All Outputs (42)

Novel silicon carbide integrated power module for EV application (2018)
Presentation / Conference Contribution
Mouawad, B., Espina, J., Li, J., Empringham, L., & Johnson, C. M. (2018, May). Novel silicon carbide integrated power module for EV application. Presented at WiPDA 2018 - IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia

The successful penetration of Electric Vehicles (EVs) into the global automotive markets requires the developments of cost effective, high performance and high integration power electronic systems. The present work is concerned with the structural in... Read More about Novel silicon carbide integrated power module for EV application.

Next generation integrated drive: a novel thermal and electrical integration technique for high power density converters used in automotive drive systems (2018)
Presentation / Conference Contribution
Ahmadi, B., Espina, J., De Lillo, L., Abebe, R., Empringham, L., & Johnson, C. M. Next generation integrated drive: a novel thermal and electrical integration technique for high power density converters used in automotive drive systems. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

In this paper, an innovative method of electro-thermal integration of a drive system is presented. Important challenges of this integration consist of, firstly coupled thermal design of switching power modules and PM electric motor and secondly integ... Read More about Next generation integrated drive: a novel thermal and electrical integration technique for high power density converters used in automotive drive systems.

Design and testing of electromechanical actuator for aerospace applications (2018)
Presentation / Conference Contribution
Papini, L., Connor, P., Patel, C., Empringham, L., Gerada, C., & Wheeler, P. (2018, January). Design and testing of electromechanical actuator for aerospace applications. Presented at 2018 25th International Workshop on Electric Drives: Optimization in Control of Electric Drives (IWED), Moscow, Russia

Electromechanical actuators are gaining interest in the aerospace industry within the More Electrical Aircraft (MEA) architecture. The end-goal of fully electric aircraft includes Electromechanical actuation for flight control systems. The design and... Read More about Design and testing of electromechanical actuator for aerospace applications.

Matrix converter open circuit fault diagnosis with asymmetric one zero SVM (2017)
Presentation / Conference Contribution
Zhang, J., Empringham, L., De Lillo, L., Dan, H., & Wheeler, P. Matrix converter open circuit fault diagnosis with asymmetric one zero SVM. Presented at 2017 IEEE Energy Conversion Congress and Exposition (ECCE)

An open-circuit fault detection and diagnosis strategy for a direct matrix converter is proposed in this paper. The current recirculating path during an open circuit condition is considered in detail with the aim of contributing more expert knowledge... Read More about Matrix converter open circuit fault diagnosis with asymmetric one zero SVM.

Highly-integrated power cell for high-power wide band-gap power converters (2017)
Presentation / Conference Contribution
Espina, J., Ahmadi, B., Empringham, L., De Lillo, L., & Johnson, C. M. Highly-integrated power cell for high-power wide band-gap power converters. Presented at 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)

The fast switching speeds and low specific conduction losses of wide band-gap semiconductors allow the realisation of high-frequency, high power-density switching converters with dramatically reduced passive component requirements compared to Silicon... Read More about Highly-integrated power cell for high-power wide band-gap power converters.

Differential buck single phase grid connected AC-DC converter with active power decoupling using a flipping Capacitor (2017)
Presentation / Conference Contribution
Gottardo, D., De Lillo, L., Empringham, L., & Costabeber, A. Differential buck single phase grid connected AC-DC converter with active power decoupling using a flipping Capacitor. Presented at 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG 2017)

This paper introduces a new single-phase AC-DC converter capable of achieving independent voltage control across a dedicated power decoupling capacitor, by exploiting the same full bridge that controls the grid current in combination with two bidirec... Read More about Differential buck single phase grid connected AC-DC converter with active power decoupling using a flipping Capacitor.

Control of a direct matrix converter with modulated model predictive control (2017)
Journal Article
Vijayagopal, M., Zanchetta, P., Empringham, L., De Lillo, L., Tarisciotti, L., & Wheeler, P. (2017). Control of a direct matrix converter with modulated model predictive control. IEEE Transactions on Industry Applications, 53(3), 2342-2349. https://doi.org/10.1109/TIA.2017.2674602

This paper investigates the use of a model- predic-tive control strategy to control a direct matrix converter. The proposed control method combines the features of the classical Model Predictive Control and the Space Vector Modulation technique into... Read More about Control of a direct matrix converter with modulated model predictive control.

A low capacitance single-phase AC-DC converter with inherent power ripple decoupling (2016)
Presentation / Conference Contribution
Gottardo, D., De Lillo, L., Empringham, L., & Costabeber, A. A low capacitance single-phase AC-DC converter with inherent power ripple decoupling. Presented at 42nd Annual Conference of IEEE Industrial Electronics Society (IECON 2016)

This paper proposes a new single-phase AC-DC conversion topology with inherent power ripple decoupling, based on the combination of a PWM H-bridge inverter, an AC side LC filter and a ZVS line commutated H-bridge. A capacitor on the AC side is used a... Read More about A low capacitance single-phase AC-DC converter with inherent power ripple decoupling.

Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs (2016)
Presentation / Conference Contribution
Trentin, A., Zanchetta, P., Empringham, L., De Lillo, L., Wheeler, P., & Clare, J. C. Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs. Presented at 2016 IEEE Energy Conversion Congress and Exposition (ECCE)

This paper presents an experimental comparison between a Direct Matrix Converter and an Indirect Matrix Converter in terms of semiconductor devices thermal cycling. Both converters have been designed and built using SiC MOSFETs; the Indirect Matrix C... Read More about Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs.

