Publications

Showing 40 results for Author: Shajjad S. Chowdhury

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Aug, 2019

Conference Paper

Enabling Technologies for Compact Integrated Electric Drives for Automotive Traction Applications

The electric traction drive is the main consumer of the stored energy in an electric vehicle. Therefore, the drive system must perform with high efficiency to maximize the vehicle range for given battery capacity. Since the introduction of hybrid electric vehicles, various innovative traction drive technologies have been implemented in commercially available electric vehic…
Feb, 2019

Journal

Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation

This study proposes a modified modulated model predictive control (MMPC) scheme to control an open-end winding induction motor drive using an asymmetric source dual inverter with one floating bridge. The control algorithm uses a modulation algorithm within the cost function optimisation scheme to avoid variable switching frequency. The voltage of the floating capacitor is…
Feb, 2019

Conference Paper

A Twin Spool Engine Emulator for the Study of Power Exchange Idea

The More Electric Aircraft (MEA) engine, with electrical machines on both HP and LP shafts, makes it possible to transfer power electrically from one spool to another. Preliminary results have shown considerable improvement in turbofan performance in terms of fuel consumption, engine stability and compatible thrust with flight mission. In order to prove the concept of powe…
Oct, 2018

Journal

An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge

This paper proposes a capacitor voltage regulation method for the dual converter with a floating bridge for aerospace applications. This topology has previously been reported, but with a constrained voltage utilisation factor due to the need for capacitor voltage regulations. In this paper, the effect of switching states on the voltage variation of capacitor is quantitativ…

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Publications

Enabling Technologies for Compact Integrated Electric Drives for Automotive Traction Applications

Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation

A Twin Spool Engine Emulator for the Study of Power Exchange Idea

An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge