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IEEE transactions on industrial electronics (1982. Print), 2023
The phase-locked loop (PLL)-caused couplings on the grid-connected converter (GCC) are strengthened by increasing its bandwidth and then incur synchronization instability.
X. Lin, Ruoxue Yu, Jingrong Yu, H. Wen
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The phase-locked loop (PLL)-caused couplings on the grid-connected converter (GCC) are strengthened by increasing its bandwidth and then incur synchronization instability.
X. Lin, Ruoxue Yu, Jingrong Yu, H. Wen
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Environment estimation for enhanced impedance control
Proceedings of 1995 IEEE International Conference on Robotics and Automation, 2002Impedance control is a popular method of controlling the dynamic response a robot has to external forces. The advantage of such a control paradigm is the ability to manipulate in both unconstrained and constrained environments. Unlike hybrid control methods that attempt to control forces and motions in orthogonal directions, impedance control consists ...
L.J. Love, W.J. Book
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ACS Nano, 2021
Triboelectric nanogenerators (TENGs), which hold great promise for sustainably powering wearable electronics by harvesting distributed mechanical energy, are still severely limited by their unsatisfactory power density, small capacitance, and high ...
Hai Lu Wang +4 more
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Triboelectric nanogenerators (TENGs), which hold great promise for sustainably powering wearable electronics by harvesting distributed mechanical energy, are still severely limited by their unsatisfactory power density, small capacitance, and high ...
Hai Lu Wang +4 more
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Explicit Design of Impedance Matching Networks for Robust MHz WPT Systems With Different Features
IEEE transactions on power electronics, 2022This article develops explicit design of an impedance matching network (IMN) to enhance the robustness of megahertz (MHz) wireless power transfer (WPT) systems against variations in their final load and coil coupling.
Yaoxia Shao +3 more
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Improved Weak Grids Synchronization Unit for Passivity Enhancement of Grid-Connected Inverter
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022The weak grids may be unstable due to the negative resistance behavior of the grid-connected inverter (GCI) caused by the synchronization unit with the phase-locked loop (PLL).
X. Lin +4 more
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Anisotropic impedance surfaces for enhanced antenna isolation
SPIE Proceedings, 2015Anisotropic impedance surfaces, which include metasurfaces and high impedance surfaces (HIS), can be designed to control the amplitude and propagation direction of surface electromagnetic waves and are an effective means to enhance the isolation between antennas that share a common ground plane.
Joseph A. Miragliotta +2 more
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Impedance matching for enhanced waveguide/photodetector integration
Applied Physics Letters, 1989A novel impedance-matched structure is proposed for improved coupling in evanescently coupled, integrated waveguide/photodetectors. We show that insertion of an impedance-matching layer between waveguide and detector regions can improve the coupling by a factor of ≊7, resulting in shorter detectors with lower capacitance and higher frequency response ...
R. J. Deri, O. Wada
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Impedance Bandwidth Enhancement For UWB Slot Antenna
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications, 2007A design for enhancing impedance bandwidth of wideband slot antenna is proposed and studied. The wideband slot antenna with a finite ground plane on the 50 ohm SMA connector is used for enhancing the impedance bandwidth. The measured results of the proposed antenna show that the impedance bandwidth is related with dimensions of a finite ground plane ...
Dau-Chyrh Chang +3 more
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Backscattering enhancement from surfaces with random impedance
Physics Letters A, 1993Abstract Intensity enchancement in the retroreflection direction is studied for waves scattered by a random interface which has a bound state (surface wave). We have found that the enhanced backscattering peak appears as the result of competition of two mechanism: multiple scattering of the surface wave along the interface, and its leakage to the ...
V. Freilikher, I. Yurkevich
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Acoustic pressure enhancing metamaterials through impedance contrast
The Journal of the Acoustical Society of America, 2019Acoustic pressure enhancing devices are widely used to extend the range of sensors used for detecting weak and distant sounds. However, conventional sound enhancing devices such as acoustic horns and parabolic reflectors require bulky structures and thus limit miniaturization of sensing systems. To overcome this limitation, metamaterial techniques have
Hyung-Suk Kwon, Bogdan Ioan Popa
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