All Outputs (18)

Optimal Design of Single-Layer and Multi-Layer Air-Core Inductors Considering Uncertainty Factors (2023)
Journal Article
Wan, L., Khilnani, A. D., Wu, X., Liu, X., Pignari, S. A., Thomas, D. W., …Grassi, F. (2023). Optimal Design of Single-Layer and Multi-Layer Air-Core Inductors Considering Uncertainty Factors. IEEE Access, 11, 134460 -134472. https://doi.org/10.1109/access.2023.3336572

Air-core inductors are key components in power converters and measurement equipment. To optimally design inductors, their self-resonant frequency (SRF) as a result of inherent stray capacitance should be accurately estimated. This paper presents opti... Read More about Optimal Design of Single-Layer and Multi-Layer Air-Core Inductors Considering Uncertainty Factors.

The Effect of Spread Spectrum Modulation on Power Line Communications (2023)
Journal Article
Ustun Ercan, S., Pena-Quintal, A., & Thomas, D. (2023). The Effect of Spread Spectrum Modulation on Power Line Communications. Energies, 16(13), Article 5197. https://doi.org/10.3390/en16135197

Interference in Power Line Communication (PLC) is examined in this paper. PLC is a wired communication technology that provides communication and data transmission over the existing electrical network. It uses the electrical wiring in buildings or th... Read More about The Effect of Spread Spectrum Modulation on Power Line Communications.

An investigation into the robustness of a double-ended wideband impedance-based fault location technique. (2023)
Journal Article
Jahanger, H. K., Thomas, D. W. P., & Sumner, M. (2023). An investigation into the robustness of a double-ended wideband impedance-based fault location technique. Scientific Reports, 13(1), Article 10001. https://doi.org/10.1038/s41598-023-36541-2

The double-ended impedance-based fault location technique (DEFLT) uses the wideband frequency content of the transient generated by the fault to determine the impedance from the point of measurement to the fault. This paper evaluates and develops the... Read More about An investigation into the robustness of a double-ended wideband impedance-based fault location technique..

On Spread Spectrum for DC Grids: Low-Frequency Conducted EMI Mitigation and Signal Integrity Disruption in Serial Communication Links (2023)
Journal Article
Pena-Quintal, A., Sayed, W. E., Sumner, M., Ercan, S. U., Greedy, S., Thomas, D., & Smolenski, R. (2023). On Spread Spectrum for DC Grids: Low-Frequency Conducted EMI Mitigation and Signal Integrity Disruption in Serial Communication Links. IEEE Transactions on Electromagnetic Compatibility, 65(4), 1027-1036. https://doi.org/10.1109/TEMC.2023.3273111

This article addresses the effects on nearby communication systems when spread spectrum modulation techniques are used for a dc-dc power converter. These interactions can be found in modern smart grids and automotive power networks in which the combi... Read More about On Spread Spectrum for DC Grids: Low-Frequency Conducted EMI Mitigation and Signal Integrity Disruption in Serial Communication Links.

Impact of Pseudo-Random Modulation on Measured Conducted EMI (2022)
Journal Article
Pena-Quintal, A., Loschi, H., Smolenski, R., Sumner, M., Thomas, D., Greedy, S., …Leferink, F. (2022). Impact of Pseudo-Random Modulation on Measured Conducted EMI. IEEE Electromagnetic Compatibility Magazine, 11(2), 84-92. https://doi.org/10.1109/memc.2022.9873829

This paper demonstrates that using conventional frequency scanning methods for the evaluation of conducted electromagnetic interference generated by DC/DC converters can give misleading results when pseudo-random modulation is used as part of the con... Read More about Impact of Pseudo-Random Modulation on Measured Conducted EMI.

Performance Assessment of an Energy Management System for a Home Microgrid with PV Generation (2020)
Journal Article
Elkazaz, M., Sumner, M., Pholboon, S., Davies, R., & Thomas, D. (2020). Performance Assessment of an Energy Management System for a Home Microgrid with PV Generation. Energies, 13(13), https://doi.org/10.3390/en13133436

Home energy management systems (HEMS) are a key technology for managing future electricity distribution systems as they can shift household electricity usage away from peak consumption times and can reduce the amount of local generation penetrating i... Read More about Performance Assessment of an Energy Management System for a Home Microgrid with PV Generation.

