Výsledky vyhledávání - "Davidson, J.N."

Comparison of BSPT and PZT piezoelectric ceramic transformers for high temperature power supplies

Autor: Forrester, J., Li, L., Yang, Z., Davidson, J.N., Sinclair, D.C., Reaney, I.M., Foster, M.P., Stone, D.A.

High temperature power electronics is an advancing area of research, especially given the widespread availability of wide bandgap semiconductors. In this work a suitability analysis of (1−x)BiScO3–xPbTiO3 (BSPT) as a material for high temperature

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::8532d5377e0979d26766848d16d63f68

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Evaluation of silicon MOSFETs and GaN HEMTs in soft‐switched and hard‐switched DC‐DC boost converters for domestic PV applications

Autor: Ansari, S.A., Davidson, J.N., Foster, M.P.

Hard‐switched high‐gain DC‐DC converters such as the boost converter play an important role in renewable energy systems. Research to increase their efficiency is important and can be achieved using soft‐switching techniques; however, that app

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::281df01387d092534eeac4e6ecd90c41
https://eprints.whiterose.ac.uk/172013/1/pel2.12085.pdf

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Single‐active switch high‐voltage gain DC–DC converter using a non‐coupled inductor

Autor: Mizani, A., Ansari, S.A., Shoulaie, A., Davidson, J.N., Foster, M.P.

A single‐active switch high‐voltage gain non‐coupled inductor DC–DC converter is presented. The introduced converter achieves high step‐up gain without using any coupled inductors or transformers, provides high efficiency, and has a simple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::225ca242e717b892f6d04b34a0c5078b
https://eprints.whiterose.ac.uk/172011/1/pel2.12007.pdf

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Influence of spurious modes on the efficiency of piezoelectric transformers : a sensitivity analysis

Autor: Forrester, J., Davidson, J.N., Foster, M.P., Stone, D.A.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::f8d7f6f8eaf81cab03e5dd9481b22db1

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Resonant current estimation and phase-locked loop feedback design for piezoelectric transformer-based power supplies

Autor: Yang, Z., Forrester, J., Davidson, J.N., Foster, M.P., Stone, D.A.

A control system to achieve zero-voltage switching (ZVS) for an inductorless half-bridge piezoelectric transformer-based resonant power supply is presented. Both the phase and frequency of the resonant current are locked to the switching waveform usi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::e0c4cdf35fd0f9aab651a3f78d1a12ea

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Equivalent circuit parameter extraction of low-capacitance high-damping PTs

Autor: Forrester, J., Li, L., Davidson, J.N., Foster, M.P., Stone, D.A., Sinclair, D.C., Reaney, I.M.

Existing equivalent circuit extraction techniques are inaccurate for piezoelectric transformers (PTs) with low-input capacitance or high damping. A new method is presented, offering improved accuracy in both damping resistance and resonant frequency

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::841424c758f7593583e558d7f38e4af4

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PLL controller for achieving zero-voltage switching (ZVS) in inductorless half-bridge drive piezoelectric transformer resonant power supplies

Autor: Foster, M.P., Davidson, J.N., Stone, D.A., Yappa, R.S.

Publikováno v: Journal of Engineering

Inductorless half-bridge, piezoelectric transformer (PT) resonant power supplies require careful control if zero voltage switching of the MOSFETs is to be achieved. Here we describe how a phase-locked loop may be used to achieve this by ensuring adeq

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=core_ac_uk__::4a7e6eda164b18b646ca2917bf9ed496
https://eprints.whiterose.ac.uk/130264/8/08737116.pdf

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