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Experimental Evaluation and Efficiency Optimisation of a Grid-Connected Converter for Household Energy Storage Applications (2014)
Conference Proceeding
Kulsangcharoen, P., Asher, G., Rashed, M., Klumpner, C., Patel, C., & De, D. (2014). Experimental Evaluation and Efficiency Optimisation of a Grid-Connected Converter for Household Energy Storage Applications. In 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014). https://doi.org/10.1049/cp.2014.0454

This paper presents the design and the experimental evaluation of a power converter for energy storage applications suitable for household installation or to facilitate distributed energy storage capability within a local/community low-voltage grid.... Read More about Experimental Evaluation and Efficiency Optimisation of a Grid-Connected Converter for Household Energy Storage Applications.

Impedance sensitive STATCOM control for systems supported by renewable generation (2014)
Conference Proceeding
Rose, C. J., Sumner, M., Thomas, D. W., & Christopher, E. (in press). Impedance sensitive STATCOM control for systems supported by renewable generation.

Reactive power control is known to be an effective means of controlling voltage; however, for optimal performance, the system reactance must be known. Power systems with high re-newable energy penetration have been known to have voltage stability iss... Read More about Impedance sensitive STATCOM control for systems supported by renewable generation.

Method of efficiently predicting the conducted emissions of multiple VSCs (2014)
Conference Proceeding
Ivry, P. M., Oke, O., Thomas, D. W., & Sumner, M. (in press). Method of efficiently predicting the conducted emissions of multiple VSCs.

Various types of power converters including Voltage Source Converters (VSCs) have been known to produce conducted emissions. The net effect of simultaneously operating multiple VSCs is non-linear and this makes the prediction of the emission level mo... Read More about Method of efficiently predicting the conducted emissions of multiple VSCs.

Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers (2014)
Conference Proceeding
Rawa, M., Thomas, D. W., & Sumner, M. (in press). Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

The penetration of nonlinear loads on power systems increases distortion levels and can cause severe problems to power systems. Many factors affect the degree of generated harmonics including the background voltage distortion and percentage of nonlin... Read More about Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI (2014)
Conference Proceeding
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014). A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI. In 2014 IEEE Energy Conversion Congress and Exposition (ECCE). https://doi.org/10.1109/ecce.2014.6953779

Hybrid converters consist of a main inverter processing the bulk of the power with poor waveform performance and a fast and versatile auxiliary inverter to correct the distortion. In this paper, the main converter is a medium voltage NPC inverter and... Read More about A hybrid inverter system for medium voltage applications using a low voltage auxiliary CSI.

Power flow control for power and voltage management in future smart energy communities (2014)
Conference Proceeding
Fazeli, A., Sumner, M., Christopher, E., & Johnson, C. M. (2014). Power flow control for power and voltage management in future smart energy communities.

The Community Power Flow Control (CPFC) Algorithm has been proposed as a technique for managing electrical power and energy within small communities. The CPFC manages the resources in the community (DSM, energy storage, RES) in order to control the c... Read More about Power flow control for power and voltage management in future smart energy communities.

Assessing the accuracy of loss estimation methods for supercapacitor energy storage devices operating under constant power cycling (2014)
Conference Proceeding
Kulsangcharoen, P., Klumpner, C., Rashed, M., Asher, G., Chen, G. Z., & Norman, S. A. (2014). Assessing the accuracy of loss estimation methods for supercapacitor energy storage devices operating under constant power cycling. In 2014 16th European Conference on Power Electronics and Applications. https://doi.org/10.1109/epe.2014.6911043

This paper assesses different energy loss estimation methods using the supercapacitor model parameters extracted from the electrochemical impedance spectroscopy (EIS). Two energy loss estimation methods are applied to two similar supercapacitors from... Read More about Assessing the accuracy of loss estimation methods for supercapacitor energy storage devices operating under constant power cycling.

Built-in reliability design of a high-frequency SiC MOSFET power module (2014)
Conference Proceeding
Li, J., Gurpinar, E., Lopez Arevalo, S., Castellazzi, A., & Mills, L. (in press). Built-in reliability design of a high-frequency SiC MOSFET power module.

A high frequency SiC MOSFET-based three-phase, 2-level power module has been designed, simulated, assembled and tested. The design followed a built-in reliability approach, involving extensive finite-element simulation based analysis of the electro-t... Read More about Built-in reliability design of a high-frequency SiC MOSFET power module.

Testing of a lightweight SiC power module for avionic applications (2014)
Conference Proceeding
Gurpinar, E., Lopez Arevalo, S., Li, J., De, D., Castellazzi, A., & Mills, L. (in press). Testing of a lightweight SiC power module for avionic applications.

