Results 31 to 40 of about 11,875 (232)

IGBT Module Lifetime Prediction Technology for Rail Transit

open access: yes机车电传动, 2020
Rail transport IGBT module lifetime prediction technology has become research focuses due to China's rail transit vehicles entering the stage of overhaul, thus scientific module lifetime prediction method is the key to realize the IGBT converter life ...
Bin WANG, Lin CAO
doaj  

Zebra battery technologies for all electric smart car [PDF]

open access: yes, 2006
This paper describes the operational behaviour and advantages of the high temperature, sodium nickel chloride (Zebra) battery, for use in all electric urban (city) vehicles.
Bingham, Chris   +2 more
core   +1 more source

Electro-thermal modelling of multi chip power modules for high power converter application [PDF]

open access: yes, 2017
In a compact power electronics systems such as converters, thermal interaction between components is inevitable. Traditional RC lumped modelling method does not take that into account and this would cause inaccuracy in the predicted temperature in the ...
Bailey, Christopher   +2 more
core   +1 more source

Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability [PDF]

open access: yes, 2014
One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed.
Aboushady, A.A., Ahmed, K.H.
core   +2 more sources

A Hybrid EV Charging Architecture Integrating DC Fast Charging and Wireless Power Transfer

open access: yesEnergy Science &Engineering, EarlyView.
A hybrid EV charging architecture combining DC fast charging and wireless power transfer is proposed. The system achieves high efficiency, grid compliance, and reliable bidirectional operation, offering a scalable solution that enhances user convenience while paving the way for smarter, future‐ready EV charging infrastructure.
Ali Almaktoof   +3 more
wiley   +1 more source

Research on Effect of Air Gap between IGBT Module and Heatsink on Thermal Performance

open access: yes机车电传动, 2020
Thermal grease is used to reduce the contact resistance of the contact interface between the IGBT module and the heatsink in the field of rail transit.
Hongsheng YANG, Guomeng SONG, Xiong WANG
doaj  

Subsidiary capability upgrading and parent-subsidiary relationship: insights from a Chinese acquisition in the UK [PDF]

open access: yes, 2015
Purpose: - This study aims to explore capability upgrading of EMNE’s subsidiaries in developed countries and how the parent-subsidiary relationship influences such upgrading.
Birkinshaw J.   +3 more
core   +1 more source

Automated quality assurance of HDR brachytherapy: Evaluation of Dwell‐position accuracy and Dwell‐time linearity via image processing of radiochromic films

open access: yesPrecision Radiation Oncology, EarlyView.
This study develops a method combining radiochromic film and image processing to assess HDR brachytherapy source accuracy and linearity, achieving high precision and efficiency . Abstract Purpose To develop and validate a fully automated quality assurance method for high‐dose rate (HDR) brachytherapy, enabling the precise evaluation of source dwell ...
Qingqing Yuan   +4 more
wiley   +1 more source

Experimental and mechanical characterizations of a lead free solder alloy for electronic devices [PDF]

open access: yes, 2012
Electronic power modules devices are paramount components in the aeronautical,automotive and military applications. The solder layers are the most critical parts of the module and are usually subjected in their whole life to complex loading conditions ...
Alexis, Joël   +3 more
core   +2 more sources

Thermal model of the IGBT module

open access: yesJournal of Physics: Conference Series, 2018
In the paper the dynamic compact thermal model of the IGBT module is proposed. This model makes it possible to calculate internal temperatures of diodes and transistors included in the considered IGBT module with selfheating in each device and mutual thermal couplings between them taken into account.
Paweł Górecki   +2 more
openaire   +1 more source

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