Results 11 to 20 of about 282,222 (299)

Impact of converter interface type on the protection requirements for DC aircraft power systems [PDF]

open access: yes, 2012
The utilization of converter interfaces has the potential to significantly alter the protection system design requirements in future aircraft platforms.
Burt, Graeme   +3 more
core   +4 more sources

A hybrid multilevel converter for medium and high voltage applications [PDF]

open access: yes, 2010
This paper investigates the suitability of the hybrid multilevel converter for medium and high voltage application. The converter operation, modulation, and capacitor voltage balancing method are described in detail.
Ahmed, Khaled   +4 more
core   +3 more sources

Comparison between two VSC-HVDC transmission systems technologies : modular and neutral point clamped multilevel converter [PDF]

open access: yes, 2009
The paper presents a detail comparison between two voltage source converter high voltage dc transmission systems, the first is based on neutral point-clamped (also known as HVDC-Light) and the second is based on innovative modular multilevel converter ...
Anaya-Lara, O.   +5 more
core   +3 more sources

The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability [PDF]

open access: yes, 2013
This paper explains the working principles, supported by simulation results, of a new converter topology intended for HVDC applications, called the alternate arm converter (AAC).
Merlin, Michael MC   +6 more
core   +1 more source

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

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

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter [PDF]

open access: yes, 2013
Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase voltage source inverter ...
ARPILLIERE, Michel   +5 more
core   +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

TRANSIENT MODELING IN COMMON DC LINK OF POWER CONVERTERS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents a mathematical model of an electric drive convertor operating in a common DC link for the 280-kW power level of the BELAZ-90 mining truck. The model is developed in MATLAB Simulink.
Alecksey S. Anuchin   +3 more
doaj   +1 more source

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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