Switched Z‐source networks: a review

Nozadian, Mohsen Hasan Babayi; Babaei, Ebrahim; Hosseini, Seyed Hossein

doi:10.1049/iet-pel.2018.5436

Cited by 39 publications

(29 citation statements)

References 87 publications

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“…Though [43] and proposed papers cover SBI topologies, the proposed paper comprehensively considers all state-of-theart topologies as compared to [43].…”

Section: Figurementioning

confidence: 99%

Z‐source inverter topologies with switched Z‐impedance networks: A review

Subhani

Kannan

Mahmud

et al. 2021

IET Power Electronics

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The Z‐source inverter is one of the most interesting power electronic converters. Over the past decades, research and development have been in high demand to meet the challenges for improving the converter performance with reduced weight and cost while having high efficiency along with high gain or boost factor. Since the inception, tons of resolutions, customizations, and improvements have appeared to achieve these performance goals. To overcome the most common drawback, i.e. the low boost factor of classical Z‐source inverters, the switched inductor/capacitor and switched boost Z‐source inverter topologies have become predominant in the recent epoch. Furthermore, the higher component voltage stress, discontinuous input current, and high inrush start‐up current issues have also been addressed and solved in various literature as part of this topical advancement. In this study, a comprehensive review of various switched impedance network‐based Z‐source inverter topologies has been accomplished for providing a quick report to researchers and engineers so that they can consider this as a one‐stop solution for selecting inverters from this group. The overall study covers the methodology, features, and relevant important results of the latest switched Z‐source inverter models in order to demonstrate the coordination between pitfalls and improvements.

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“…Though [43] and proposed papers cover SBI topologies, the proposed paper comprehensively considers all state-of-theart topologies as compared to [43].…”

Section: Figurementioning

confidence: 99%

Z‐source inverter topologies with switched Z‐impedance networks: A review

Subhani

Kannan

Mahmud

et al. 2021

IET Power Electronics

View full text Add to dashboard Cite

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“…However, they suffered from an important drawback, i.e. the discontinuous input current making them unsuitable for the renewable energy applications [8, 9]. The capacitor voltage stresses are also high resulting in usage of high‐power rated capacitors which increases the size of the converter.…”

Section: Introductionmentioning

confidence: 99%

Switched capacitor‐based continuous input current high step‐up impedance source DC–DC converter

Ahmad

Shiluveru

Singh

2020

IET power electron.

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The conventional converter needs to be operated at a high duty cycle to achieve maximum possible voltage gain. This leads to severe reverse recovery of switches, increases losses, and reduces efficiency. This study presents a modified switched‐capacitor‐based high gain continuous input current quasi‐Z‐source converter (qZSC) for DC microgrid applications. The proposed converter utilises the embedded switched‐capacitor techniques and can give a high voltage gain with a low duty ratio compared to the conventional converters. The proposed converter also experiences less capacitor voltage and inductor current stresses compared to the conventional Z‐source converters. This facilitates the use of lower‐rated capacitors and inductors for higher power applications. Detailed steady‐state, small‐signal, and power loss analysis of proposed qZSC is discussed in this study. A prototype of 100 W is designed and implemented using TI TMS320F28335 Experimenter Kit to verify the operation of the proposed converter.

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“…In recent years, many impedance networks are proposed as an attractive solution for high voltage boosting purposes using various techniques such as diode/capacitor assisted [1], switched boost networks [2][3][4], switched-capacitors (SCs) [5,6], switched-inductors (SLs) [7,8], and voltage lift [9]. The impedance source (or Z-source) networks are recently proposed for various applications such as uninterruptible power supplies (UPSs) [10,11], adjustable speed drives [12], renewable energy systems [13][14][15][16], and electric vehicles [17,18].…”

Section: Introductionmentioning

confidence: 99%

A family of high voltage gain quasi‐Δ‐source impedance networks

Rezazadeh

Monfared

Nikbahar

et al. 2020

IET Power Electronics

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This paper proposes a class of impedance networks, called quasi-Δ-source, as an improvement to the successful Δ-source one. Compared to their origin, the three proposed networks offer higher voltage gains with a better magnetic circuit utilization and a smooth continuous input current. A lower magnetizing and total inductance required for the Δ-shaped coupled inductors of the proposed networks allows smaller and cheaper magnetic cores utilization. Also, a lower total power loss of the magnetically coupled elements is another interesting advantage of the proposed networks. Moreover, the total required capacitance of the proposed networks is the same and even slightly lower than that of the conventional Δ-source one. All these improve the performance of the proposed class of networks with the smaller size of components compared to their conventional competitor. The principles of operation are developed and the theoretical analysis is performed. Also, by using the circuit averaging technique, the small-signal models of the Δ-source and the proposed networks are derived as well as their control-to-output transfer function is achieved. Finally, the experiments on a 300 W rated power prototype of the proposed networks successfully confirm the theoretical achievements. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Switched Z‐source networks: a review

Cited by 39 publications

References 87 publications

Z‐source inverter topologies with switched Z‐impedance networks: A review

Z‐source inverter topologies with switched Z‐impedance networks: A review

Switched capacitor‐based continuous input current high step‐up impedance source DC–DC converter

A family of high voltage gain quasi‐Δ‐source impedance networks

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