Robust single‐phase inverter based on the buck–boost converter through an efficient hybrid control

Yalçın, Faruk; Arifoğlu, Uğur; Yazıcı, İrfan; Erin, Kenan

doi:10.1049/iet-pel.2019.0913

Cited by 9 publications

(8 citation statements)

References 36 publications

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“…Recent research focuses on designing a single-stage buck-boost inverter topology [84][85][86], basically to reduce the number of components such as switches; also, the two-stage power conversion results in the complex circuit structure and control algorithm [87]. Generally, single-stage buck-boost inverters consist of distinct circuits operating individually in buck/boost or positive/negative modes, the latter leading to crossover distortion in the output current [88].…”

Section: Single-stage Buck-boost Invertersmentioning

confidence: 99%

Leakage Current Reduction in Single-Phase Grid-Connected Inverters—A Review

et al. 2020

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The rise in renewable energy has increased the use of DC/AC converters, which transform the direct current to alternating current. These devices, generally called inverters, are mainly used as an interface between clean energy and the grid. It is estimated that 21% of the global electricity generation capacity from renewable sources is supplied by photovoltaic systems. In these systems, a transformer to ensure grid isolation is used. Nevertheless, the transformer makes the system expensive, heavy, bulky and reduces its efficiency. Therefore, transformerless schemes are used to eliminate the mentioned disadvantages. One of the main drawbacks of transformerless topologies is the presence of a leakage current between the physical earth of the grid and the parasitic capacitances of the photovoltaic module terminals. The leakage current depends on the value of the parasitic capacitances of the panel and the common-mode voltage. At the same time, the common-mode voltage depends on the modulation strategy used. Therefore, by the manipulation of the modulation technique, is accomplished a decrease in the leakage current. However, the connection standards for photovoltaic inverters establish a maximum total harmonic distortion of 5%. In this paper an analysis of the common-mode voltage and its influence on the value of the leakage current is described. The main topologies and strategies used to reduce the leakage current in transformerless schemes are summarized, highlighting advantages and disadvantages and establishing points of comparison with similar topologies. A comparative table with the most important aspects of each converter is shown based on number of components, modes of operation, type of modulation strategy used, and the leakage current value obtained. It is important to mention that analyzed topologies present a variation of the leakage current between 0 to 180 mA. Finally, the trends, problems, and researches on transformerless grid-connected PV systems are discussed.

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Section: Single-stage Buck-boost Invertersmentioning

confidence: 99%

Leakage Current Reduction in Single-Phase Grid-Connected Inverters—A Review

et al. 2020

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“…So they are used in a wide range of industrial applications to supply AC loads (Rashid, 2014). As the AC loads and the AC systems are designed to be supplied by pure sine wave voltages, the inverter’s ability to produce a high-quality alternative voltage as close as possible to an ideal sine wave with low total harmonic distortion (THD) value less than 5% is important (Yalcin et al , 2020b). For this aim, the researchers have been studying developing inverter topologies and control techniques while considering the aim of minimizing the complexity, physical size and cost (Hossam-Eldin et al , 2020).…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a single-phase buck-type inverter via an efficient hybrid control technique

Yalçın

Arifoğlu

Yazıcı

2022

Self Cite

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Purpose This paper aims to present the design and implementation of a new general-purpose single-phase buck-type inverter. Design/methodology/approach The operation of the proposed inverter is based on the general-purpose buck converter. The proposed buck-type inverter topology is designed with reduced numbers of passive and active elements to minimize design cost and complexity. Also, an efficient hybrid control technique based on the proportional‐integral‐derivative (PID) supported by open-loop control signal is offered for the control of the proposed inverter. The proposed hybrid control method improves the performance of the PID controller during the change of inverter operation parameters. A close to single-phase sine wave output voltage with low total harmonic distortion (THD) can be produced by the proposed inverter in a wide range of voltage and frequency lower than the inverter input voltage value. Findings Simulation and experimental test studies are applied to the proposed inverter. The experimental laboratory setup is built for 0–50 Hz, 0–100 Vp, 0.5 kW. Both the simulation and the experimental test results show that the single-phase inverter can produce close to sine wave output voltage with THD level under 5% in a wide range of frequency for various operating conditions and for different loads. Originality/value In this paper, a new topology and a new hybrid control technique that are patented by the corresponding author are implemented for a single-phase buck-type inverter through a scientific project. The operating results of the study reveal the efficient operating capability with a simple topology structure.

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“…In fact, the Buck-Boost is a switched model, and control of the nonlinear switched systems is a challenging topic [12]. As a result, there are also many other reports about the chaos control of the Buck-Boost converters [13][14][15]. For instance, Sriramalakshmi et al [15] analyzed the nonlinear phenomena and control of the current mode-controlled Buck-Boost converter.…”

Section: Introductionmentioning

confidence: 99%

Complex Dynamics and Hard Limiter Control of a Fractional-Order Buck-Boost System

Wang

2021

Mathematical Problems in Engineering

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Chaos and control analysis for the fractional-order nonlinear circuits is a recent hot topic. In this study, a fractional-order model is deduced from a Buck-Boost converter, and its discrete solution is obtained based on the Adomian decomposition method (ADM). Chaotic dynamic characteristics of the fractional-order system are investigated by the bifurcation diagram, 0-1 test, spectral entropy (SE) algorithm, and NIST test. Meanwhile, the control of the fractional-order Buck-Boost model is discussed through two different ways, namely, the intensity feedback and the hard limiter control. Specifically, the hard limiter control can be realized using a current limiter in the circuit, where the current limiter device is applied to control the branch current. The results show that the proposed fractional-order system has complex dynamic behaviors and potential application values in the engineering field.

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Robust single‐phase inverter based on the buck–boost converter through an efficient hybrid control

Cited by 9 publications

References 36 publications

Leakage Current Reduction in Single-Phase Grid-Connected Inverters—A Review

Leakage Current Reduction in Single-Phase Grid-Connected Inverters—A Review

Design and implementation of a single-phase buck-type inverter via an efficient hybrid control technique

Complex Dynamics and Hard Limiter Control of a Fractional-Order Buck-Boost System

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