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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.

Convergence analysis and tuning of a sliding-mode ripple-correlation MPPT (2014)
Journal Article
Costabeber, A., Carraro, M., & Zigliotto, M. (2014). Convergence analysis and tuning of a sliding-mode ripple-correlation MPPT. IEEE Transactions on Energy Conversion, 30(2), doi:10.1109/TEC.2014.2371873

The development of fast Maximum Power Point Tracking (MPPT) algorithms for photovoltaic (PV) systems with high bandwidth and predictable response to irradiation transients is attractive for mobile applications and installations under fast changing we... Read More about Convergence analysis and tuning of a sliding-mode ripple-correlation MPPT.

A four-legs matrix converter ground power unit with repetitive voltage control (2014)
Journal Article
Rohuma, W., Zanchetta, P., Wheeler, P., & Empringham, L. (2015). A four-legs matrix converter ground power unit with repetitive voltage control. IEEE Transactions on Industrial Electronics, 62(4), doi:10.1109/TIE.2014.2379585

In this paper, a four-leg matrix converter is proposed as the power conversion core for aircraft ground power unit (GPU) applications. This structure allows easy management of unbalanced and nonlinear loads with minimal disruption of the power supply... Read More about A four-legs matrix converter ground power unit with repetitive voltage control.

3-Phase 4-wire matrix converter-based voltage sag/ swell generator to test low-voltage ride through in wind energy conversion systems (2014)
Journal Article
Diaz, M., Cardenas, R., Rojas, F., & Clare, J. C. (2014). 3-Phase 4-wire matrix converter-based voltage sag/ swell generator to test low-voltage ride through in wind energy conversion systems. IET Power Electronics, 7(12), doi:10.1049/iet-pel.2014.0065

The high penetration of energy from wind energy conversion systems (WECSs) can have a significant influence on the stability, power quality and reliability of power systems. Therefore several countries have developed stringent grid codes in recent ye... Read More about 3-Phase 4-wire matrix converter-based voltage sag/ swell generator to test low-voltage ride through in wind energy conversion systems.

Marine power distribution system fault location using a portable injection unit (2014)
Journal Article
Jia, K., Bi, T., Liu, B., Christopher, E., Thomas, D. W., & Sumner, M. (2015). Marine power distribution system fault location using a portable injection unit. IEEE Transactions on Power Delivery, 30(2), doi:10.1109/TPWRD.2014.2364259

A portable injection unit for Active Impedance Estimation (AIE) is built and tested in a DC zonal marine power distribution system to provide useful information for system protection and restoration. The portable unit generates current “spikes” and i... Read More about Marine power distribution system fault location using a portable injection unit.

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.

Widefield two laser interferometry (2014)
Journal Article
Patel, R., Achamfuo-Yeboah, S., Light, R. A., & Clark, M. (2014). Widefield two laser interferometry. Optics Express, 22(22), doi:10.1364/OE.22.027094

A novel system has been developed that can capture the wide- field interference pattern generated by interfering two independent and incoherent laser sources. The interferograms are captured using a custom CMOS modulated light camera (MLC) which is c... Read More about Widefield two laser interferometry.

Open circuit fault detection and diagnosis in matrix converters (2014)
Journal Article
Brunson, C., Empringham, L., De Lillo, L., Wheeler, P., & Clare, J. C. (2014). Open circuit fault detection and diagnosis in matrix converters. IEEE Transactions on Power Electronics, 30(5), doi:10.1109/TPEL.2014.2364152

With the increased use of power electronics in aerospace, automotive, industrial, and energy generation sectors, the demand for highly reliable and power dense solutions has increased. Matrix converters become attractive when taking into account dema... Read More about Open circuit fault detection and diagnosis in matrix converters.

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.

Mission profile-based reliability design and real-time life consumption estimation in power electronics (2014)
Journal Article
Mussallam, M., Yin, C., Bailey, C., & Johnson, C. M. (2014). Mission profile-based reliability design and real-time life consumption estimation in power electronics. IEEE Transactions on Power Electronics, 30(5), doi:10.1109/TPEL.2014.2358555

Power electronics are efficient for conversion and conditioning of the electrical energy through a wide range of applications. Proper life consumption estimation methods applied for power electronics that can operate in real-time under in-service mis... Read More about Mission profile-based reliability design and real-time life consumption estimation in power electronics.

Condenser-free contrast methods for transmitted-light microscopy (2014)
Journal Article
Webb, K. F. (2014). Condenser-free contrast methods for transmitted-light microscopy. Journal of Microscopy, 257(1), 8-22. doi:10.1111/jmi.12181

Phase contrast microscopy allows the study of highly transparent yet detail-rich specimens by producing intensity contrast from phase objects within the sample. Presented here is a generalized phase contrast illumination schema in which condenser opt... Read More about Condenser-free contrast methods for transmitted-light microscopy.

Built-in reliability design of highly integrated solid-state power switches with metal bump interconnects (2014)
Journal Article
Li, J., Castellazzi, A., Dai, T., Corfield, M., Solomon, A. K., & Johnson, C. M. (2015). Built-in reliability design of highly integrated solid-state power switches with metal bump interconnects. IEEE Transactions on Power Electronics, 30(5), doi:10.1109/TPEL.2014.2357334

A stacked substrate–chip–bump–chip–substrate assembly has been demonstrated in the construction of power switch modules with high power density and good electrical performance. In this paper, special effort has been devoted to material selection and... Read More about Built-in reliability design of highly integrated solid-state power switches with metal bump interconnects.

Multi-task control strategy for grid-tied inverters based on conservative power theory (2014)
Journal Article
Marafão, F. P., Brandão, D. I., Costabeber, A., & Paredes, H. K. (2015). Multi-task control strategy for grid-tied inverters based on conservative power theory. IET Renewable Power Generation, 9(2), doi:10.1049/iet-rpg.2014.0065

In recent years, the concept of decentralizing power generation through the deployment of distributed generators (DGs) has been widely accepted and applied, driven by the growing market of renewable energy sources, in particular photovoltaic, wind an... Read More about Multi-task control strategy for grid-tied inverters based on conservative power theory.

Calibration of a novel microstructural damage model for wire bonds (2014)
Journal Article
Yang, L., Agyakwa, P., & Johnson, C. (2014). Calibration of a novel microstructural damage model for wire bonds. IEEE Transactions on Device and Materials Reliability, 14(4), doi:10.1109/TDMR.2014.2354739

In a previous paper, a new time-domain damage-based physics model was proposed for the lifetime prediction of wire bond interconnects in power electronic modules. Unlike cycle-dependent life prediction methodologies, this model innovatively incorpora... Read More about Calibration of a novel microstructural damage model for wire bonds.

Highly sensitive multipoint real-time kinetic detection of Surface Plasmon bioanalytes with custom CMOS cameras (2014)
Journal Article
Wang, J., Smith, R. J., Light, R. A., Richens, J. L., Zhang, J., O'Shea, P., …Somekh, M. G. (2014). Highly sensitive multipoint real-time kinetic detection of Surface Plasmon bioanalytes with custom CMOS cameras. Biosensors and Bioelectronics, 58, 157-164. https://doi.org/10.1016/j.bios.2014.02.042

Phase sensitive Surface Plasmon Resonance (SPR) techniques are a popular means of characterizing biomolecular interactions. However, limitations due to the narrow dynamic range and difficulty in adapting the method for multi-point sensing have restri... Read More about Highly sensitive multipoint real-time kinetic detection of Surface Plasmon bioanalytes with custom CMOS cameras.

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 Applicationshttps://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.