Publications de Uzair Javaid | EPFL Graph Search

Stability Analysis of Multi-Port MVDC Distribution Networks for All-Electric Ships

Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández, Wim Van der Merwe

2020

MVDC Supply Technologies for Marine Electrical Distribution Systems

Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández, Wim Van der Merwe

The increase in the popularity of the medium voltage dc (MVDC) electrical distribution, as a possible evolution of the medium voltage ac (MVAC) electrical distribution for the ship on-board power systems, arises a need for a comparative evaluation and demo ...

2018

MVDC Distribution Fed High Power Multi-Motor Drives

Uzair Javaid

High power variable speed drives play a major role in many industrial applications. At the moment, these high power loads are supplied by the source (grid/generator) through the state-of-the-art MVAC power distribution network. The voltage levels, in these ...

EPFL2018

Dynamic Assessment of Source–Load Interactions in Marine MVDC Distribution

Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández, Wim Van der Merwe

Medium-voltage direct-current (MVDC) distribution is a possible replacement due to the advancements in power electronic technologies, for existing medium-voltage ac distribution on ships. The new systems based on MVDC are expected to increase fuel efficien ...

Institute of Electrical and Electronics Engineers2017

Marine MVDC Multi-Phase Multi-Pulse Supply

Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández, Wim Van der Merwe

This paper presents comparative evaluation and explores the different technologies suitable for the implementation of the Medium Voltage Direct Current (MVDC) electrical supplies for the marine on-board electrical distribution network. To realize the MVDC ...

2017

Interactions Between Bandwidth Limited CPLs and MMC Based MVDC Supply

Alexandre François Christe, Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández

With the improvement in the power electronic technologies, medium voltage dc (MVDC) electrical distribution systems are being considered for on-shore and off-shore applications. These future MVDC electrical distribution systems are expected to provide the ...

2017

Conformal Mapping of Impedance Stability Models for System-Level Dynamics Assessments

Uzair Javaid, Drazen Dujic, Francisco Daniel Freijedo Fernández

Impedance stability methods are suitable for assessing the dynamics of power converters controllers, but also for ac/dc microgrids system level studies. This work proposes the combination of impedance modeling and conformal mapping for the identification o ...

2017

MVDC Marine Electrical Distribution: Are we ready?

Uzair Javaid, Drazen Dujic, Wim Van der Merwe

Marine high-power on-board electrical systems are predominantly utilizing three-phase medium voltage alternating current (MVAC) distribution. Depending on the size and purpose of the ship, on-board electrical systems provide supply to loads in excess of 60 ...

2015

Arbitrary order generalized state space average modeling of switching converters

Uzair Javaid, Drazen Dujic

Generalized State Space Average Modeling (GSSAM), of switching converters, offers an opportunity to improve fidelity of a model by inclusion of different harmonic components. Yet, the inclusion of each frequency component contributes to an increase in the ...

IEEE2015