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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..

Dynamic Analysis, Stability and Design of Grid Forming Converters With PI-Based Voltage Control in DC and 3-Phase AC Microgrids (2023)
Journal Article
Navarro-Rodríguez, Á., García, P., Cano, J. M., & Sumner, M. (2023). Dynamic Analysis, Stability and Design of Grid Forming Converters With PI-Based Voltage Control in DC and 3-Phase AC Microgrids. IEEE Transactions on Energy Conversion, 38(4), 2249-2262. https://doi.org/10.1109/TEC.2023.3280977

This paper analyzes the dynamic behavior of the voltage control loop based on proportional-integral regulators, commonly used for grid-forming converters in 3-phase AC and DC Microgrids and applications that involve a DC-link voltage control. The pap... Read More about Dynamic Analysis, Stability and Design of Grid Forming Converters With PI-Based Voltage Control in DC and 3-Phase AC Microgrids.

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.

Multi-dimension SVPWM-based sensorless control of 7-phase PMSM drives (2023)
Journal Article
Saleh, K., & Sumner, M. (2023). Multi-dimension SVPWM-based sensorless control of 7-phase PMSM drives. Bulletin of Electrical Engineering and Informatics, 12(2), 689-703. https://doi.org/10.11591/eei.v12i2.4665

A new control technique for the 7-phase permanent magnet synchronous machine (PMSM) when a failure in the speed sensor is introduced. This will make the whole drive system more robust and at the same time reduce the cost. The speed and the position o... Read More about Multi-dimension SVPWM-based sensorless control of 7-phase PMSM drives.

Distributed predictive secondary control with soft constraints for optimal dispatch in hybrid AC/DC microgrids (2023)
Journal Article
Navas-Fonseca, A., Burgos-Mellado, C., Gómez, J. S., Espina, E., Llanos, J., Śaez, D., Sumner, M., & Olivares, D. E. (2023). Distributed predictive secondary control with soft constraints for optimal dispatch in hybrid AC/DC microgrids. IEEE Transactions on Smart Grid, 14(6), 4204-4218. https://doi.org/10.1109/tsg.2023.3261569

Hybrid AC/DC microgrids (H-MGs) are a prominent solution for integrating distributed generation and modern AC and DC loads. However, controlling these systems is challenging as multiple electrical variables need to be controlled and coordinated. To p... Read More about Distributed predictive secondary control with soft constraints for optimal dispatch in hybrid AC/DC microgrids.

Stochastic Approach to Modelling Emissions of Multiple Power Electronic Converters (2023)
Presentation / Conference Contribution
Ballukja, E., Aitbar, I., Niewiadomski, K., Thomas, D. W., Sumner, M., & Smolenski, R. (2023, January). Stochastic Approach to Modelling Emissions of Multiple Power Electronic Converters. Presented at 2023 IEEE 7th Global Electromagnetic Compatibility Conference (GEMCCON), Nusa Dua, Indonesia

The aim of this paper is to describe the effects of time delays (Δt) between the switching of several converters on the statistical quantification of the common mode current caused by a multiple converters set-up. To this end, the time delays are con... Read More about Stochastic Approach to Modelling Emissions of Multiple Power Electronic Converters.

Fundamental PWM Excitation Based Rotor Position Estimation for a Dual Three-Phase Permanent Magnet Synchronous Machine (2022)
Journal Article
Chen, H., Gao, Q., Yang, T., & Sumner, M. (2023). Fundamental PWM Excitation Based Rotor Position Estimation for a Dual Three-Phase Permanent Magnet Synchronous Machine. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 4(2), 659-668. https://doi.org/10.1109/jestie.2022.3223880

Two rotor position estimation methods for a dual three-phase (DTP) permanent magnet synchronous machine (PMSM) are investigated in this paper, where the rotor position is estimated by exploiting the saliency of the motor through the phase current der... Read More about Fundamental PWM Excitation Based Rotor Position Estimation for a Dual Three-Phase Permanent Magnet Synchronous Machine.

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., Lezynski, P., & 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.

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.

Sensorless Control of a PMSM Drive Post an Open Circuit Failure Based on 3D-SVPWM Technique (2022)
Journal Article
Saleh, K., & Sumner, M. (2022). Sensorless Control of a PMSM Drive Post an Open Circuit Failure Based on 3D-SVPWM Technique. IEEJ Transactions on Electrical and Electronic Engineering, 17(7), 1072-1082. https://doi.org/10.1002/tee.23597

This paper presents a novel technique to maintain the PMSM Drive operation post the failure in one phase and the failure of the speed sensor occur simultaneously. The PMSM motor is driven by a fault-tolerant inverter. The use of the fault-tolerant in... Read More about Sensorless Control of a PMSM Drive Post an Open Circuit Failure Based on 3D-SVPWM Technique.