A Fault Location Scheme for Active Untransposed Distribution Systems Using a Limited Number of Synchronized Measurements (2020)
Journal Article
Aboshady, F., Thomas, D., & Sumner, M. (2020). A Fault Location Scheme for Active Untransposed Distribution Systems Using a Limited Number of Synchronized Measurements. Electric Power Components and Systems, 48(1-2), 1-11. https://doi.org/10.1080/15325008.2020.1731880

This paper presents a fault location scheme for unbalanced and untransposed distribution systems which contain different types of distributed generation (DG). A general formula has been derived for any fault type using a limited number of synchronize... Read More about A Fault Location Scheme for Active Untransposed Distribution Systems Using a Limited Number of Synchronized Measurements.

Measurement of Near-Field Electromagnetic Emissions and Characterization Based on Equivalent Dipole Model in Time-Domain (2019)
Journal Article
Zhao, Y., Baharuddin, M. H., Smartt, C., Zhao, X., Yan, L., Liu, C., & Thomas, D. W. P. (2020). Measurement of Near-Field Electromagnetic Emissions and Characterization Based on Equivalent Dipole Model in Time-Domain. IEEE Transactions on Electromagnetic Compatibility, 62(4), 1237-1246. https://doi.org/10.1109/temc.2019.2945560

In this article, a method for representing electromagnetic emissions from a device under test (DUT) using an equivalent time dependent dipole array model deduced from the time-domain near-field scanned tangential magnetic fields is proposed. First, a... Read More about Measurement of Near-Field Electromagnetic Emissions and Characterization Based on Equivalent Dipole Model in Time-Domain.

A Wideband Single End Fault Location Scheme for Active Untransposed Distribution Systems (2019)
Journal Article
Aboshady, F., Thomas, D., & Sumner, M. (2020). A Wideband Single End Fault Location Scheme for Active Untransposed Distribution Systems. IEEE Transactions on Smart Grid, 11(3), 2115 - 2124. https://doi.org/10.1109/TSG.2019.2947870

This paper presents a single end fault location scheme for distribution networks with distributed generation (DG). The high frequency transients generated when a fault occurs are used to locate the fault point. An equivalent circuit at high frequenci... Read More about A Wideband Single End Fault Location Scheme for Active Untransposed Distribution Systems.

A novel method for EMI evaluation in random modulated power electronic converters (2019)
Journal Article
Lezynski, P., Smolenski, R., Loschi, H., Thomas, D., & Moonen, N. (2020). A novel method for EMI evaluation in random modulated power electronic converters. Measurement, 151, Article 107098. https://doi.org/10.1016/j.measurement.2019.107098

However, the theoretical analyses as well as experimental results have indicated that ostensible reduction of the EMI level generated by random modulated converters results from the methodology of the EMI spectrum measurement, adopted in currently bi... Read More about A novel method for EMI evaluation in random modulated power electronic converters.

Energy management system for hybrid PV-wind-battery microgrid using convex programming, model predictive and rolling horizon predictive control with experimental validation (2019)
Journal Article
Elkazaz, M., Sumner, M., & Thomas, D. (2020). Energy management system for hybrid PV-wind-battery microgrid using convex programming, model predictive and rolling horizon predictive control with experimental validation. International Journal of Electrical Power and Energy Systems, 115, Article 105483. https://doi.org/10.1016/j.ijepes.2019.105483

The integration of energy storage technologies with renewable energy systems can significantly reduce the operating costs for microgrids (MG) in future electricity networks. This paper presents a novel energy management system (EMS) which can minimiz... Read More about Energy management system for hybrid PV-wind-battery microgrid using convex programming, model predictive and rolling horizon predictive control with experimental validation.

Real-Time Energy Management for a Small Scale PV-Battery Microgrid: Modeling, Design, and Experimental Verification (2019)
Journal Article
Elkazaz, M., Sumner, M., & Thomas, D. (2019). Real-Time Energy Management for a Small Scale PV-Battery Microgrid: Modeling, Design, and Experimental Verification. Energies, 12(14), 1-16. https://doi.org/10.3390/en12142712

A new energy management system (EMS) is presented for small scale microgrids (MGs). The proposed EMS focuses on minimizing the daily cost of the energy drawn by the MG from the main electrical grid and increasing the self-consumption of local renewab... Read More about Real-Time Energy Management for a Small Scale PV-Battery Microgrid: Modeling, Design, and Experimental Verification.

