Dr STEVE GREEDY's Outputs (20)

Analysis of conducted EMI for dual active bridge DC-DC converter in an electric traction application (2024)
Presentation / Conference Contribution
Adhena, H. H., Watson, A. J., Greedy, S., Moonen, N., & Leferink, F. (2024, June). Analysis of conducted EMI for dual active bridge DC-DC converter in an electric traction application. Presented at 13th International Conference on Power Electronics, Machines and Drives (PEMD 2024), Nottingham, UK

Dual active bridge (DAB) converters are commonly used in power conversion applications with switching devices that operate at high frequencies and high switching speeds. There can be current ringing (oscillation) both in the collector of the switchin... Read More about Analysis of conducted EMI for dual active bridge DC-DC converter in an electric traction application.

State of the Art of Near-Field Scanning: Contemporary Standards and Methods (2023)
Presentation / Conference Contribution
Voskresenskyi, S., Aitbar, I., Ballukja, E., Niewiadomski, K., Thomas, D. W., & Greedy, S. (2023, January). State of the Art of Near-Field Scanning: Contemporary Standards and Methods. Presented at 2023 IEEE 7th Global Electromagnetic Compatibility Conference (GEMCCON), Nusa Dua, Indonesia

This paper presents a review of a number of techniques used for near-field scanning and detection of electromagnetic radiation sources. It also gives an overview of standards, related to technical requirements for the devices as well as scanning meth... Read More about State of the Art of Near-Field Scanning: Contemporary Standards and Methods.

Comparison of Great Britain and Ukraine railway systems based on their EMC capability and electrification systems (2023)
Presentation / Conference Contribution
Adhena, H. H., Serdiuk, T., Thomas, D., & Greedy, S. (2023, January). Comparison of Great Britain and Ukraine railway systems based on their EMC capability and electrification systems. Presented at 2023 IEEE 7th Global Electromagnetic Compatibility Conference (GEMCCON), Nusa Dua, Indonesia

In this paper, a comparison based on electromagnetic compatibility capability, electromagnetic interference susceptibility, signalling, and electrification systems of Great Britain and Ukraine's railway systems will be analyzed.

EMI Spectral Aggregation of Modulation Schemes in a lab-based DC Microgrid (2022)
Presentation / Conference Contribution
Pena-Quintal, A., Khilnani, A., Sandrolini, L., Sumner, M., Thomas, D., & Greedy, S. (2022, August). EMI Spectral Aggregation of Modulation Schemes in a lab-based DC Microgrid. Presented at 2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI), Spokane, WA, USA

DC Microgrid research has developed in the recent years following the increasing integration of power electronic based switching devices at the point of common coupling in DC grids. This has led to electromagnetic interference problems caused by the... Read More about EMI Spectral Aggregation of Modulation Schemes in a lab-based DC Microgrid.

High Code Density and Humidity Sensor Chipless RFID Tag (2022)
Presentation / Conference Contribution
Ali, A., Williams, O., Lester, E., & Greedy, S. (2022, July). High Code Density and Humidity Sensor Chipless RFID Tag. Paper presented at 2022 7th International Conference on Smart and Sustainable Technologies, SpliTech 2022, Split / Bol, Croatia

This article presents a low cost, miniaturize, flexible, high code density chipless sensor tag. The tag is designed on polyethylene terephthalate (PET) substrate with a compact size of 1cm radius operating in ultra-wideband, ranging from 3.5 to 16GHz... Read More about High Code Density and Humidity Sensor Chipless RFID Tag.

The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link (2021)
Presentation / Conference Contribution
Pena-Quintal, A., Niewiadomski, K., Muneeswaran, V., Greedy, S., Sumner, M., & Thomas, D. (2021, July). The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link. Presented at 2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium, Virtual

This paper explores the effect of using a Spread Spectrum modulation technique with a Buck Converter on a communication cable coupled at the input voltage. The EMI created by the switching of the power converter generates damped oscillations on the d... Read More about The Effect of Spread Spectrum Modulation for a Buck Converter Coupled with a Single Wired Communication Link.

