Feasibility Study of Interleaving Approach for Quasi-Z-Source Inverter

Serhii Stepenko; Oleksandr Husev; Dmitri Vinnikov; Artem Fesenko; Oleksandr Matiushkin

doi:10.3390/electronics9020277

Feasibility Study of Interleaving Approach for Quasi-Z-Source Inverter

Electronics ◽

10.3390/electronics9020277 ◽

2020 ◽

Vol 9 (2) ◽

pp. 277 ◽

Cited By ~ 2

Author(s):

Serhii Stepenko ◽

Oleksandr Husev ◽

Dmitri Vinnikov ◽

Artem Fesenko ◽

Oleksandr Matiushkin

Keyword(s):

Power Density ◽

Feasibility Study ◽

Experimental Verification ◽

State Of The Art ◽

Model Simulation ◽

The State ◽

Theoretical Comparison

This paper presents a comprehensive feasibility study of an interleaving approach for a quasi-Z-source inverter. The state-of-the-art approach revealed that an interleaving approach is often used to improve the efficiency and power density that can overcome the problem of oversized passive elements of quasi-Z-source-based converters. The focus is on the application of the interleaving approach in terms of the comparison of several important parameters of a quasi-Z-source inverter. Our analysis includes losses, capacitor and inductor sizes, as well as semiconductor costs. The theoretical comparison is based on the quasi-Z-source inverter model and the losses model. Simulation and experimental verification of theoretical statements are provided. It was found that a 40% reduction of inductor volume, along with 15–20% of efficiency improvements, are achievable. The results are discussed in the conclusion.

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Integration concepts of central ST systems in DHC

10.18777/ieashc-task55-2020-0017 ◽

2020 ◽

Author(s):

Paolo Leoni ◽

Jan Erik Nielsen

Keyword(s):

Feasibility Study ◽

State Of The Art ◽

Heat Pumps ◽

The State ◽

Operating Modes ◽

General Aspects ◽

And Control

This factsheet focuses on the integration hydraulics and control of central ST systems in DHC. The first part gives an overview of the typical integration concepts and operating modes implemented in the state of the art. The second part illustrates general aspects of the integration of heat pumps to achieve higher shares of ST and describes recent projects: two implementation projects (Crailsheim and Salzburg-Lehen), and one feasibility study performed by the Technische Universität Dresden.

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Practical Picture Processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051700 ◽

1974 ◽

Vol 32 ◽

pp. 338-339

Author(s):

T. A. Welton

Keyword(s):

Radiation Damage ◽

Coherence Length ◽

Spatial Information ◽

State Of The Art ◽

Coherent Radiation ◽

The State ◽

Energy Spread ◽

Electron Micrograph ◽

Picture Processing ◽

Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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