Results 201 to 210 of about 7,958,224 (243)

Impedance Enhancement Method for Grid-Connected Inverter Using Delay Compensation Algorithm

IEEE Journal of Emerging and Selected Topics in Power Electronics
With the high penetration of distributed energy resources (DERs) integrated into modern power systems, grid voltage distortions have become major problems that have severe impacts on the operation behavior and power quality of grid-connected LCL ...
Guanhong Song, Chunpu Wu, Jiahui Yan, Qingnian Wang, Yongkang Xiong   +4 more
semanticscholar   +1 more source

Enhanced Resolution for Rapid Broadband Battery Impedance Measurements

2021 IEEE Aerospace Conference (50100), 2021
The inline Rapid Impedance Spectroscopy (iRIS®) sensor provides additional metrics for enhanced battery diagnostics and prognostics. It injects an excitation signal consisting of a sum of sinusoids over a broad frequency range with one period of the lowest frequency and captures the battery response.
Bryce Hill, John Morrison, Dylan Sandefur, Jon P. Christophersen   +3 more
openaire   +1 more source

Broadband RCS Reduction, Antenna Miniaturization, and Bandwidth Enhancement by Combining Reactive Impedance Surface and Polarization Conversion Metasurface

IEEE Transactions on Antennas and Propagation
A metasurface (MS)-based low-profile, low radar cross section (RCS), wideband, and miniaturized microstrip patch array is proposed in this communication.
Qi Zheng, Wenxuan Liu, Qi Zhao, Linghui Kong, Yuhui Ren, Xue-xia Yang   +5 more
semanticscholar   +1 more source

Backscattering Enhancement by an Impedance Rough Surface

Journal of Electromagnetic Waves and Applications, 1991
We investigated the diffusive reflection of electromagnetic waves from a slightly rough impedance surface separating vacuum and dielectric media with a large positive real part of the dielectric constant. The essential peculiarity of this case is the absence of surface waves on the plane surface.
T.N. Antsygina, V.D. Freylikher, S.A. Gredeskul, L.A. Pastur, V.A. Slusarev   +4 more
openaire   +1 more source

Enhancement of kinesthetic perception for microsurgical teleoperation using impedance-shaping

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008
A new control scheme is developed in this paper for a bilateral teleoperation system for microsurgical applications. The main objective of the proposed control scheme is to enhance the kinesthetic perception of the operator. First, the kinesthetic perception, based on psychophysics, is classified into three metrics of detection, sensitivity of ...
Son, H., Lee, D.
openaire   +3 more sources

Faradaic electrochemical impedance spectroscopy for enhanced analyte detection in diagnostics

Biosensors and Bioelectronics, 2021
Electrochemical impedance spectroscopy (EIS) is a widely implementable technique that can be applied to many fields, ranging from disease detection to environmental monitoring. EIS as a biosensing tool allows detection of a broad range of target analytes in point-of-care (POC) and continuous applications.
Madison E, Strong, Jeffrey R, Richards, Manuel, Torres, Connor M, Beck, Jeffrey T, La Belle   +4 more
openaire   +2 more sources

Enhanced Summation Impedance Relay for EHV Transmission Lines

IEEE Transactions on Power Delivery, 2019
For the safety and stability of EHV transmission lines, the identification and isolation of high-resistance single-line-to-ground faults have increasingly been a focus of research. However, the existing protection schemes have shown limitations in different aspects when the fault resistance is extremely high.
Zhengtian Li, Ning Tong, Xiangning Lin, Zhixun Wang, Yuchao Zheng, Ran Lyu, Hang Zhao, Le Chen   +7 more
openaire   +1 more source

Switched Impedance Enhanced-Boost Quasi-Z-Source Inverter

2017 14th IEEE India Council International Conference (INDICON), 2017
Enhanced-boost quasi-Z-source inverter (EB-qZSI) is proposed in this paper. Similar to the enhanced-boost ZSI and continuous input current enhanced-boost qZSI with two switched-impedance networks, this proposed inverter topology possess very high voltage boost at low shoot-through duty ratio and high modulation index to provide better quality output ...
Vadthya Jagan, Sharmili Das
openaire   +1 more source

Does knowledge management enhance or impede innovation speed?

Journal of Knowledge Management, 2020
PurposeThe purpose of this study is to develop a theoretical model for examining how innovation speed mediates the relationship between knowledge management (KM) and performance and empirically tests the proposed model using data collected in the USA and China over three years.Design/methodology/approachTo avoid common method bias and increase ability ...
Haili Zhang, Xiaotang Zhang, Michael Song   +2 more
openaire   +1 more source

Isolation Enhancement for MIMO Patch Antennas Using Near-Field Resonators as Coupling-Mode Transducers

IEEE Transactions on Antennas and Propagation, 2019
In this paper, a novel decoupling technique for closely packed patch antennas using near-field resonator (NFR) above each antenna element is proposed.
Min Li, Bin Zhong, S. Cheung
semanticscholar   +1 more source