A new maximum power point method based on a sliding mode approach for solar energy harvesting

Farhat, Maissa; Barambones, Óscar; Sbita, Lassaâd

doi:10.1016/j.apenergy.2016.03.055

Cited by 99 publications

(66 citation statements)

References 26 publications

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“…A case study was done and the OC shows significant potential in both energy and cost saving in comparison to the digital thermostat controller used in most of the HPWHs on the market. Farhat et al [35] presented a photovoltaic (PV) system with a maximum power point tracking (MPPT) facility to maximize power extraction from the photovoltaic generator. The experimental results demonstrated the validity of the proposed control scheme over a stand-alone real photovoltaic system.…”

Section: Renewable Energymentioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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Section: Renewable Energymentioning

confidence: 99%

Clean, efficient and affordable energy for a sustainable future

et al. 2017

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“…The SMC-MPPT algorithm is divided into two steps [7]. The first step is to estimate the actual reference voltage (VMPP) value at which the system will reach its maximum power point.…”

Section: Sliding Mode Controllermentioning

confidence: 99%

“…These two techniques are used to track the MPP in partial shadow condition and then a comparison is made between both the techniques. Sliding mode control [7][8][9], on the other hand is one of the most effective robust control techniques for non linear and discontinuous systems due to its simplicity, stability, higher flexibility in design procedure and great performance. Due its advantages SMC has found applications in various fields such as robotics, motor control [10] and converter output control [11][12].…”

Section: Introductionmentioning

confidence: 99%

Maximum Power Point Tracking for a Grid Connected Photovoltaic System using Sliding Mode Control

Sattianadan¹,

Kalyanasundaram²,

Vidyasagar³

et al. 2017

IJPEDS

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This paper presents a method to track the maximum power point for an isolated grid connected photovoltaic system. The method used to achieve this goal is sliding mode control. A high frequency flyback converter topology working in continuous conduction mode is used to boost the voltage and also provides galvanic isolation between input and output side. An inverter is used to invert the power for a grid connected operation. Therefore, the primary objective of this study is to design a sliding mode controller which can track maximum power driving a high frequency flyback converter and demonstrate its practicality as a highly efficient maximum power point tracker. This system is modelled and tested in MATLAB SIMULINK. To verify the results a practical implementation of sliding mode controller with high frequency flyback transformer is performed in a hardware setup. Keyword: Flyback converter INTRODUCTIONMost of the world's electricity demand is fulfilled by fossil fuels and nuclear plant and very small amount is met through renewable energy resources such as photovoltaic or solar energy. Due to increase in pollution from the conventional plants and depleting sources has led to increase use of photovoltaic energy as a source of electricity. But the success of a PV plant depends on weather conditions because the output of a solar cell depends on solar irradiation and temperature which are not constant and changes with time and season. There are various conventional methods to track maximum power point such as perturb and observe (P&O) and incremental conductance. The P&O algorithm is the simplest algorithm and is easy to implement among all the algorithms. It tracks the MPP by measuring the rate of change of power with respect to voltage at every point, being zero at the MPP, positive on the left of the MPP, and negative on the right. But it has various disadvantages, such as poor tracking, less efficient during changing weather conditions, inability to track MPP during low irradiance, oscillations around MPP and slow response [1]. Incremental conductance shows better performance than P&O algorithm and track MPP by comparing the incremental and instantaneous conductance with less oscillation around MPP and faster response [2]. Fuzzy logic does not require an accurate mathematical model and can work with inexplicit input. It can also handle non-linearity in a system. It mainly has four basic step fuzzyfication , rule base, inference engine and De-Fuzzyfication. The output of FLC is the reference voltage which is generated by the change in voltage and change in current at a sampling time K from the solar panel. The reference voltage in turn generates the error signal, based on which duty cycle is generated. The only disadvantage of the FLC is that it is very difficult to formulate the

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“…Many MPPT techniques have been proposed in the literature to push PV arrays to deliver the MPP under climatic condition changes [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Perturb and Observe (P&O) [7,8] and Incremental Conductance (INC) [9][10][11] are two well-known conventional MPPT techniques.…”

Section: Introductionmentioning

confidence: 99%

“…However, they are complex in design and rigorous to implement in practice. Therefore, several research works were interested in Voltage-Oriented MPPT (VO-MPPT) and Current-Oriented MPPT (CO-MPPT) [19][20][21][22][23][24]. These methods involve MPPT voltage-based algorithm (V-MPPT) in cascade with voltage control loop or MPPT current-based algorithm (C-MPPT) in cascade with current control loop.…”

Section: Introductionmentioning

confidence: 99%

A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory

et al. 2018

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This contribution considers an improved control scheme for three-phase two-stage grid-tied photovoltaic (PV) power systems based on integral sliding mode control (ISMC) theory. The proposed control scheme consists of maximum power point tracking (MPPT), DC-Link voltage regulation and grid current synchronization. A modified voltage-oriented maximum power point tracking (VO-MPPT) method based on ISMC theory is proposed for design of an enhanced MPPT under irradiation changes. Moreover, a novel DC-Link voltage controller based on ISMC theory is proposed to achieve good regulation of DC-Link voltage over its reference. To inject the generated PV power into the grid with high quality, a voltage-oriented control based on space vector modulation (SVM) and ISMC (VOC-ISMC-SVM) has been developed to control the grid current synchronization. Numerical simulations are performed in a MATLAB/Simulink TM (R2009b, MathWorks, Natick, MA, USA) environment to evaluate the proposed control strategy. In comparison with conventional control schemes, the developed control strategy provides an accurate maximum power point (MPP) tracking with less power oscillation as well as a fast and an accurate DC-Link regulation under varying irradiation conditions. Moreover, the transfer of the extracted power into the grid is achieved with high quality.

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A new maximum power point method based on a sliding mode approach for solar energy harvesting

Cited by 99 publications

References 26 publications

Clean, efficient and affordable energy for a sustainable future

Clean, efficient and affordable energy for a sustainable future

Maximum Power Point Tracking for a Grid Connected Photovoltaic System using Sliding Mode Control

A Robust Control of Two-Stage Grid-Tied PV Systems Employing Integral Sliding Mode Theory

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