The Influence of the Number of Frequencies and the Frequency Repetitions Rates in Spread Spectrum Sigma-Delta Modulated DC-DC Converters (2021)
Presentation / Conference Contribution
Pena-Quintal, A., Niewiadomski, K., Greedy, S., Sumner, M., & Thomas, D. (2021, September). The Influence of the Number of Frequencies and the Frequency Repetitions Rates in Spread Spectrum Sigma-Delta Modulated DC-DC Converters. Presented at 2021 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC), Nusa Dua - Bali, Indonesia

This paper explores the impact of using a Spread Spectrum modulation technique based on a Sigma-Delta modulator for a DC-DC SiC-based power converter. A simple block is proposed for the PWM to generate square pulses close to 20 kHz with a controlled... Read More about The Influence of the Number of Frequencies and the Frequency Repetitions Rates in Spread Spectrum Sigma-Delta Modulated DC-DC Converters.

Real-Time Thermal Imaging Using Augmented Reality and Accelerated 3D Models (2020)
Presentation / Conference Contribution
Jalal, B., Greedy, S., & Evans, P. (2020, November). Real-Time Thermal Imaging Using Augmented Reality and Accelerated 3D Models. Presented at 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), Aalborg, Denmark

We present an innovative method to allow real-time visualisation of temperature fields on power electronic circuits using augmented reality. A real-time time-domain simulation incorporating the Block Arnoldi model order reduction techniques is implem... Read More about Real-Time Thermal Imaging Using Augmented Reality and Accelerated 3D Models.

An Open Source, FPGA-Based Bit Error Ratio Tester for Serial Communications (2020)
Presentation / Conference Contribution
Basford, M. J., Pena-Quintal, A. E., Greedy, S., Sumner, M., & Thomas, D. W. P. (2020, September). An Open Source, FPGA-Based Bit Error Ratio Tester for Serial Communications. Presented at 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, Rome, Italy

This paper discusses the design of a FPGA-based Bit Error Ratio (BER) measurement system in a serial communication link under electromagnetic emissions. The BER measurement is an important figure for the reliability of digital communication systems.... Read More about An Open Source, FPGA-Based Bit Error Ratio Tester for Serial Communications.

Data Links Modelling under Radiated EMI and its Impact on Sampling Errors in the Physical Layer (2020)
Presentation / Conference Contribution
Pena-Quintal, A. E., Basford, M. J., Niewiadomski, K., Greedy, S., Sumner, M., & Thomas, D. W. P. (2020, September). Data Links Modelling under Radiated EMI and its Impact on Sampling Errors in the Physical Layer. Presented at 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, Rome, Italy

This paper deals with the effects of radiated EMI on serial communication links using software modelling with particular emphasis on the physical layer. The effect of EMI in data links is an important problem to solve in many harsh environments such... Read More about Data Links Modelling under Radiated EMI and its Impact on Sampling Errors in the Physical Layer.

A Passive RFID Tag For Biomass Tracking (2020)
Presentation / Conference Contribution
Ali, A., Mackenzie, R., Lester, E., Williams, O., & Greedy, S. (2020, March). A Passive RFID Tag For Biomass Tracking. Presented at 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark

© 2020 EurAAP. This paper presents the design for a low cost miniaturized chipless RFID tag for short-range biomass tracking and monitoring purposes. The concentric hexagonal geometry and angular stability, leading to higher data capacity are the nov... Read More about A Passive RFID Tag For Biomass Tracking.

The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites (2019)
Presentation / Conference Contribution
Munalli, D., Dimitrakis, G., Chronopoulos, D., Greedy, S., & Long, A. (2019, November). The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites. Presented at 11th Symposium on NDT in Aerospace, Paris, France

Microwave non-destructive testing (MNDT) methods represent an effective solution in detecting defects within composite structures with relatively low electrical conductivity. They offer the advantage to overcome the problems of traditional NDT techni... Read More about The use of free-space microwave non-destructive techniques: simulation of damage detection in carbon fibre reinforced composites.

Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study (2018)
Presentation / Conference Contribution
Munalli, D., Chronopoulos, D., & Greedy, S. Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study. Presented at 9th European Workshop on Structural Health Monitoring

The use of Low power Radio Frequency (RF) based techniques as Non Destructive Testing (NDT) methods offers a potential solution for detecting defects and anomalies occurring in the structural integrity of composite based structures in real time, enab... Read More about Electromagnetic shielding effectiveness of fiber-reinforced composites: a preliminary study.

EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation (2017)
Presentation / Conference Contribution
Smartt, C., Basford, M., Greedy, S., Thomas, D., & Sumner, M. (2017, September). EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation. Presented at 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), Verona, Italy

This paper describes the development and application of sophisticated multi-conductor cable bundle models for Spice simulation. The cable models developed include frequency dependent parameters, transfer impedance coupling and incident plane wave exc... Read More about EMC-oriented multi-conductor equivalent circuit cable models for spice, including transfer impedance coupling and incident field excitation.

Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system (2016)
Presentation / Conference Contribution
Nothofer, A., Tarisciotti, L., Zhou, Q., Benson, T. M., Greedy, S., & Christopoulos, C. (2016, September). Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system. Presented at EMC Europe 2016

In this paper a high frequency model of the Electrical Nacelle Anti-Ice (ENAI) system is described for a typical aircraft application. The ENAI system, usually modelled only at the normal operating frequency, is modified in order to include a detaile... Read More about Analysis of conducted emissions from an Electric Nacelle Anti-Ice power control system.

Time domain measurement of near field emissions from complex PCBs (2016)
Presentation / Conference Contribution
Thomas, D., Greedy, S., Smartt, C., Nasser, H., Baharuddin, M., Gradoni, G., Creagh, S., & Tanner, G. (2016, October). Time domain measurement of near field emissions from complex PCBs. Presented at 46th European Microwave Conference, London, UK

This paper discusses how the measurements of the near-field emissions in the time domain can be used to characterize the broadband emissions from complex sources such as multifunctional Printed Circuit Boards (PCBs). The near- fields, transverse to t... Read More about Time domain measurement of near field emissions from complex PCBs.

Conducted emission evaluation for direct matrix converters (2016)
Presentation / Conference Contribution
Nothofer, A., Tarisciotti, L., Greedy, S., Empringham, L., De Lillo, L., & Degano, M. Conducted emission evaluation for direct matrix converters. Presented at 2016 ESA Workshop on Aerospace EMC

Matrix converters have been recently proposed as an alternative solution to the standard back-to-back converter in aerospace applications. However, Electromagnetic Interference (EMI), in particular, conducted emissions represent a critical aspect for... Read More about Conducted emission evaluation for direct matrix converters.

Open source cable models for EMI simulations (2016)
Presentation / Conference Contribution
Greedy, S., Smartt, C., & Thomas, D. W. (2016, May). Open source cable models for EMI simulations. Presented at 2016 ESA Workshop on Aerospace EMC, Valencia, Spain

This paper describes the progress of work towards an Open Source software toolset suitable for developing Spice based multi-conductor cable models. The issues related to creating a transmission line model for implementation in Spice which include the... Read More about Open source cable models for EMI simulations.

Characterisation of radiated fields from PCBs in the time domain (2015)
Presentation / Conference Contribution
Thomas, D., Smartt, C., & Greedy, S. (2015, August). Characterisation of radiated fields from PCBs in the time domain. Presented at 2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), Dresden, Germany

In this paper, a method for representing electromagnetic emissions from a printed circuit board (PCB) using an equivalent dipole model deduced from time domain near-field scanning magnetic field measurements is proposed. The basic idea is to replace... Read More about Characterisation of radiated fields from PCBs in the time domain.

Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas
Presentation / Conference Contribution
Maricar, M. I., Gradoni, G., Greedy, S., Ivrlac, M. T., Nossek, J. A., Phang, S., Creagh, S. C., Tanner, G., & Thomas, D. W. Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas. Presented at 2016 ESA Workshop on Aerospace EMC

Understanding the impact of interference upon the performance of a multiple input multiple output (MIMO) based device is of paramount importance in ensuring a design is both resilient and robust. In this work the effect of element-element interferenc... Read More about Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas.