arXiv subjects

Thomas Conway

Publications and source records attributed to Thomas Conway.

3 recordsLinked to original sources

arXiv2026

A Low Cost Discrete Digital Isolator Circuit

This work presents a fully discrete, low cost digital isolator requiring no specialized ICs and implemented entirely with general purpose transistors and a two layer PCB embedded air core transformer. The design avoids vendor lock in and long term component obsolescence risks, while providing >1 kV isolation, ~200 ns propagation delay, and validated NRZ data rates of 1 Mbps. A modified dual oscillator architecture enables inherent hardware lockout suitable for half bridge gate driver applications. Measured performance and PCB layout guidelines are provided.

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arXiv2018

An Isolated Power Factor Corrected Power Supply Utilizing the Transformer Leakage Inductance

The widespread use of electronic devices increases the need for compact power factor corrected power supplies. This paper describes an isolated power factor corrected power supply that utilizes the leakage inductance of the isolation transformer to provide boost inductor functionality. The bulk capacitor is in the isolated part of the power supply allowing for controlled startup without dedicated surge limiting components. A control method based on switch timing and input/output voltage measurements is developed to jointly achieve voltage regulation and input power factor control. A prototype design is implemented with detailed measurements and waveforms shown to confirm the desired functionality.

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arXiv2016

On the effects of a centralized computer routing and reservation system on the electric vehicle public charging network

One solution to the limited range of battery electric vehicles is the provision of a public charging infrastructure to enable longer journeys. This paper describes a simulation model of a centralized computer routing and reservation system based on the current charging infrastructure deployed (early 2016) in Ireland using the Irish population density and a trip length distribution. Monte Carlo simulations show quantitatively the effects of EV on-board charger power rating and the advantages of a routing and reservation systems on a country wide scale in terms of the number of electric vehicles that can be supported. The effect of charge point fault rates based on the currently deployed charging infrastructure is also assessed.

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