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Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden (2024)
Journal Article
Kadhum, H., Watson, A. J., Rivera, M., Zanchetta, P., & Wheeler, P. (2024). Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden. Energies, 17(11), Article 2519. https://doi.org/10.3390/en17112519

Recent advances in high-power applications employing voltage source converters have been primarily fuelled by the emergence of the modular multilevel converter (MMC) and its derivatives. Model predictive control (MPC) has emerged as an effective way... Read More about Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden.

Design and Analysis of Reconfigurable Resonant Converter with Ultra Wide Output Voltage Range (2024)
Journal Article
Qazi, S., Venugopal, P., Watson, A. J., Wheeler, P., & Soeiro, T. B. (2024). Design and Analysis of Reconfigurable Resonant Converter with Ultra Wide Output Voltage Range. IEEE Transactions on Power Electronics, 39(5), 5750-5763. https://doi.org/10.1109/tpel.2024.3365391

In this article, a reconfigurable isolated dc/dc converter is proposed suitable for a wide output voltage range of 180–1500 V for efficient onshore charging in maritime applications. The proposed circuit concept can also fulfill the requirements of o... Read More about Design and Analysis of Reconfigurable Resonant Converter with Ultra Wide Output Voltage Range.

A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges (2023)
Journal Article
Koohi, P., Watson, A. J., Clare, J. C., Batista Soeiro, T., & Wheeler, P. W. (2023). A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges. Energies, 16(16), Article 5927. https://doi.org/10.3390/en16165927

Multi-port DC-DC converters are a promising solution for a wide range of applications involving multiple DC sources, storage elements, and loads. Multi-active bridge (MAB) converters have attracted the interest of researchers over the past two decade... Read More about A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges.

Powering Maritime: Challenges and prospects in ship electrification (2023)
Journal Article
Qazi, S., Venugopal, P., Rietveld, G., Soeiro, T. B., Shipurkar, U., Grasman, A., …Wheeler, P. (2023). Powering Maritime: Challenges and prospects in ship electrification. IEEE Electrification Magazine, 11(2), 74-87. https://doi.org/10.1109/mele.2023.3264926

The exponential increase in Global greenhouse gas (GHG) emissions and the rapid depletion of fossil fuels over the past few decades have swayed the transportation sector toward becoming more electric. In the last decade, with continuous improvements... Read More about Powering Maritime: Challenges and prospects in ship electrification.

A Class-E-Based Multichannel Auxiliary Power Supply with Individual Hysteresis Control (2023)
Journal Article
Li, Y., Watson, A. J., & Kaya, M. (2023). A Class-E-Based Multichannel Auxiliary Power Supply with Individual Hysteresis Control. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(3), 3335-3347. https://doi.org/10.1109/jestpe.2023.3264107

A high performance auxiliary power supply (APS) with multiple isolated outputs plays a crucial role in ensuring the effective operation of power converter systems. An isolated resonant current source converter is usually adopted as the APS in medium-... Read More about A Class-E-Based Multichannel Auxiliary Power Supply with Individual Hysteresis Control.

Reinforcement Learning-Based Method to Exploit Vulnerabilities of False Data Injection Attack Detectors in Modular Multilevel Converters (2023)
Journal Article
Burgos-Mellado, C., Zuñiga-Bauerle, C., Muñoz-Carpintero, D., Arias-Esquivel, Y., Càrdenas-Dobson, R., Dragičević, T., …Watson, A. (2023). Reinforcement Learning-Based Method to Exploit Vulnerabilities of False Data Injection Attack Detectors in Modular Multilevel Converters. IEEE Transactions on Power Electronics, 38(7), 8907-8921. https://doi.org/10.1109/TPEL.2023.3263728

Implementing control schemes for modular multilevel converters (M2Cs) involves both a cyber and a physical level, leading to a cyber-physical system (CPS). At the cyber level, a communication network enables the data exchange between sensors, control... Read More about Reinforcement Learning-Based Method to Exploit Vulnerabilities of False Data Injection Attack Detectors in Modular Multilevel Converters.

