Voltage Balance Control Based Aalborg Inverter with Single Source in Photovoltaic System

Single-stage buck–boost inverters have attracted the attention of many researchers, due to their ability to increase/decrease the output voltage in one power conversion stage. One of the most important uses of these inverters is in photovoltaic applications, where the voltage of the solar panels varies in a wide range. In recent years, many new inverters have been proposed to improve the performance of existing structures. In this paper, the state of the art of these single-stage buck–boost inverters is discussed. The advantages and disadvantages of each structure are examined from different perspectives, such as the number of components, losses, and performance. Finally, in a general comparison, the properties of all structures are discussed and summarized in a table.

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“…The existence of two sources is the other disadvantage of this structure. Of course, in [48], the Aalborg inverter is provided…”

Section: Combination Of Different Types Of Dc-dc Convertersmentioning

confidence: 99%

“…The existence of two sources is the other disadvantage of this structure. Of course, in [48], the Aalborg inverter is provided with one source. In this work, two capacitors are added to the input side, and then a control method for voltage balancing is presented.…”

Section: Combination Of Different Types Of Dc-dc Convertersmentioning

confidence: 99%

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

2022

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“…In the case of high-frequency operations of the system network, the efficiency of the inverter drops down across all the stages [6]. Because of the increased population and everlasting demand for electric energy, Distributed PV Generation (DPVG) has emerged as a dramatic experience worldwide because of its environmental cleanliness and friendliness towards the system confinement [7]. The power grid system interconnected with power inverters for energy harvesting plays an economic role in harvesting electrical energy and plays a vital role in DPVG grid-connected systems [8].…”

Section: Introductionmentioning

confidence: 99%

Design of advanced Aalborg inverter for extracting maximum power from renewable energy sources tied with autonomous grid system

Selvaraj¹,

Kumar²,

Tamilarasan³

et al. 2023

IET Power Electronics

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Owing to increased energy demand, renewable energy sources have recently reached greater heights in the power industry. In this regard, integrating renewable energy with the power grid system has become essential in meeting consumer's energy demands. The novelty in this article is the design of an advanced Aalborg inverter with a reduced number of switches which results in enhanced system performance by reducing the switching losses. Integrating renewable energy sources with the power grid network has gained massive importance in supplying electric power to consumers. Integrating the power grid with renewable energy has become possible with the implementation of grid tie inverters. The only drawback in implementing renewable energy sources with the power grid is that the output of the resources varies from time to time in nature. Voltage Source Inverter‐based grid system requires two or three‐stage inverters for interfacing power units to transfer DC energy into the power grid network. To reduce the switching frequency across the system, many new excellent inverters have been designed to ensure the healthy operation of the system operating at a higher frequency. This article has been coined with the investigation of a novel buck and boosts converter‐based inverter operation named Aalborg inverter. The inverter operates at a higher frequency and minimum voltage drop across the inductor, where only one power stage has been implied to enhance the system's reliability and efficiency. This novel Aalborg inverter is applied and investigated for photovoltaic application.

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“…high efficiency and small size, transformerless inverters using MOSFET switches are regarded as one of the most promising topologies [7]- [9].…”

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confidence: 99%

A Modified Aalborg Inverter Extracting Maximum Power From One PV Array Source

Wang

Shuai

et al. 2019

CPSS TPEA

Self Cite

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Distributed Photovoltaic Generation (DPVG) systems have become more important in recent years because of energy pinch and air pollution. Grid-tied inverters, as the indispensable parts of the DPVG systems, have drawn a lot of research attentions. Among various constructors, the Aalborg inverter was proposed as a candidate for the interface between the PV arrays and the power grid for some potential advantages, such as the wide range of input DC voltages, high efficiency, low cost and no leakage current. For a conventional Aalborg inverter, however, in order to gain a symmetrical gird-injected current, when the input DC voltages generated by the PV arrays are not equal, part of the input DC energy has to be discarded, which will reduce the conversion efficiency of the whole system. In this paper, a modified Aalborg inverter with a single input DC source is proposed to extract the maximum DC energy of PV arrays. The operating principle is illustrated via equivalent circuits. The control strategy is designed to balance the capacitor voltages and smooth the gridinjected current. A 110 V/50 Hz/800 W prototype has been built to verify the validity of the proposed inverter together with the effectiveness of the control strategy. Index Terms-Aalborg inverter, Buck-Boost, maximum power piont tracking (MPPT), photovoltaic system, voltage balance. I. IntroductIonW ITH the development of global economy and the increase of population, environmental pollution and energy shortage are becoming increasingly serious. Distributed Photovoltaic Generation (DPVG), as one of the most important renewable energy resources, has experienced dramatic growth worldwide due to its environmental friendliness [1]-[3]. The grid-tied inverters, connecting the power grid with PV arrays, play an integral role in DPVG systems and have been investigated [4]-[6]. Owning to the advantages of low cost,

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Voltage Balance Control Based Aalborg Inverter with Single Source in Photovoltaic System

Cited by 7 publications

References 10 publications

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

Single-Stage Buck–Boost Inverters: A State-of-the-Art Survey

Design of advanced Aalborg inverter for extracting maximum power from renewable energy sources tied with autonomous grid system

A Modified Aalborg Inverter Extracting Maximum Power From One PV Array Source

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