All Outputs (40)

A hierarchical two-stage energy management for a home microgrid using model predictive and real-time controllers (2020)
Journal Article
Elkazaz, M., Sumner, M., Naghiyev, E., Pholboon, S., Davies, R., & Thomas, D. (2020). A hierarchical two-stage energy management for a home microgrid using model predictive and real-time controllers. Applied Energy, 269, Article 115118. https://doi.org/10.1016/j.apenergy.2020.115118

This paper presents a hierarchical two-layer home energy management system to reduce daily household energy costs and maximize photovoltaic self-consumption. The upper layer comprises a model predictive controller which optimizes household energy usa... Read More about A hierarchical two-stage energy management for a home microgrid using model predictive and real-time controllers.

Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems (2020)
Journal Article
Georgious, R., Garcia, J., Sumner, M., Saeed, S., & Garcia, P. (2020). Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems. Energies, 13(1), Article 257. https://doi.org/10.3390/en13010257

This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids. The hybrid system is formed by a lithium-ion battery bank and a supercapacitor module, both co... Read More about Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems.

Hierarchical Energy Management System for Microgrid Operation Based on Robust Model Predictive Control (2019)
Journal Article
Núñez, A., Marín, L. G., Sáez, D., Sumner, M., Pholboon, S., Muñoz-Carpintero, D., & Köbrich, D. (2019). Hierarchical Energy Management System for Microgrid Operation Based on Robust Model Predictive Control. Energies, 12(23), Article 4453. https://doi.org/10.3390/en12234453

© 2019 by the authors. This paper presents a two-level hierarchical energy management system (EMS) for microgrid operation that is based on a robust model predictive control (MPC) strategy. This EMS focuses on minimizing the cost of the energy drawn... Read More about Hierarchical Energy Management System for Microgrid Operation Based on Robust Model Predictive Control.

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.

A New Single End Wideband Impedance Based Fault Location Scheme for Distribution Systems (2019)
Journal Article
Aboshady, F. M., Thomas, D. W. P., & Sumner, M. (2019). A New Single End Wideband Impedance Based Fault Location Scheme for Distribution Systems. Electric Power Systems Research, 173, 263-270. https://doi.org/10.1016/j.epsr.2019.04.034

This paper proposes an improved impedance based fault location scheme based on system analysis at non-fundamental frequencies. The fault is treated as a voltage source that injects high frequency components into the system and the analysis is carried... Read More about A New Single End Wideband Impedance Based Fault Location Scheme for Distribution Systems.

Influence of inverter-interfaced renewable energy generators on directional relay and an improved scheme (2019)
Journal Article
Jia, K., Zhe, Y., Fang, Y., Bi, T., & Sumner, M. (2019). Influence of inverter-interfaced renewable energy generators on directional relay and an improved scheme. IEEE Transactions on Power Electronics, 34(12), 11843-11855. https://doi.org/10.1109/tpel.2019.2904715

Renewable energy sources (RESs) are typically interfaced to the grid using power electronics which can cause their fault current characteristics to display significant low frequency harmonics and unbalanced sequence impedances. Such current character... Read More about Influence of inverter-interfaced renewable energy generators on directional relay and an improved scheme.

Sizing guidelines for grid-connected decentralised energy storage systems: single house application (2019)
Journal Article
Panagiotou, K., Klumpner, C., & Sumner, M. (2019). Sizing guidelines for grid-connected decentralised energy storage systems: single house application. Journal of Engineering, 2019(17), 3802-3806. https://doi.org/10.1049/joe.2018.8155

Nowadays, the existing hierarchical, centrally controlled power grid faces new challenges due to the increase penetration of renewable sources, the need of implementing demand-side management and the 2020 and 2050 environmental targets. A promising c... Read More about Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

Sensorless Control of a Fault-tolerant Multi-level PMSM Drive (2018)
Journal Article
Saleh, K., & Sumner, M. (2018). Sensorless Control of a Fault-tolerant Multi-level PMSM Drive. TELKOMNIKA (Telecommunication, Computing, Electronics and Control), 16(6), 2930-2942

This paper presents a new technique to track the saliency position in a permanent magnet synchronous motor (PMSM) post a single phase open-circuit fault. The PMSM is driven by a fault-tolerant multi-level inverter that is utilized to implement a faul... Read More about Sensorless Control of a Fault-tolerant Multi-level PMSM Drive.

Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions (2018)
Journal Article
Blanco, C., Garcia, P., Navarro-Rodríguez, Á., & Sumner, M. (2018). Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions. IEEE Transactions on Industry Applications, 54(5), 5306-5317. https://doi.org/10.1109/TIA.2018.2846552

This paper proposes a novel frequency-based predictive sequence estimator that allows for the isolation of voltages and currents harmonic components needed for the control of grid-tied converters. The proposed method relays on an enhanced Sliding Goe... Read More about Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions.

