Quasi-Z-source half-bridge DC-DC converter for photovoltaic applications

Vinnikov, Dmitri; Chub, Andrii; Huse, Oleksandr; Zaķis, Jānis

doi:10.1109/icit.2015.7125531

Cited by 24 publications

(11 citation statements)

References 9 publications

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“…The symmetrical qZS half-bridge DC-DC converter (Fig. 14) has two identical qZS networks with a neutral node n between the capacitors C 1 and C 3 [58]. Mirror connection of two qZS networks enables the symmetrical structure of the impedance source network.…”

Section: Quasi-z-source (Qzs)mentioning

confidence: 99%

“…For example, a microconverter realized with the transformer based qZS symmetrical half-bridge topology was proposed in [58] for integration of single or two PV panels into the common DC-bus. The concept was verified for operation at constant input current 5 A and input voltage range from 30 V to 58 V, i.e.…”

Section: B Control Application Possibilities and General Comparisonmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

Chub

Vinnikov

Blaabjerg

et al. 2016

IEEE Trans. Power Electron.

Self Cite

207

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Impedance-source converters, an emerging technology in electric energy conversion, overcome limitations of conventional solutions by use of specific impedance-source networks. Focus in this paper is on the topologies of galvanically isolated impedance-source DC-DC converters. These converters are particularly appropriate for distributed generation systems with renewable or alternative energy sources which require input voltage and load regulation in a wide range. We review here the basic topologies for researchers and engineers and classify all the topologies of the impedance-source galvanically isolated DC-DC converters according to the element that transfers energy from the input to the output: a transformer, a coupled inductor, or their combination. This classification reveals advantages and disadvantages as well as a wide space for further research. The paper also outlines the most promising research directions in this field.

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Section: Quasi-z-source (Qzs)mentioning

confidence: 99%

Section: B Control Application Possibilities and General Comparisonmentioning

confidence: 99%

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

Chub

Vinnikov

Blaabjerg

et al. 2016

IEEE Trans. Power Electron.

Self Cite

207

View full text Add to dashboard Cite

show abstract

“…7,8 The presented topologies in these references are not based on cascading technique but due to use of power switch in the structure; the level of converted power is low. 14,15 The presented topology in Vinnikov et al 14 uses 2 impedancenetworks, which are not justifiable from the point of the weight, volume, and cost of the structure. Although this topology has several advantages, there are some disadvantages too.…”

Section: Introductionmentioning

confidence: 99%

“…The half-bridge and full-bridge Z-source inverters can be used in galvanic isolated DC/DC power conversion and photovoltaic systems. 14,15 The presented topology in Vinnikov et al 14 uses 2 impedancenetworks, which are not justifiable from the point of the weight, volume, and cost of the structure. The presented structure in Vinnikov et al 15 has passive elements with large values because only 1 shoot-through (ST) state occurs per switching period.…”

Section: Introductionmentioning

confidence: 99%

A class of half‐bridge quasi‐Z‐source inverters: Detailed steady‐state analysis in various operating states, design considerations, and derivation of general topology

Sedaghati

Asl

2018

Circuit Theory & Apps

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In this paper, 2 types of half-bridge quasi-Z-source inverters with detailed analysis are proposed. Unlike the classical half-bridge inverter, both types of proposed half-bridge inverters can generate zero voltage level in output. Moreover, lack of continuous input current in conventional half-bridge inverters is resolved by the second type of proposed inverters. One of the important advantages of proposed inverters is using the 1 impedance network only with 2 capacitors and 2 inductors; whereas, most of the half-bridge Z-source inverters have more than 1 impedance network or use additional semiconductor elements. In this paper, operation principles of proposed inverters in different operating modes are discussed. Then, design considerations and calculation of critical Inductance in boundary conditions between 2 different states are provided. Next, power circuit of general topology with multiple DC sources and derivation of subcircuits are proposed. Finally, to verify validity of derived equations, simulation results using PSCAD/EMTDC software and experimental results are provided.KEYWORDS half-bridge inverter, quasi-Z-source inverter, shoot-through, Z-source inverter

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“…The HB-ZSI can be used in the electrochemical power supply application [24] and the isolated ZS DC-DC converters [25][26][27]. The isolated quasi-ZS HB DC-DC converter with two Z-networks was presented in [25] for photovoltaic applications. Asymmetrical quasi-ZS HB DC-DC converters were presented in [26].…”

Section: Introductionmentioning

confidence: 99%

Switched‐boost network‐based single‐phase boost DC–AC converter

Nguyen

Cho

Lim

2016

IET Power Electronics

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This study proposes a new single-phase boost DC-AC converter based on the switched-boost network. The proposed converter has the following features: (i) the input current is continuous; (ii) the input and output share the same ground; and (iii) the output voltage waveform has only three levels (positive, zero, and negative levels). Compared with the conventional single-phase half-bridge Z-source inverter (HB-ZSI), the proposed converter uses one additional active switch, but fewer inductors and capacitors. In addition, the peak output voltage of the proposed converter is twice that of the HB-ZSI for the same shoot-through duty cycle. The operating principles, parameter design, small-signal analysis, and comparison with the single-phase HB-ZSI are presented. The simulation and experimental results are shown to verify the operating theory of the proposed converter. Finally, an isolated boost DC-DC converter is developed in the experiment with 42 V input and 600 V output as an example for the application of the proposed converter.

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Quasi-Z-source half-bridge DC-DC converter for photovoltaic applications

Cited by 24 publications

References 9 publications

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

A class of half‐bridge quasi‐Z‐source inverters: Detailed steady‐state analysis in various operating states, design considerations, and derivation of general topology

Switched‐boost network‐based single‐phase boost DC–AC converter

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