Results 21 to 30 of about 1,061,367 (275)

A Switched Quasi-Z-Source Inverter with Continuous Input Currents

open access: yesEnergies, 2020
Impedance source converters as single-stage power conversion alternatives can boost and regulate the output voltages of renewable energy sources. Nevertheless, they, also known as Z-source inverters (ZSIs), still suffer from limited voltage gains and ...
Jing Yuan   +2 more
doaj   +1 more source

Spectral analysis of LMC X-2 with XMM/Newton: unveiling the emission process in the extragalactic Z-source [PDF]

open access: yes, 2007
We present the results of the analysis of an archival observation of LMC X-2 performed with XMM/Newton. The spectra taken by high-precision instruments have never been analyzed before.
A. D'Aì   +30 more
core   +2 more sources

Switched Z-Source/Quasi-Z-Source DC-DC Converters With Reduced Passive Components for Photovoltaic Systems

open access: yesIEEE Access, 2019
In this paper, switched Z-source/quasi-Z-source dc-dc converters (SZSC/SQZSCs) are proposed for the photovoltaic (PV) grid-connected power system, where the high step-up dc-dc converters are required to boost the low voltage to high voltage.
Junfeng Liu   +3 more
doaj   +1 more source

Space-vector-modulated three-level inverters with a single Z-source network [PDF]

open access: yes, 2012
The Z-source inverter is a relatively recent converter topology that exhibits both voltage-buck and voltage-boost capability. The Z-source concept can be applied to all dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion whether two-level or ...
Clare, Jon C.   +3 more
core   +1 more source

Series-type switched-inductor Z-source inverter

open access: yesCES Transactions on Electrical Machines and Systems, 2020
To solve the disadvantages of the traditional Z-source inverter (ZSI), this paper investigates a series-type switched-inductor Z-source inverter (SSI-ZSI) topology.
Xupeng Fang   +3 more
doaj   +1 more source

An Improved Quasi-Z-Source Boost DC-DC Converter Using Single-Stage Switched-Inductor Boosting Technique

open access: yesMachines, 2022
A modified single-stage Quasi-Z-Source (QZS) boost DC-DC converter using a single MOSFET switch with a single-stage switched-inductor (SI) network is proposed in this paper.
Manoharan Premkumar   +5 more
doaj   +1 more source

Classification of Power Density Spectrum Features and Estimation of the Delta-Invariant Value for the Z Source GX 340+0 [PDF]

open access: yes, 2001
We present a theoretical analysis of Rossi X-ray Timing Explorer data of Z source GX 340+0 obtained by Jonker et al. In the frameworks of the recently formulated the transition layer model the delta-angle is an angle between the neutron star (NS ...
Osherovich, Vladimir, Titarchuk, Lev
core   +3 more sources

A Common-Mode Voltage Reduction PWM Strategy for Three-Phase Quasi-Z-Source Inverter With Optimized Switching Losses

open access: yesIEEE Access, 2023
The application of the Z-source/quasi-Z-source inverter exacerbates the hazard of common mode voltage in motor drives or photovoltaic systems. The existing reduced common-mode voltage pulse width modulation (RCMV-PWM) technique applied to the Z-source ...
Yizhan Jiang   +4 more
doaj   +1 more source

Large-signal stability conditions for semi-quasi-Z-source inverters: switched and averaged models

open access: yes, 2013
The recently introduced semi-quasi-Z-source in- verter can be interpreted as a DC-DC converter whose input- output voltage gain may take any value between minus infinity and 1 depending on the applied duty cycle. In order to generate a sinusoidal voltage
De Nicolo, Lisandro   +2 more
core   +1 more source

The variable radio counterpart and possible large-scale jet of the new Z-source XTE J1701-462

open access: yes, 2007
We report radio observations, made with the Australia Telescope Compact Array, of the X-ray transient XTE J1701-462. This system has been classified as a new `Z' source, displaying characteristic patterns of behaviour probably associated with accretion ...
Corbel   +6 more
core   +2 more sources

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