An enhanced hybrid switching-frequency modulation strategy for fuel cell vehicle three-level DC-DC converters with quasi-Z source (2018)
Journal Article
Zhang, Y., Shi, J., Fu, C., Zhang, W., Wang, P., Li, J., & Sumner, M. (2018). An enhanced hybrid switching-frequency modulation strategy for fuel cell vehicle three-level DC-DC converters with quasi-Z source. Energies, 11(5), 1-16. https://doi.org/10.3390/en11051026

For fuel cell vehicles, the fuel cell stack has a soft output characteristic whereby the output voltage drops quickly with the increasing output current. In order to interface the dynamic low voltage of the fuel cell stack with the required constant... Read More about An enhanced hybrid switching-frequency modulation strategy for fuel cell vehicle three-level DC-DC converters with quasi-Z source.

Observer-based pulsed signal injection for grid impedance estimation in three phase systems (2018)
Journal Article
Garcia, P., Sumner, M., Navarro-Rodríguez, Á., Guerrero, J. M., & Garcia, J. (in press). Observer-based pulsed signal injection for grid impedance estimation in three phase systems. IEEE Transactions on Industrial Electronics, https://doi.org/10.1109/TIE.2018.2801784

This paper addresses the estimation of the grid impedance and the control of grid-tied converters by combining pulsed-signal injection and observer based techniques. A Luenberger based observer is used for controlling the grid-side current of an LCL... Read More about Observer-based pulsed signal injection for grid impedance estimation in three phase systems.

A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources (2018)
Journal Article
Zhang, Y., Gao, Y., Zhou, L., & Sumner, M. (in press). A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources. IEEE Transactions on Power Electronics, PP(99), https://doi.org/10.1109/TPEL.2017.2788436

A switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed for electric vehicles (EVs) with a hybrid energy source system (HESS). The converter presented has the advantages of being a simple circuit, a r... Read More about A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources.

Single-Switch, Wide Voltage-Gain Range, Boost DC–DC Converter for Fuel Cell Vehicles (2017)
Journal Article
Zhang, Y., Zhou, L., Sumner, M., & Wang, P. (2018). Single-Switch, Wide Voltage-Gain Range, Boost DC–DC Converter for Fuel Cell Vehicles. IEEE Transactions on Vehicular Technology, 67(1), 134-145. https://doi.org/10.1109/TVT.2017.2772087

In order to match voltages between the fuel cell stacks and the DC link bus of fuel cell vehicles, a single-switch Boost DC-DC converter with diode-capacitor modules is proposed in this paper. The capacitors are charged in parallel and discharged in... Read More about Single-Switch, Wide Voltage-Gain Range, Boost DC–DC Converter for Fuel Cell Vehicles.

A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles (2017)
Journal Article
Zhang, Y., Fu, C., Sumner, M., & Wang, P. (2018). A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles. IEEE Transactions on Industrial Electronics, 65(6), 5201-5212. https://doi.org/10.1109/TIE.2017.2745449

A quasi-Z-source Boost DC-DC converter which uses a switched-capacitor is proposed for fuel cell vehicles. The topology can obtain a high voltage gain with a wide input-voltage range, and requires only a low voltage stress across each of the componen... Read More about A Wide Input-Voltage Range Quasi-Z-Source Boost DC–DC Converter With High-Voltage Gain for Fuel Cell Vehicles.

Sensorless speed control of five-phase PMSM drives with low current distortion (2017)
Journal Article
Saleh, K., & Sumner, M. (in press). Sensorless speed control of five-phase PMSM drives with low current distortion. Electrical Engineering, https://doi.org/10.1007/s00202-017-0511-9

This paper introduces a design for a sensorless control of a five-phase PMSM drive working at low and zero speeds with low current distortion. The rotor position is obtained through tracking the saturation saliency by measuring the dynamic currents r... Read More about Sensorless speed control of five-phase PMSM drives with low current distortion.

A modelling and simulation of a sensorless control of five-phase PMSM drives using multi-dimension space vector modulation (2016)
Journal Article
Saleh, K., & Sumner, M. (2016). A modelling and simulation of a sensorless control of five-phase PMSM drives using multi-dimension space vector modulation. TELKOMNIKA (Telecommunication, Computing, Electronics and Control), 14(4), https://doi.org/10.12928/TELKOMNIKA.v14i4.3996

This paper introduces a new method to track the saturation saliency for position measurement of a five-phase PMSM motor fed by a five-phase inverter through measuring the dynamic current response of the motor line currents due to the IGBT switching a... Read More about A modelling and simulation of a sensorless control of five-phase PMSM drives using multi-dimension space vector modulation.

Real-time deterministic power flow control through dispatch of distributed energy resources (2015)
Journal Article
Fazeli, A., Sumner, M., Johnson, C. M., & Christopher, E. (2015). Real-time deterministic power flow control through dispatch of distributed energy resources. IET Generation, Transmission and Distribution, 9(16), https://doi.org/10.1049/iet-gtd.2015.0182

Integration of intermittent renewable resources and mass electrification of heat and transport into the existing electricity network, with limited network asset reinforcement requires incorporation of intelligence in form of active management of flex... Read More about Real-time deterministic power flow control through dispatch of distributed energy resources.

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.

Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system (2013)
Journal Article
Zhou, Q., Sumner, M., & Thomas, D. (2013). Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system. IET Electrical Systems in Transportation, 3(4), https://doi.org/10.1049/iet-est.2011.0056

The proposals for the `More Electric Aircraft' place a significant, increased demand on the electrical power distribution system. To increase safety and reduce aircraft maintenance times on the ground, there is a greater need to quickly identify and... Read More about Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system.