Results 11 to 20 of about 1,095,227 (294)
Z‐source matrix rectifier [PDF]
IET Power Electronics, 2016 This study presents a novel Z‐source matrix rectifier (ZSMR). To overcome the inherent disadvantage that the voltage transfer ratio for traditional matrix rectifier (MR) cannot be more than 0.866, a Z‐source network has been combined with the MR. The proposed rectifier realises a voltage‐boost function and the Z‐source network also serves as power ...
Hongchen, Liu +5 more
openaire +5 more sources
A strongly heated neutron star in the transient Z source MAXI J0556-332 [PDF]
, 2014 We present Chandra, XMM-Newton, and Swift observations of the quiescent neutron star in the transient low-mass X-ray binary MAXI J0556-332. Observations of the source made during outburst (with the Rossi X-ray Timing Explorer) reveal tracks in its X-ray ...
Cackett, Edward M. +7 more
core +28 more sources
Z‐source inverter topologies with switched Z‐impedance networks: A review
IET Power Electronics, 2021 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 ...
Nafis Subhani +3 more
doaj +1 more source
Novel Sliding Mode Control Approach for Quasi-Z-Source Converters with Improved Performance [PDF]
International Journal of Industrial Electronics, Control and OptimizationA type of converter called Quasi-Z-source converters (QZSC) is becoming more popular due to its benefits, such as operating in a single stage, having smaller components, and maintaining continuous input current and a common ground.
Gholam Reza Shahabadi, Majid Reza Naseh
doaj +1 more source
IEEE Access, 2021 The integration of a Z-source network with a modular multilevel converter (MMC) to provide voltage step-up function is proposed in this paper. The proposed Z-source modular multilevel converter (ZS-MMC) uses a Z-source network connected between the DC ...
Fatma A. Khera +2 more
doaj +1 more source
Discovery of KiloHertz Quasi-Periodic Oscillations in the Z source Cygnus X-2 [PDF]
, 1997 During observations with RXTE we discovered two simultaneous kHz QPOs near 500 Hz and 860 Hz in the Z source Cyg X-2. In the X-ray color-color diagram and hardness-intensity diagram (HID) a clear Z track was traced out. A single kHz QPO peak was detected
Brian Vaughan +11 more
core +3 more sources
A New Topology of Embedded Z-H Buck-Boost Converter [PDF]
AUT Journal of Electrical Engineering, 2018 In this paper, a new embedded Z-H (EZ-H) buck-boost converter is proposed. In this topology, two identical dc voltage sources are embedded in a LC network in a series connection with the inductors. The proposed converter eliminates the shoot-through (ST)
E. Babaei +2 more
doaj +1 more source
The infrared counterpart of the Z source GX5-1 [PDF]
, 2000 We have obtained UKIRT infrared observations of the field of the bright Galactic Z source GX5-1. From an astrometric plate solution tied to Tycho-ACT standards we have obtained accurate positions for the stars in our field which, combined with an ...
Fender, Rob P. +3 more
core +2 more sources
A Switched Quasi-Z-Source Inverter with Continuous Input Currents
Energies, 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]
, 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