A Novel Three-Switch Z-Source SEPIC Inverter

Wang, Baocheng; Tang, Wei

doi:10.3390/electronics8020247

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…In Reference [3], a three-phase cascaded active ISI is proposed to reduce the number of passive elements. A common ground Z-source SEPIC inverter is proposed in [4] to eliminate leakage current. In order to increase the voltage gain, a multiplier cell technique is applied to the quasi-switched boost inverter with low input current ripple [5].…”

Section: The Current Research Trendsmentioning

confidence: 99%

Power Converters in Power Electronics: Current Research Trends

Nguyen

2020

Electronics

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Section: The Current Research Trendsmentioning

confidence: 99%

Power Converters in Power Electronics: Current Research Trends

Nguyen

2020

Electronics

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“…Combining the conventional converters with the switched-network cells which are composed of inductors and diodes, several kinds of modified converters are presented in [8] and [12]. In [13], [14], hybrid switched-network cell is embedded in the conventional Sepic and Cuk for constructing new converters. However, the aforementioned combined converters have complex structures and the increases of their conversion ratios are not obvious.…”

Section: Introductionmentioning

confidence: 99%

A Family of Inverting Buck-Boost Converters With Extended Conversion Ratios

Miao

Gao

2019

IEEE Access

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In this paper, two inverting buck-boost converters which possess wide conversion ratios are proposed. At the proper duty cycles, the inverting buck 2 -boost converter (IB2BC) achieves high step-down gain while the inverting buck-boost 2 converter (IBB2C) realizes high step-up gain. Advantages of the IB2BC and the IBB2C also include fourth-order simple common-ground structures to increase the power density and operability, low components stress to decrease the corresponding losses and then to improve the system efficiency, no sudden changings on capacitors voltage to prevent the instantaneous overcurrent phenomenon. Owing to the special structures of the IB2BC and the IBB2C, their improved single-switch topologies with reduced number of switch and extensional topologies with wider conversion ratios are constructed, respectively. Operational principles and corresponding comparisons of the above mentioned buck-boost converters are deeply studied and analyzed. As the representative, the single-switch inverting buck-boost 2 converter (SIBB2C) is designed and experimented in step-down/up modes for verifying the family of buck-boost converters performance.INDEX TERMS Buck-boost converters, inverting output voltage, single-switch converters, extended topologies, wide conversion ratio.

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“…The operation principle of the ZSI and current-fed topologies mentioned consist in apply a shoot-through state to overlap the H-bridge branches (0V) which provides natural protection against short-circuits, making it suitable for large-scale applications. After its presentation, variations on the topology were proposed for many applications such a grid-tied converters without galvanic isolation [16][17][18], with galvanic isolation [19][20][21], and finally for grid-tied PV systems [22][23][24].Z-sources topologies are interesting for PV applications because they can operate as voltage and current source. Additionally, Z-source converters operating as current source can be better applied in medium-high power applications due to the restriction of <1 kV in PV arrays terminals.…”

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Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications

et al. 2020

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In order to address power imbalance in large-scale PV systems, this paper presents a multiport isolated medium-frequency (MF) link to process different power levels from PV arrays, using current-fed Z-source inverters (CZSI) modules to drive the energy from the PV array to the MF link in a single power stage. The MF link provides the galvanic isolation required by many codes and standards to integrate a system to the grid. The multiport configuration of the MF link allows the system to process different power levels on each primary port and, being all ports magnetically coupled, provide balanced power levels on secondary ports which can be used for multilevel converters applications. Additionally, the current-fed version of the Z-source topology offers natural protection against short-circuit damage enhancing reliability of the system. The analysis of CZSI cells and the study of asymmetrical power levels transference, as well as simulation and experimental results are presented.

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A Novel Three-Switch Z-Source SEPIC Inverter

Cited by 8 publications

References 38 publications

Power Converters in Power Electronics: Current Research Trends

Power Converters in Power Electronics: Current Research Trends

A Family of Inverting Buck-Boost Converters With Extended Conversion Ratios

Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications

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