A Comprehensive Review of Machine-Integrated Electric Vehicle Chargers (2022)
Journal Article
Mustafa, U., Ahmed, R., Watson, A., Wheeler, P., Ahmed, N., & Dahele, P. (2023). A Comprehensive Review of Machine-Integrated Electric Vehicle Chargers. Energies, 16(1), Article 129. https://doi.org/10.3390/en16010129

Electric Vehicles are becoming increasingly popular due to their environment friendly operation. As the demand for electric vehicles increases, it has become quite important to explore their charging strategies. Since charging and traction do not nor... Read More about A Comprehensive Review of Machine-Integrated Electric Vehicle Chargers.

A Switched Mid-Point Modular Multilevel Converter for HVDC Applications (2022)
Journal Article
Hassan, Z., Watson, A. J., Tardelli, F., & Clare, J. (2023). A Switched Mid-Point Modular Multilevel Converter for HVDC Applications. IEEE Transactions on Power Delivery, 38(3), 1534-1547. https://doi.org/10.1109/tpwrd.2022.3217715

The modular multilevel converter (MMC) has emerged as the industry standard for voltage source converters (VSC) based high voltage direct-current (HVDC) applications since its benefits of scalability, modularity, high efficiency and better output qua... Read More about A Switched Mid-Point Modular Multilevel Converter for HVDC Applications.

FEA Based Transformer Loss Analysis for Dual Active Bridge DC-DC Converter using Triple Phase Shift Modulation (2022)
Journal Article
Akbar, S. M., Hasan, A., Watson, A. J., & Wheeler, P. (2022). FEA Based Transformer Loss Analysis for Dual Active Bridge DC-DC Converter using Triple Phase Shift Modulation. IEEE Journal of Emerging and Selected Topics in Power Electronics, 10(4), 4347-4360. https://doi.org/10.1109/JESTPE.2022.3148355

High frequency transformers are a key component of dual active bridge (DAB) dc-dc converters, providing isolation and voltage scaling. The losses in the transformer should be minimized to improve efficiency and extend lifetime. The existing research... Read More about FEA Based Transformer Loss Analysis for Dual Active Bridge DC-DC Converter using Triple Phase Shift Modulation.

Model Predictive Control with Triple Phase Shift Modulation for a Dual Active Bridge DC-DC Converter (2021)
Journal Article
Akbar, S. M., Hasan, A., Watson, A. J., & Wheeler, P. (2021). Model Predictive Control with Triple Phase Shift Modulation for a Dual Active Bridge DC-DC Converter. IEEE Access, 9, 98603-98614. https://doi.org/10.1109/ACCESS.2021.3095553

A fast dynamic response is one of the key demands for the dual active bridge (DAB) dc-dc converter to achieve a well-regulated output voltage over a wide range of operating conditions. Recently, model predictive control (MPC) has become a promising a... Read More about Model Predictive Control with Triple Phase Shift Modulation for a Dual Active Bridge DC-DC Converter.

Single-phase consensus-based control for regulating voltage and sharing unbalanced currents in 3-wire isolated AC microgrids (2020)
Journal Article
Burgos-Mellado, C., Llanos, J., Espina, E., Saez, D., Cardenas, R., Sumner, M., & Watson, A. (2020). Single-phase consensus-based control for regulating voltage and sharing unbalanced currents in 3-wire isolated AC microgrids. IEEE Access, 8, 164882-164898. https://doi.org/10.1109/ACCESS.2020.3022488

A distributed control strategy is proposed to share unbalanced currents in three-phase threewire isolated AC Microgrids (MGs). It is based on a novel approach where, rather than analysing the MG as a three-phase system, it is analysed as three single... Read More about Single-phase consensus-based control for regulating voltage and sharing unbalanced currents in 3-wire isolated AC microgrids.

Asymmetrical Triangular Current Mode (ATCM) for Bidirectional High Step Ratio Modular Multilevel Dc–Dc Converter (2019)
Journal Article
Pineda, C., Pereda, J., Rojas, F., Cerda, C., Zhang, X., & J. Watson, A. (2020). Asymmetrical Triangular Current Mode (ATCM) for Bidirectional High Step Ratio Modular Multilevel Dc–Dc Converter. IEEE Transactions on Power Electronics, 35(7), 6906-6915. https://doi.org/10.1109/tpel.2019.2957951

Direct current (Dc) networks have proven advantages in high voltage direct current (HVDC) transmission systems, and now they are expanding to medium- and low-voltage distribution networks. One of the major challenges is to develop reliable dc-dc volt... Read More about Asymmetrical Triangular Current Mode (ATCM) for Bidirectional High Step Ratio Modular Multilevel Dc–Dc Converter.

