Professor LEE EMPRINGHAM's Outputs (10)

Packaging for fast switching power electronics (2023)
Presentation / Conference Contribution
Marchant, S., Dai, J., Mouawad, B., Empringham, L., & Clare, J. (2023). Packaging for fast switching power electronics. In 2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP). https://doi.org/10.1109/SPEC56436.2023.10408379

This work investigates printed circuit board embedding of the power devices in order to support low inductance, fast switching package designs. The embedding process is discussed and a half bridge package is designed around a 500V supply voltage and... Read More about Packaging for fast switching power electronics.

A Topology-Morphing Series Resonant Converter for Photovoltaic Module Applications (2022)
Presentation / Conference Contribution
Sergentanis, G., De Lillo, L., Empringham, L., & Johnson, C. M. (2022). A Topology-Morphing Series Resonant Converter for Photovoltaic Module Applications. In 2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)

Residential solar photovoltaic (PV) installations frequently use power optimizers to increase their energy production. In this application, the ability to regulate a wide range of voltage with high efficiency is highly desirable. Thus, this paper pro... Read More about A Topology-Morphing Series Resonant Converter for Photovoltaic Module Applications.

Influence of Emitter Side Design on the Unintentional Turn-on of 10kV+ SiC n-IGBTs (2022)
Presentation / Conference Contribution
Almpanis, I., Antoniou, M., Evans, P., Empringham, L., Gammon, P., Udrea, F., …Lophitis, N. (2022). Influence of Emitter Side Design on the Unintentional Turn-on of 10kV+ SiC n-IGBTs. In 2022 IEEE Energy Conversion Congress and Exposition (ECCE). https://doi.org/10.1109/ecce50734.2022.9947492

Silicon Carbide (SiC) N-channel Insulated Gate Bipolar Transistors (n-IGBTs) rated higher than 10kV can improve Medium Voltage and High Voltage power electronics due to the favourable combination of SiC material with the nIGBT device structure. This... Read More about Influence of Emitter Side Design on the Unintentional Turn-on of 10kV+ SiC n-IGBTs.

Short-Circuit Performance Investigation of 10kV+ Rated SiC n-IGBT (2022)
Presentation / Conference Contribution
Almpanis, I., Gammon, P., Mawby, P., Evans, P., Empringham, L., Lophitis, N., …Udrea, F. (2022). Short-Circuit Performance Investigation of 10kV+ Rated SiC n-IGBT. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe (WiPDA-Europe). https://doi.org/10.1109/WiPDAEurope55971.2022.9936475

This paper presents a comprehensive short-circuit robustness investigation of 4H- Silicon Carbide (SiC) n-type Insulated Gate Bipolar Transistors (nIGBTs) for Medium-Voltage and High- Voltage applications. Numerical electrothermal TCAD simulations ev... Read More about Short-Circuit Performance Investigation of 10kV+ Rated SiC n-IGBT.

Single Stage Dual Active Bridge AC-DC Converter with Active Power Decoupling (2018)
Presentation / Conference Contribution
Gottardo, D., De Lillo, L., Empringham, L., Costabeber, A., & Chen, L. (2018). Single Stage Dual Active Bridge AC-DC Converter with Active Power Decoupling. In SPEEDAM 2018 - Proceedings: International Symposium on Power Electronics, Electrical Drives, Automation and Motion (497-501). https://doi.org/10.1109/SPEEDAM.2018.8445410

The paper introduces a new a isolated DC-AC DAB converter topology, capable of active power decoupling on the AC side of the transformer, made up of two full bridges with no additional active component. The differential voltage modulated by the DC-si... Read More about Single Stage Dual Active Bridge AC-DC Converter with Active Power Decoupling.

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. (2017). Matrix converter open circuit fault diagnosis with asymmetric one zero SVM.

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.

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. (2017). Differential buck single phase grid connected AC-DC converter with active power decoupling using a flipping Capacitor.

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.

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. (2016). A low capacitance single-phase AC-DC converter with inherent power ripple decoupling.

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. (2016). Experimental comparison of devices thermal cycling in direct matrix converters (DMC) and Indirect Matrix Converters (IMC) using SiC MOSFETs.

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.

HF induction motor modeling using Genetic Algorithms and experimental impedance measurement (2010)
Presentation / Conference Contribution
Degano, M., Zanchetta, P., Clare, J., & Empringham, L. (2010). HF induction motor modeling using Genetic Algorithms and experimental impedance measurement. . https://doi.org/10.1109/ISIE.2010.5637052

High frequency (HF) models of electrical motors and converters are of basic importance for Electro Magnetic Compatibility (EMC) characterization of electrical drives and for EMI filters design. In this paper a method for characterizing and tuning HF... Read More about HF induction motor modeling using Genetic Algorithms and experimental impedance measurement.