An Extended Quasi-switched Z-Source Inverter

Sabahi, Mehran; Babaei, Ebrahim; Ahmadzadeh, Taher; Kolahian, Pouya; Tarzamni, Hadi

doi:10.1109/pedstc.2019.8697778

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…From Figure 34(c) and (d), it can be observed that the gain has further been extended in [119] and [121] by adding an additional

L C

pair in the network and termed as extended active‐switched qSBI (EAS‐qSBI) and extended boosting switched‐capacitor embedded qSBI (ESCE‐qSBI), respectively. In [122–124], a continuous current mode SBI network was studied, and later, the topology in [125] used an SL cell inside the impedance network in order to maximize the inverter gain. Figure 35(a) shows the modified SBI (M‐SBI) while Figure 35(b) and (c) shows the SL‐modified qSBI (SLM‐qSBI) and hybrid switched‐inductor‐capacitor modified qSBI (HSLCM‐qZSI), respectively.…”

Section: Topology Improvements Of Switched Boost Zsimentioning

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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“…From Figure 34(c) and (d), it can be observed that the gain has further been extended in [119] and [121] by adding an additional

L C

Section: Topology Improvements Of Switched Boost Zsimentioning

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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“…As photovoltaic (PV) energy usage spread along with other renewable energy resources, their power conditioning systems get great importance [1][2][3]. To reach the desired operation, characteristics and output waveforms of these systems, three main configurations are commonly considered for PV power conditioning systems, as the central, string and modular [4,5]. In the central configuration, series and parallel connections of several PV modules feed a large central inverter, where the maximum power point tracking (MPPT) of individual PV modules is missed, and the reliability of the system is low.…”

Section: Introductionmentioning

confidence: 99%

Multi‐input high step‐up inverter with soft‐switching capability, applicable in photovoltaic systems

Babaei

Tarzamni

Tahami

et al. 2020

IET Power Electronics

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In this study, a new multi-input high step-up inverter, based on isolated soft-switching DC-DC converter blocks is proposed. Each of these blocks can provide zero-voltage and zero-current switching for its semiconductors, which improve power efficiency. The interesting feature of this DC-DC converter is using bidirectional switches to generate both positive and negative output voltage levels in each DC-DC block with an appropriate control scheme. Each DC-DC converter operates by simple pulse width modulation control through fixed frequency and has two degrees of freedom, which provide the capability of output voltage regulation or maximum power point tracking. The proposed inverter consists of the cascaded connection of these DC-DC converters at their output terminal. This inverter can operate with high voltage gain, where the output voltage of each DC-DC converter is regulated. Furthermore, it can generate more output voltage levels with less number of DC-DC blocks. All these advantages make the proposed inverter suitable for photovoltaic power conditioning systems. In this study, the theoretical analysis with steady-state waveforms, design constraints, resonant tank analysis and comparison study are given. Then, experimental results of both the proposed inverter and its DC-DC blocks are presented.

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An Extended Quasi-switched Z-Source Inverter

Cited by 2 publications

References 16 publications

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

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

Multi‐input high step‐up inverter with soft‐switching capability, applicable in photovoltaic systems

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