A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors (2019)
Journal Article
Li, Z., Wheeler, P., Watson, A., Costabeber, A., Wang, B., Ren, Y., …Ma, H. (2020). A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors. IEEE Transactions on Power Electronics, 35(5), 5267-5278. https://doi.org/10.1109/tpel.2019.2946692

© 1986-2012 IEEE. This article considers fault detection in the case of a three-phase three-wire (3P3W) inverter, when only two current sensors are used to save cost or due to a faulty current sensor. With two current sensors, there is no current met... Read More about A Fast Diagnosis Method for Both IGBT Faults and Current Sensor Faults in Grid-Tied Three-Phase Inverters With Two Current Sensors.

Hybrid HVDC circuit breaker with self-powered gate drives (2016)
Journal Article
Effah, F. B., Watson, A. J., Ji, C., Amankwah, E. K., Johnson, C. M., Davidson, C., & Clare, J. C. (2016). Hybrid HVDC circuit breaker with self-powered gate drives. IET Power Electronics, 9(2), 228-236. https://doi.org/10.1049/iet-pel.2015.0531

The ever increasing electric power demand and the advent of renewable energy sources have revived the interest in high-voltage direct current (HVDC) multi-terminal networks. However, the absence of a suitable circuit breaker or fault tolerant VSC st... Read More about Hybrid HVDC circuit breaker with self-powered gate drives.

The pharmacokinetics and toxicity of morning vs. evening tobramycin dosing for pulmonary exacerbations of cystic fibrosis: A randomised comparison (2015)
Journal Article
Smyth, A., Knox, A., Prayle, A., Jain, K., Touw, D., Koch, B., …Smyth, A. R. (2016). The pharmacokinetics and toxicity of morning vs. evening tobramycin dosing for pulmonary exacerbations of cystic fibrosis: A randomised comparison. Journal of Cystic Fibrosis, 15(4), 510-517. https://doi.org/10.1016/j.jcf.2015.07.012

Background: Circadian variation in renal toxicity of aminoglycosides has been demonstrated in animal and human studies. People with CF are frequently prescribed aminoglycosides. Altered pharmacokinetics of aminoglycosides are predictive of toxicity.... Read More about The pharmacokinetics and toxicity of morning vs. evening tobramycin dosing for pulmonary exacerbations of cystic fibrosis: A randomised comparison.

Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter (2015)
Journal Article
Shao, S., Watson, A. J., Clare, J. C., & Wheeler, P. (2016). Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter. IEEE Transactions on Power Electronics, 31(5), 3794-3805. https://doi.org/10.1109/TPEL.2015.2462717

This paper presents a fault detection and isolation (FDI) method for open-circuit faults of power semiconductor devices in a modular multilevel converter (MMC). The proposed FDI method is simple with only one sliding mode observer (SMO) equation and... Read More about Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter.

DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter (2014)
Journal Article
Feldman, R., Farr, E., Watson, A. J., Clare, J. C., & Wheeler, P. (2014). DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter. IET Generation, Transmission and Distribution, 8(1), https://doi.org/10.1049/iet-gtd.2012.0713

HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is exp... Read More about DC fault ride-through capability and STATCOM operation of a HVDC hybrid voltage source converter.

Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom (2012)
Journal Article
Townsend, C. D., Summers, T. J., Vodden, J. A., Watson, A. J., Betz, R. E., & Clare, J. C. (2013). Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom. IEEE Transactions on Power Electronics, 28(7), https://doi.org/10.1109/TPEL.2012.2219593

This paper further develops a Model Predictive Control (MPC) scheme which is able to exploit the large number of redundant switching states available in a multi-level H-bridge StatCom (H-StatCom). The new sections of the scheme provide optimised meth... Read More about Optimization of switching losses and capacitor voltage ripple using model predictive control of a cascaded H-bridge multi-level StatCom.