Results 11 to 20 of about 137,542 (360)

Van der Waals negative capacitance transistors

open access: yesNature Communications, 2019
The adaptation to atomically thin 2D semiconductors and van der Waals layered ferroelectrics can enable negative capacitance transistors with superior performance and bendability.
Xiaowei Wang   +14 more
doaj   +1 more source

Master–slave current regulation of an LCL-filter-based grid-connected inverter under variable grid condition

open access: yesThe Journal of Engineering, 2019
To ease the heavy burden of inverter control, including line current regulation, harmonic current suppression, filter resonance suppression, grid distortion suppression, phase locked loop etc., the study proposes a master–slave current regulation method ...
Yuanbin He   +4 more
doaj   +1 more source

Additional reactive power control and emergency control of the ±1100 kV UHVDC system with a hierarchical connection mode

open access: yesThe Journal of Engineering, 2019
This paper proposes an additional reactive power control strategy and an emergency control strategy for ±1100 kV ultra-high voltage direct current (UHVDC) system with a hierarchical connection mode, in which the inverter station connect to two AC systems
Yongxin Xiong, Wei Yao, Jinyu Wen
doaj   +1 more source

Tunnel-diode invertor

open access: yesElectronics Letters, 1967
A modification of the conventional tunnel-diode monostable circuit which gives an output signal of reversed polarity with respect to the polarity of the input is described. The circuit is simple and reliable and employs one tunnel diode only.
G. Manuzio, L. Racca
openaire   +1 more source

Control electronics for a neuro-electronic interface implemented in a gate array [PDF]

open access: yes, 1995
Presents a Gate Array for implementing electronic circuitry to control multi-electrode arrays, which consist of 128 microelectrodes.
Frieswijk, Theo A.   +3 more
core   +2 more sources

Simulation and analysis of  ± 1100 kV UHVDC transmission system with hierarchical connection mode based on PSCAD/EMTDC

open access: yesThe Journal of Engineering, 2019
This study first introduces the structure and principle of the control system of ultra-high-voltage direct current (UHVDC) transmission system with hierarchical connection mode, mainly including the whole control logic, the voltage balance control module
Ziyuan Ren   +5 more
doaj   +1 more source

The role of tibialis posterior fatigue on foot kinematics during walking [PDF]

open access: yes, 2010
Background The purpose of this study was to investigate the effect of localised tibialis posterior muscle fatigue on foot kinematics during walking. It was hypothesised that following fatigue, subjects would demonstrate greater forefoot and rearfoot ...
Michael B Pohl   +26 more
core   +2 more sources

Wind energy conversion system based on open-end winding three-phase PMSG coupled with ac−dc buck-boost converter

open access: yesThe Journal of Engineering, 2019
This study proposes a new back-to-back (BTB) current source converter (CSC) configuration and presents its application for variable speed wind energy conversion system.
Ibrahim Abdelsalam   +3 more
doaj   +1 more source

Fault response comparison of LCC–MMC hybrid topologies and conventional HVDC topology

open access: yesThe Journal of Engineering, 2018
The modular multilevel converter (MMC) can be used to upgrade conventional line commutated converter-based HVDC systems (LCC-HVDC), construct the hybrid topologies of LCC and MMC to acquire better fault responses.
Boliang Lou   +4 more
doaj   +1 more source

Synthesis of coupling matrix for lossy filter networks [PDF]

open access: yes, 2015
A generalized method for the synthesis of lossy microwave filters is given in this paper. An equation on the polynomials of S parameters is given to replace the power conservation.
Hunter, IC, Meng, M
core   +1 more source

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