output power of the solar PV.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to the P&O, in the IC technique, the instantaneous conductance is compared with the previously stored conductance. Based on the sign of comparative result, the conductance step size has been improved 12 . The design and implementation of FSC current and FOC voltage power point tracking methods are easy.…”

Section: Introductionmentioning

confidence: 99%

A new design of transformerless, non‐isolated, high step‐up DC‐DC converter with hybrid fuzzy logic MPPT controller

Basha¹,

Murali²

2021

Circuit Theory & Apps

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Under Partial Shading Conditions (PSCs), the solar PV nonlinear characteristics consist of multiple Maximum Power Points (MPPs). As a result, it is very difficult to extract the peak power of the solar PV. In this article, an Improved Grey Wolf Optimization‐based Fuzzy Logic Controller (IGWO‐FLC) is proposed to track the MPP of the solar PV. The advantages of the proposed hybrid soft computing Maximum Power Point Tracking (MPPT) controller are high accuracy, very less oscillations across MPP, and high tracking speed. Also, a new transformerless, high step‐up, Non‐isolated Boost Converter (NIBC) is introduced in this work to improve the voltage profile of the solar PV system at different atmospheric conditions. The introduced converter circuit makes use of the network LC3D3 to improve the voltage conversion ratio, reduced voltage stress on switches, and universal input voltage. In addition, the network LC3D3 acts as a filter to reduce the output power ripples of the converter. The steady‐state performance of the proposed converter is analyzed at Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) of operations. The MATLAB/Simulink window is used to validate the proposed PV fed NIBC system at uniform and different PSCs of the solar PV. Also, the NIBC performance is investigated by applying an M62252P8020 type programmable DC‐source.

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“…Various studies on this area has shown the chance of increasing PV systems with wind turbines with minimal adjustments. To consolidate the wind turbine and the PV in a hybrid system, [4] have utilized a converter of a three-phase square waveform. To work more on the DC loads of hybrid system, another three-input dc-dc boost converter is being presented in [40].…”

mentioning

confidence: 99%

An Innovative Converterless Solar PV Control Strategy for a Grid Connected Hybrid PV/Wind/Fuel-Cell System Coupled With Battery Energy Storage

et al. 2023

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The proposed work addresses the modeling, control, energy management and operation of hybrid grid connected system with wind-PV-Battery Energy Storage System (BESS) integrated with Fuel Cell (FC) and Electrolyzer. A hybrid PV-Wind-FC with electrolyzer consisting of BESS with the least number of control loops and converters has been proposed. The proposed hybrid system presents a cost efficient solution for integrating PV into a hybrid system by eliminating the PV converter. This includes the design of controllers for grid-connected hybrid systems with a renewable distributed generator (Wind and PV) as a primary source, BESS as a secondary source and FC with Electrolyzer as a tertiary source. In addition, the lead compensator along with integrator is used for obtaining enough phase margin and removing steady state error completely. It increases the stability of the controller and adds phase shift φ s at a cross gain frequency (ω cut ). The Grid Side Controller (GSC) is capable of providing frequency support to the utility grid, when it is linked to the grid. In the proposed configuration, PV power is maximized and injected into grid through GSC. Rotor Side Converter (RSC) and GSC ensure the support for sharing the burden of the grid station. Moreover, the proposed controller of BESS with coordination of FC eliminates the effect of intermittency of power generated from wind and PV. Excess power production by renewable distribution generation is used by Electrolyzer to generate hydrogen. This hydrogen is further used by FC when there is not enough power generation due to unfavorable weather conditions. The energy management has been presented to fulfill the load profile, avoid BESS overcharging and to minimize the intermittency and fluctuation of Wind and PV sources. This method guarantees steady power flow and service continuity. The Simulink model of the proposed system results validate the efficiency of the proposed hybrid system as compared to the conventional hybrid system reported in the literature. The modeling of the proposed system and analysis has been demonstrated using the MATLAB Simulink model. Lastly, the energy management of the system has also been examined and compared with the conventional power system.INDEX TERMS Grid-connected system, Energy management system, Battery energy storage system, Electrolyzer, Fuel Cell, Doubly fed induction motor, Maximum power point tracking I. INTRODUCTIONAn increase in number of home appliances to do simple tasks of the household has made life very relaxed and effortless.Whereas with the inclusion of each electric appliance at home the electric demand is growing. Power generation is continuously increasing to fulfill the electric power demand.

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Variable step size fractional incremental conductance for MPPT under changing atmospheric conditions

Cited by 17 publications

References 27 publications

Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

A new design of transformerless, non‐isolated, high step‐up DC‐DC converter with hybrid fuzzy logic MPPT controller

An Innovative Converterless Solar PV Control Strategy for a Grid Connected Hybrid PV/Wind/Fuel-Cell System Coupled With Battery Energy Storage

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