Results 1 to 10 of about 310,366 (299)

Topology searching algorithm for multi-port hybrid circuit breakers based on graph theory

open access: yesFrontiers in Energy Research, 2023
Due to the significant advantages of low cost, integrated multi-port hybrid DC circuit breakers (M-HCBs) with a reduced number of devices have attracted extensive attention for fault blocking in multi-terminal VSC-HVDC system.
Songming He   +9 more
doaj   +3 more sources

Analog Modeling of Fractional-Order Elements: A Classical Circuit Theory Approach

open access: yesIEEE Access, 2021
In this paper a comprehensive procedure for the analog modeling of Fractional-Order Elements (FOEs) is presented. Unlike most already proposed techniques, a standard approach from classical circuit theory is applied.
Neven Mijat   +2 more
doaj   +4 more sources

A Fault Diagnosis Method of Modular Analog Circuit Based on SVDD and D–S Evidence Theory

open access: yesSensors, 2021
In the actual fault diagnosis process of an analog circuit, there is often a problem due to the lack of fault samples, leading to the low-accuracy of diagnostic models.
Peng Sun   +4 more
doaj   +2 more sources

Negative Group Delay Theory of a Four-Port RC-Network Feedback Operational Amplifier

open access: yesIEEE Access, 2019
An innovative negative group delay (NGD) theory based on a unity direct chain feedback (UDCF) circuit topology is developed in this paper. This NGD circuit is an active cell constituted by an operational amplifier in feedback with a four-port RC-network.
Fayu Wan   +6 more
doaj   +2 more sources

Time-efficient fault detection and diagnosis system for analog circuits [PDF]

open access: yesAutomatika, 2018
Time-efficient fault analysis and diagnosis of analog circuits are the most important prerequisites to achieve online health monitoring of electronic equipments, which are involving continuing challenges of ultra-large-scale integration, component ...
Qiwu Luo, Yigang He, Yichuang Sun
doaj   +4 more sources

An ultra-compact and high isolated 8 × 8 MIMO antenna system for 5G NR-n46 and n79 band applications [PDF]

open access: yesScientific Reports
This article presents an ultra-compact (1.02λ × 1.02λ mm2) and highly isolated 8-port MIMO antenna designed for NR-n46 and n79 bands, as well as licensed assisted access (LAA).
Brijesh Mishra   +6 more
doaj   +2 more sources

An Electronically Adjustable Floating Memcapacitor Emulator Circuit Using CDBA

open access: yesApplied Sciences
Memristive elements, known as memristors, memcapacitors and meminductors, have become an important topic of research in the electronics world in recent years.
Sevgi Gursul Kalac   +2 more
doaj   +2 more sources

Improving Ultrasonic Power Transfer in Air Through Hybrid S-Parameter Modeling and High-Efficiency Compensation [PDF]

open access: yesSensors
Ultrasonic Power Transfer (UPT) offers several advantages over electromagnetic-based wireless power transfer (WPT), but its implementation in the air still faces significant challenges.
Liu Liu, Waleed H. Abdulla
doaj   +2 more sources

Novel Tee-Shaped Topology Theory of Low- and High-Pass NGD Double-Type Function

open access: yesIEEE Access, 2022
Recent investigation reports that certain electronic circuits operate with the unfamiliar negative group delay (NGD) function. It is fundamentally stated that the NGD circuits can be classified in different types.
Hongchuan Jia   +8 more
doaj   +1 more source

A short-circuit current calculation method considering phase characteristics of wind power and photovoltaic and components between new energy units and grid

open access: yes电力工程技术, 2023
A large number of new energy units represented by wind power and photovoltaics are connected to the grid, making accurate calculation and verification of short-circuit current difficult. Given the phase mapping and the influence of electrical components (
QIAO Li   +5 more
doaj   +1 more source

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