Efficiency evaluation of fully integrated on-board EV battery chargers With nine-phase machines (2016)
Journal Article
Bodo, N., Levi, E., Subotic, I., Espina, J., Empringham, L., & Johnson, C. M. (2016). Efficiency evaluation of fully integrated on-board EV battery chargers With nine-phase machines. IEEE Transactions on Energy Conversion, 32(1), 257-266. https://doi.org/10.1109/TEC.2016.2606657

A fully integrated on-board battery charger for future electric vehicles (EVs) has been recently introduced. It reutilizes all the propulsion components of an EV in charging/vehicle-to-grid (V2G) modes, it does not require any additional components o... Read More about Efficiency evaluation of fully integrated on-board EV battery chargers With nine-phase machines.

Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs (2016)
Journal Article
Trentin, A., Liliana de Lillio, L., Empringham, L., Zanchetta, P., Wheeler, P., & Clare, J. C. (2016). Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs. IEEE Transactions on Industry Applications, 52(5), 4135-4145. https://doi.org/10.1109/TIA.2016.2573752

This paper presents an experimental efficiency comparison study between two different direct AC-AC converter topologies: a direct matrix converter (DMC) and an indirect matrix converter (IMC). The evaluation is performed under variable load condition... Read More about Experimental efficiency comparison between a direct matrix converter and an indirect matrix converter using both Si IGBTs and SiC MOSFETs.

Conducted emission evaluation for direct matrix converters (2016)
Presentation / Conference Contribution
Nothofer, A., Tarisciotti, L., Greedy, S., Empringham, L., De Lillo, L., & Degano, M. Conducted emission evaluation for direct matrix converters. Presented at 2016 ESA Workshop on Aerospace EMC

Matrix converters have been recently proposed as an alternative solution to the standard back-to-back converter in aerospace applications. However, Electromagnetic Interference (EMI), in particular, conducted emissions represent a critical aspect for... Read More about Conducted emission evaluation for direct matrix converters.

A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier (2015)
Journal Article
Song, W.-Z., Xing, F.-X., Yang, H., Empringham, L., De Lillo, L., Wheeler, P., Li, J., & Zhong, Y.-R. (2015). A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier. IEEE Journal of Emerging and Selected Topics in Power Electronics, 4(2), https://doi.org/10.1109/JESTPE.2015.2503125

This paper presents a solution to the control of the three times fundamental frequency fluctuation of the neutral-point in a VIENNA rectifier. A hybrid method combining a dynamic adjustment factor with a voltage deviation control of the split DC-link... Read More about A hybrid control method to suppress the three time fundamental frequency neutral-point voltage fluctuation in a VIENNA rectifier.

Short-circuit fault analysis and isolation strategy for matrix converters (2015)
Journal Article
Wang, L.-N., De Lillo, L., Brunson, C., Empringham, L., & Wheeler, P. (in press). Short-circuit fault analysis and isolation strategy for matrix converters. Journal of Central South University of Technology, 22(9), https://doi.org/10.1007/s11771-015-2886-y

The behavior of matrix converter (MC) drive systems under the condition of MC short-circuit faults is comprehensively investigated. Two isolation strategies using semiconductors and high speed fuses (HSFs) for MC short-circuit faults are examined and... Read More about Short-circuit fault analysis and isolation strategy for matrix converters.

Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs (2015)
Journal Article
Trentin, A., De Lillo, L., Empringham, L., Wheeler, P., & Clare, J. C. (2015). Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs. IEEE Journal of Emerging and Selected Topics in Power Electronics, 3(2), https://doi.org/10.1109/JESTPE.2014.2381001

This paper presents an analytical and experimental comparison between comparable Silicon (Si) IGBTs and Silicon Carbide (SiC) MOSFETS when used in a direct AC/AC matrix converter circuit. The switching performance of the two devices is analysed and t... Read More about Experimental comparison of a matrix converter using Si IGBT and SiC MOSFETs.

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), https://doi.org/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.

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), https://doi.org/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.

Reduction of output common mode voltage using a novel SVM implementation in matrix converters for improved motor lifetime (2014)
Journal Article
Espina, J., Ortega, C., De Lillo, L., Empringham, L., Balcells, J., & Arias, A. (2014). Reduction of output common mode voltage using a novel SVM implementation in matrix converters for improved motor lifetime. IEEE Transactions on Industrial Electronics, 61(11), https://doi.org/10.1109/TIE.2014.2304931

This paper presents the study of an alternative Space Vector Modulation (SVM) implementation for Matrix Converters (MC) which reduces the output Common Mode (CM) voltage. The strategy is based on replacing the MC zero vectors by the rotating ones. In... Read More about Reduction of output common mode voltage using a novel SVM implementation in matrix converters for improved motor lifetime.

Design of a high-force-density tubular motor (2014)
Journal Article
Galea, M., Buticchi, G., Empringham, L., De Lillo, L., & Gerada, C. (2014). Design of a high-force-density tubular motor. IEEE Transactions on Industry Applications, 50(4), https://doi.org/10.1109/TIA.2014.2300190

This paper deals with the design, construction and experimental verification of a high force density, tubular, linear, permanent magnet motor, driven from a high power density matrix converter for an aerospace application. The work also describes the... Read More about Design of a high-force-density tubular motor.

Design challenges in the use of silicon carbide JFETs in matrix converter applications (2013)
Journal Article
Empringham, L., De Lillo, L., & Shulz, M. (2013). Design challenges in the use of silicon carbide JFETs in matrix converter applications. IEEE Transactions on Power Electronics, 29(5), https://doi.org/10.1109/TPEL.2013.2290835

This paper investigates some of the challenges en¬countered during the implementation of a Silicon Carbide JFET matrix converter which has been designed to meet a specific power density of 20kW/litre with forced air cooling. After a brief introductio... Read More about Design challenges in the use of silicon carbide JFETs in matrix converter applications.