Integration of renewable distributed generators into the distribution system: a review

Adefarati, T.; Bansal, R.C.

doi:10.1049/iet-rpg.2015.0378

Cited by 492 publications

(216 citation statements)

References 100 publications

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“…Therefore, it is difficult to operate a stand-alone power system supplied from only one type of renewable energy source unless appropriate energy storage facilities. If enough energy storage capacity is not available, especially in medium to large-scale systems, a grid-connected renewable power generation may be the only practical solution [3].…”

Section: Introductionmentioning

confidence: 99%

Multilevel Inverter Topology for Renewable Energy Grid Integration

Amamra

Meghriche

Cherifi

et al. 2017

IEEE Trans. Ind. Electron.

137

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Abstract-In this paper, a novel three-phase parallel grid connected multilevel inverter (MLI) topology with a novel switching strategy are proposed. This Inverter is intended to feed a microgrid from renewable energy sources (RES) to overcome the problem of the polluted sinusoidal output in classical inverters and to reduce component count, particularly for generating a multilevel waveform with a large number of levels. The proposed power converter consists of n two-level (n + 1) phase inverters connected in parallel, where n is the number of RES. The more the number RES, the more the number of voltage levels, the more faithful is the output sinusoidal wave form. In the proposed topology, both voltage pulse width and height are modulated and pre-calculated by using a pulse width and height modulation (PWHM) so as to reduce the number of switching states (i.e. switching losses) and the total harmonic distortion (THD). The topology is investigated through simulations and validated experimentally with a laboratory prototype. Compliance with the IEEE 519-1992 and IEC 61000-3-12 standards is presented and an exhaustive comparison of the proposed topology is made against the classical cascaded H-bridge topology.

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Section: Introductionmentioning

confidence: 99%

Multilevel Inverter Topology for Renewable Energy Grid Integration

Amamra

Meghriche

Cherifi

et al. 2017

IEEE Trans. Ind. Electron.

137

View full text Add to dashboard Cite

show abstract

“…1,2 Typical energy power system is shown in Figure 1, where the main unidirectional power sources can be derived from a photovoltaic (PV), dc wind, and fuel cells (FC) systems. 1,3,4 In this system, there is a storage element of energy composed of an optional backup battery unit, the dc-dc step-up unidirectional interest stage and a bidirectional dc-ac stage which may be connected to the utility grid or feed alternating current loads. Energy storage systems with batteries have been used and incorporated into the electrical system to supply the energy demands in order to compensate the dynamic characteristics of the sources and fluctuations in energy production, providing an energy reserve when the other sources are not at full capacity.…”

Section: Figurementioning

confidence: 99%

Three‐phase step‐up/step‐down isolated dc‐dc converter with wide‐range duty cycle for low dc renewable energy sources applications

Mayer

Kattel

Oliveira

2018

Circuit Theory & Apps

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Summary Renewable sources of low voltage are an important resource in power generation systems. Many provide high output current at low voltage, as the photovoltaic modules and fuel cells systems, therefore, become more popular considering the safety requirements. In this paper, a novel current‐fed three‐phase dc‐dc converter with high‐frequency isolation transformer is proposed. This one has the main features as high dc voltage gain, reduced switches count, minimize the volume of the output/input filters, the frequency ripple of the input current and output voltage are three times higher than the switching frequency, best losses distribution and reduced stresses in the circuit. Moreover, it operates with wide‐range duty cycle, the soft‐start can be used, which allows the input current and the output voltage to be started gradually. Operating with a duty cycle of 1/3 and 2/3, the input current ripple is canceled. The proposed converter is studied qualitatively and quantitatively, being presented the operation principle in continuous and discontinuous conduction mode, dc voltage gain in each operation mode, and the voltage and current stresses for the power components sizing. To validate the operation of the proposed converter, the laboratory design example and experimental results are presented to demonstrate the performance and validate the claims of the converter for wide load variation. Experimental results are presented for a 4‐kW prototype, operating in R2 region for continuous conduction mode. Additionally, experimental results in R1 and R3 regions are obtained.

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“…In the deregulated electricity market a huge quantity of small renewable power sources, mainly photovoltaic and wind systems, but also conventional cogeneration, microturbines and advanced storage systems such as fuel cells, are being connected to the main grid [1]. The conventional architecture of an inverter-based distributed generation network is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Experimental Laboratory for Distributed Generation Networks Based on Power Inverters

et al. 2017

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Abstract:In the recently deregulated electricity market, distributed generation based on renewable sources is becoming more and more relevant. In this area, two main distributed scenarios are focusing the attention of recent research: grid-connected mode, where the generation sources are connected to a grid mainly supplied by big power plants, and islanded mode, where the distributed sources, energy storage devices, and loads compose an autonomous entity that in its general form can be named a microgrid. To conduct a successful research in these two scenarios, it is essential to have a flexible experimental setup. This work deals with the description of a real laboratory setup composed of four nodes that can emulate both scenarios of a distributed generation network. A comprehensive description of the hardware and software setup will be done, focusing especially in the dual-core DSP used for control purposes, which is next to the industry standards and able to emulate real complexities. A complete experimental section will show the main features of the system.

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Integration of renewable distributed generators into the distribution system: a review

Cited by 492 publications

References 100 publications

Multilevel Inverter Topology for Renewable Energy Grid Integration

Multilevel Inverter Topology for Renewable Energy Grid Integration

Three‐phase step‐up/step‐down isolated dc‐dc converter with wide‐range duty cycle for low dc renewable energy sources applications

A Flexible Experimental Laboratory for Distributed Generation Networks Based on Power Inverters

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