Functional and performance tests of a three-phase, two-level power module based on CREE 1.2kV SiC MOSFETs for avionic applications is presented in this paper. SiC devices have superior properties over conventional Si devices at high voltage operation... Read More about Testing of a lightweight SiC power module for avionic applications.

Snappy App: a mobile continuous performance test with physical activity measurement for assessing Attention Deficit Hyperactivity Disorder (2014)
Conference Proceeding
Young, Z., Craven, M. P., Groom, M. J., & Crowe, J. A. (2014). Snappy App: a mobile continuous performance test with physical activity measurement for assessing Attention Deficit Hyperactivity Disorder. In M. Kurosu (Ed.), Human-computer interaction: applications and services: 16th international conference, HCI International 2014, Heraklion, Crete, Greece, June 22-27, 2014, proceedings. Part III (363–373). https://doi.org/10.1007/978-3-319-07227-2_35

A Continuous Performance Test (CPT) was incorporated into a smartphone application (App) to measure three symptom domains associated with Attention Deficit Hyperactivity Disorder (ADHD); attention, impulsivity and hyperactivity. The App was pilot tes... Read More about Snappy App: a mobile continuous performance test with physical activity measurement for assessing Attention Deficit Hyperactivity Disorder.

Practical limitation on operation of nonlinear parity-time Bragg gratings (2014)
Conference Proceeding
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Practical limitation on operation of nonlinear parity-time Bragg gratings.

The paper analyses the operation of PT Bragg gratings when the dielectric material is considered to be both dispersive and nonlinear and gain and loss are saturable. The paper demonstrates the application of the nonlinear PT Bragg Grating as an optic... Read More about Practical limitation on operation of nonlinear parity-time Bragg gratings.

A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF) (2014)
Conference Proceeding
Papadopoulos, S., Rashed, M., Klumpner, C., & Wheeler, P. (2014). A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF). In 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014). https://doi.org/10.1049/cp.2014.0456

This paper proposes a new hybrid inverter solution for medium/high voltage applications that consists of a slow switching inverter using high voltage or series connected switching devices, fitted with a low kVA rated auxiliary current source inverter... Read More about A hybrid inverter solution for medium voltage applications using series capacitor and a CSI Active Power Filter (SC-APF).

Intelligent impedance based fault-location for zonal power systems (2014)
Conference Proceeding
Rose, C. J., Thomas, D. W., Sumner, M., Christopher, E., & Lopez Arevalo, S. (2014). Intelligent impedance based fault-location for zonal power systems.

A laboratory based demonstrator has been constructed to study the Active Impedance Estimation (AIE) technique as a means of locating faults on a power system. The demonstrator has been used to verify results from simulation experimentally. The AIE sy... Read More about Intelligent impedance based fault-location for zonal power systems.

A non-destructive study of crack development during thermal cycling of Al wire bonds using x-ray computed tomography (2014)
Conference Proceeding
Agyakwa, P., Yang, L., Corfield, M., & Johnson, C. M. (2014). A non-destructive study of crack development during thermal cycling of Al wire bonds using x-ray computed tomography.

This paper concerns the non-destructive visualisation of the evolution of damage within ultrasonically bonded alumini-um wires using three dimensional x-ray computed tomography. We demonstrate the potential to observe the progressive accumulation of... Read More about A non-destructive study of crack development during thermal cycling of Al wire bonds using x-ray computed tomography.

Implementation of a multi-level Power Electronic Inverter library in Modelica (2014)
Conference Proceeding
Hill, C., Giangrande, P., Gerada, C., & Bozhko, S. (in press). Implementation of a multi-level Power Electronic Inverter library in Modelica.

This paper presents a newly developed Power Electronic Inverter library in Modelica. The library utilises a multi-level approach with increasing model complexity at progressively higher levels. All levels are fully interchangeable so as to provide a... Read More about Implementation of a multi-level Power Electronic Inverter library in Modelica.

Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study (2014)
Conference Proceeding
Phang, S., Vukovic, A., Benson, T. M., Creagh, S., Sewell, P., & Gradoni, G. (2014). Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

In this paper, numerical modelling of Parity-Time (PT) coupled waveguides is reported. The PT coupled waveguide structure consists of two coupled slab waveguides based on GaAs material with gain/loss material parameter models, including both dispersi... Read More about Saturable and dispersive parity-time symmetric directional coupler: a transmission-line modelling study.

Modelling of dispersive PT-symmetric Bragg grating (2014)
Conference Proceeding
Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2014). Modelling of dispersive PT-symmetric Bragg grating.

This paper reports on the time-domain numerical model of a parity-time Bragg grating with saturated and dispersive gain. The model is compared against the ideal PT scenario where the gain is constant and unsaturated for all frequencies.