Transient high-frequency impedance comparison-based protection for flexible DC distribution systems (2019)
Journal Article
Jia, K., Xuan, Z., Feng, T., Wang, C., Bi, T., & Thomas, D. W. (2020). Transient high-frequency impedance comparison-based protection for flexible DC distribution systems. IEEE Transactions on Smart Grid, 11(1), 323-333. https://doi.org/10.1109/tsg.2019.2921387

Flexible direct current (DC) distribution systems have emerged as the development trend for future distribution grids. However, these systems are vulnerable to DC faults, rapid fault identification and faulted line selection method are required to en... Read More about Transient high-frequency impedance comparison-based protection for flexible DC distribution systems.

Sparse Voltage Measurement-Based Fault Location Using Intelligent Electronic Devices (2019)
Journal Article
Jia, K., Yang, B., Dong, X., Feng, T., Bi, T., & Thomas, D. (2020). Sparse Voltage Measurement-Based Fault Location Using Intelligent Electronic Devices. IEEE Transactions on Smart Grid, 11(1), 48-60. https://doi.org/10.1109/tsg.2019.2916819

This paper proposes a fault-section location method based on sparse measurements, aimed at asymmetrical faults. A virtual current vector is defined to indicate the faulted section, which is sufficiently sparse except that the fault position correspon... Read More about Sparse Voltage Measurement-Based Fault Location Using Intelligent Electronic Devices.

An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar gunn diode oscillator (2018)
Journal Article
Cumming, D. R., Thomas, D., Maricar, M. I., Khalid, A., Dunn, G., Greedy, S., …Oxley, C. H. (2018). An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar gunn diode oscillator. Microwave and Optical Technology Letters, 60(9), 2144-2148. https://doi.org/10.1002/mop.31312

© 2018 Wiley Periodicals, Inc. The planar Gunn diode offers the potential of microwave, milli-metric and THz-based oscillators, which can be fabricated as part of a microwave monolithic integrated circuit (mmic). The paper develops an electrical repr... Read More about An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar gunn diode oscillator.

Wigner-Function-Based Propagation of Stochastic Field Emissions from Planar Electromagnetic Sources (2017)
Journal Article
Gradoni, G., Arnault, L. R., Creagh, S. C., Tanner, G., Baharuddin, M. H., Smartt, C., & Thomas, D. W. (2018). Wigner-Function-Based Propagation of Stochastic Field Emissions from Planar Electromagnetic Sources. IEEE Transactions on Electromagnetic Compatibility, 60(3), 580-588. https://doi.org/10.1109/TEMC.2017.2738329

© 1964-2012 IEEE. Modeling the electromagnetic radiation from modern digital systems - acting effectively as extended stochastic sources as part of a complex architecture - is a challenging task. We follow an approach here based on measuring and prop... Read More about Wigner-Function-Based Propagation of Stochastic Field Emissions from Planar Electromagnetic Sources.

An improved soil ionization representation to numerical simulation of impulsive grounding systems (2017)
Journal Article
Gazzana, D. S., Tronchoni, A. B., Leborgne, R. C., Bretas, A. S., Thomas, D. W. P., & Christopoulos, C. (2018). An improved soil ionization representation to numerical simulation of impulsive grounding systems. IEEE Transactions on Magnetics, 54(3), https://doi.org/10.1109/TMAG.2017.2750019

This paper presents a hybrid method based on the transmission line modeling method (TLM) aiming to represent the soil ionization effect for grounding systems simulation. This natural phenomenon can be better represented by taking into account the var... Read More about An improved soil ionization representation to numerical simulation of impulsive grounding systems.

Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters (2014)
Journal Article
Sumner, M., Abusorrah, A., Thomas, D. W., & Zanchetta, P. (2014). Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters. IEEE Transactions on Smart Grid, 5(4), https://doi.org/10.1109/TSG.2014.2298495

This paper presents a method to identify power system impedance in real-time using signals obtained from grid- connected power electronic converters. The proposed impedance estimation has potential applications in renewable/distributed energy systems... Read More about Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters.