Performance Analysis of DC-DC Buck Converter for Renewable Energy Application

Baharudin, N. H.; Mansur, T. M. N. T.; Ali, Ramzy S.; Misrun, Muhammad Irwanto

doi:10.1088/1742-6596/1019/1/012020

Cited by 26 publications

(13 citation statements)

References 4 publications

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“…ese commands are generally named "Maximum Power Point Tracking" (MPPT). ese techniques essentially consist in bringing each time the operating point of the photovoltaic generator to the MPP, whatever the sudden variations are in the load or the weather conditions [44][45][46][47][48].…”

Section: Solar Pv System Configurationmentioning

confidence: 99%

Real Optimisation of a PV System Based on Hysteresis Controllers over Sun: Design, Implementation, and Comparative Study

Brahmi

Gammoudi

Dhifaoui

2021

Journal of Engineering

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This paper presents two strategies for controlling photovoltaic power based on hysteresis controllers. These regulators adjust the photovoltaic current and voltage in order to supply the load with maximum power. The regulators are designed, produced, and tested within the ERCO-INSAT research unit. The proposed structures are experienced, and the results prove the robustness of the controls and confirm their abilities to maintain op timal power in real time. We also presented the mathematical model of the photovoltaic system, a dynamic model taking into account the variation of the climatic parameters as well as the internal parameters of the models such as the series and shunt resistances. Simulation results are validated by an experimental test that confirms the effectiveness of the current and voltage controllers carried out. This simulation is already based on the use of real solar radiation and temperature scenarios recorded by a digital oscilloscope via the intermediary of the sensors. The two techniques are ensured by the use of the Dspace card to control the DC/DC converter and to implement the chosen controls.

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Section: Solar Pv System Configurationmentioning

confidence: 99%

Real Optimisation of a PV System Based on Hysteresis Controllers over Sun: Design, Implementation, and Comparative Study

Brahmi

Gammoudi

Dhifaoui

2021

Journal of Engineering

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“…High losses in the IGBT switches remains the major limitation of the high frequencies, which reduces efficiency. Significant information and in-depth investigations in the same framework can be found in these studies [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 97%

Robust Adaptive Feedforward Sliding Mode Current Controller for Fast-Scale Dynamics of Switching Multicellular Power Converter

Hamdi¹,

Hamida²,

Bennis³

et al. 2021

Adv. sci. technol. eng. syst. j.

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Higher efficiency and lower losses are widely considered as the best metrics to optimize, in a high-power converter performance context. To provide a solution to the ever-increase of high switching frequencies challenges, we must explore soft-switching technologies to resolve interface issues and reduce the switching losses. This manuscript describes a comparative analysis between the fixed-bandwidth (FBW) and the variable-bandwidth (VBW) of the hysteresis modulation (HM) based on the conventional sliding mode (CSM) strategy. The two adopted techniques are applied to a bidirectional multichannel DC-DC asynchronous Buck converter. The cells are parallel-connected and operating in continuous conduction mode (CCM). The objective is to have a system that is more stable, more efficient and able to cope with variations in input voltage, load and desired output voltage. That requires, first, to attenuate the non-linearity phenomenon of the conventional sliding mode by placing a hysteresis modulation. Then, after applying this technique, we confronted the dilemma of the variable switching frequency. Our hypothesis was to incorporate a variable bandwidth of the hysteresis modulation. The results obtained under parametric variation clearly show the areas where significant differences have been found between the two approaches. Likewise, they both share several key features. Simulation studies in the MATLAB ® / Simulink ™ environment are performed to analyze system performance and assess its robustness and stability.

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“…Direct methods are methods that use the voltage and current measurements of the panels and whose algorithm is based on the variation of these measurements. The advantage of these algorithms is that they do not require prior knowledge of the characteristics of PV panels, (Baharudin et al, 2018; Sellami et al, 2018). There is also the family of variable structure methods.…”

Section: Introductionmentioning

confidence: 99%

Extremum seeking control of PV system based on least- squares approach (real-time optimization)

Gammoudi

Brahmi

Dhifaoui

2022

Energy Exploration & Exploitation

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Today renewable energy has become an absolute necessity taking into account the price of fossil energies and the pollution resulting from her large exploitation. Solar radiation can be converted directly into electrical energy, in the form of direct current, by means of a solar cell. Finding the maximum power point is an essential part in photovoltaic systems. Indeed, the output power varies greatly depending on illumination, temperature, but also the overall aging of the system. In order to operate a PV generator as often as possible at its optimum power, we must introduce a controller and a static converter which will act as an adapter between the source and the load. Many works review the different maximum power methods to adjust the optimal output power and improve the efficiency of the PV system. These methods are broadly classified into several categories. In this paper, such an experimental regulator based on a power mathematical technique is proposed, which is founded on least squares method to estimate the maximum power when operating sub-optimally. This technique makes it possible to compare experimental data, generally tainted with measurement errors, with a mathematical model supposed to write these data. This study gives the opportunity to experimentally test a mathematical method with a PV system which mainly uses a BOOST chopper. The DC / DC converter and the regulator are designed and produced within the research unit while using an STM32F4 microcontroller over sun. The results obtained from the use of this optimization technique clearly show the very high fidelity between the real values of the current and voltage and their optimal estimated values with a certain uncertainty which does not exceed almost 2%, which shows a good agreement. In the same way, this approach makes it possible to minimize the oscillations around the MPP, which already makes it possible to improve the efficiency of the system which is very close to 100% in experimental tests.

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Performance Analysis of DC-DC Buck Converter for Renewable Energy Application

Cited by 26 publications

References 4 publications

Real Optimisation of a PV System Based on Hysteresis Controllers over Sun: Design, Implementation, and Comparative Study

Real Optimisation of a PV System Based on Hysteresis Controllers over Sun: Design, Implementation, and Comparative Study

Robust Adaptive Feedforward Sliding Mode Current Controller for Fast-Scale Dynamics of Switching Multicellular Power Converter

Extremum seeking control of PV system based on least- squares approach (real-time optimization)

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