Results 21 to 30 of about 343,485 (300)

Ultraviolet-spot distribution and photon-count variation characteristics in direct current partial discharge [PDF]

open access: yesAIP Advances
To address the challenges of ultraviolet (UV) imaging technology for partial discharge (PD) in high-voltage direct current (HVDC) converter stations (equipment), a comprehensive UV image processing methodology has been developed, and a needle–needle ...
Xiuhai Wu   +6 more
doaj   +1 more source

Experimental Validation of Different Control Techniques Applied to a Five-Phase Open-End Winding Induction Motor

open access: yesEnergies, 2023
Open-end winding five-phase induction motor (OeW-5PIM) configuration is used in industrial applications, where minimization in the total harmonic currents and high reliability are needed.
Saad Khadar   +5 more
doaj   +1 more source

Angular dependence in ultraviolet imaging of HVDC partial discharges: Mechanism investigation and correction approach [PDF]

open access: yesAIP Advances
To address the observation angle effects on the diagnosis accuracy of ultraviolet (UV) imaging for partial discharge (PD) monitoring in high-voltage direct current (HVDC) equipment, this study investigates the underlying mechanism and develops a ...
Jinwei Lv   +6 more
doaj   +1 more source

Overview on Grid-Forming Inverter Control Methods

open access: yesEnergies, 2020
In this paper, different control approaches for grid-forming inverters are discussed and compared with the grid-forming properties of synchronous machines. Grid-forming inverters are able to operate AC grids with or without rotating machines. In the past,
Peter Unruh   +3 more
doaj   +1 more source

Development of a 1 kA, 50 Hz Superconducting Converter [PDF]

open access: yes, 1995
A single-phase, thermally switched superconducting power converter operating at mains frequency is being developed and tested by the authors. Typical design values of the device are: input voltage of 220 V; input current of 7 A; output voltage of 1 V ...
Fedorovsky, Michael A.   +3 more
core   +2 more sources

Maximum power point tracking converter based on the open-circuit voltage method for thermoelectric generators [PDF]

open access: yes, 2015
Thermoelectric generators (TEGs) convert heat energy into electricity in a quantity dependant on the temperature difference across them and the electrical load applied.
Knox, Andrew, Montecucco, Andrea
core   +1 more source

A transformerless three‐level three‐phase boost PWM inverter for PV applications

open access: yesIET Power Electronics, 2021
Multilevel converters have seen rising demands in the past decades, due to their increased power ratings, enhanced power quality, low switching losses and reduced electromagnetic interference.
Aswin Palanisamy   +5 more
doaj   +1 more source

FPGA Digital Architecture for Multilevel Synchronous Optimal PulseWidth ModulationWith Seamless Pulse Pattern Transitions

open access: yesEletrônica de Potência, 2023
received the B.S. degrees in electrical engineering from the University Center of Jaraguá do Sul (UNERJ), Jaraguá do Sul, Brazil, in 2009, and the M.S.
Jackson Lago   +2 more
doaj   +1 more source

Research on Control Strategy of Voltage Source Full Power Wind Power Converter

open access: yesKongzhi Yu Xinxi Jishu, 2023
In the operating environment of power system with weak grid characteristics, the traditional current source converter control mode is prone to vibration, which increases the crossing difficulty and off-grid probability of wind turbines.
ZHOU Wang   +5 more
doaj   +3 more sources

Nonlinear photon emission and discharge mode transitions in HVDC needle–needle electrodes: Insights from UV photon spot distribution mapping [PDF]

open access: yesAIP Advances
This study proposes a methodology for the development of ultraviolet (UV) spot distribution mapping with probabilistic processing, with the objective of addressing the challenges associated with the monitoring of partial discharge (PD) in high-voltage ...
Zhiliang Yin   +5 more
doaj   +1 more source

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