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Influence of gate bias on the avalanche ruggedness of SiC power MOSFETs (2017)
Conference Proceeding
Fayyaz, A., Castellazzi, A., Romano, G., Riccio, M., Urresti, J., & Wright, N. (2017). Influence of gate bias on the avalanche ruggedness of SiC power MOSFETs.

This paper investigates the effect of negative gate bias voltage (VGS) on the avalanche breakdown robustness of commercial state-of-the-art silicon carbide (SiC) power MOSFETs. The device’s ability to withstand energy dissipation during avalanche reg... Read More about Influence of gate bias on the avalanche ruggedness of SiC power MOSFETs.

A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module (2017)
Journal Article
Li, J., Castellazzi, A., Eleffendi, M. A., Gurpinar, E., Johnson, C. M., & Mills, L. (2018). A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module. IEEE Transactions on Power Electronics, 33(3), 2494-2508. https://doi.org/10.1109/TPEL.2017.2697959

© 2017 IEEE. This paper is concerned with the thermal models which can physically reflect the heat-flow paths in a lightweight three-phase half-bridge two-level SiC power module with six MOSFETs and can be used for coupled electrothermal simulation.... Read More about A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module.

Measuring structure functions of power devices in inverters (2017)
Journal Article
Aliyu, A. M., & Castellazzi, A. (in press). Measuring structure functions of power devices in inverters. Microelectronics Reliability, https://doi.org/10.1016/j.microrel.2017.03.036

This paper proposes the measuring of structure function from power devices on-board induction motor drives and multilevel converters. It puts forward the issues and methodology related to on-board measurement of the cooling curve and derivation of th... Read More about Measuring structure functions of power devices in inverters.

Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends (2017)
Journal Article
Gu, C., Wheeler, P., Castellazzi, A., Watson, A. J., & Effah, F. (2017). Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends. Energies, 10(4), Article 495. https://doi.org/10.3390/en10040495

Circuit breakers (CBs) are the main protection devices for both alternating current (AC) and direct current (DC) power systems, ranging from tens of watts up to megawatts. This paper reviews the current status for solid-state circuit breakers (SSCBs)... Read More about Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends.

Transient out-of-SOA robustness of SiC power MOSFETs (2017)
Conference Proceeding
Castellazzi, A., Fayyaz, A., Romano, G., Riccio, M., Irace, A., Urresti-Ibanez, J., & Wright, N. (2017). Transient out-of-SOA robustness of SiC power MOSFETs.

Beyond their main function of high-frequency switches in modulated power converters, solid-state power devices are required in many application domains to also ensure robustness against a number of overload operational conditions. This paper consider... Read More about Transient out-of-SOA robustness of SiC power MOSFETs.

A comprehensive study on the avalanche breakdown robustness of silicon carbide power MOSFETs (2017)
Journal Article
Fayyaz, A., Romano, G., Urresti, J., Riccio, M., Castellazzi, A., Irace, A., & Wright, N. (2017). A comprehensive study on the avalanche breakdown robustness of silicon carbide power MOSFETs. Energies, 10(4), Article 452. https://doi.org/10.3390/en10040452

This paper presents an in-depth investigation into the avalanche breakdown robustness of commercial state-of-the-art silicon carbide (SiC) power MOSFETs comprising of functional as well as structural characterization and the corresponding underlying... Read More about A comprehensive study on the avalanche breakdown robustness of silicon carbide power MOSFETs.

High-frequency modulated secondary-side self-powered isolated gate driver for full range PWM operation of SiC power MOSFETs (2017)
Conference Proceeding
Garcia, J., Gurpinar, E., & Castellazzi, A. (2017). High-frequency modulated secondary-side self-powered isolated gate driver for full range PWM operation of SiC power MOSFETs.

The present work proposes a solution for an isolated gate driver suitable for SiC MOSFETs. The driver is implemented by means of two small magnetic transformers, to provide the turn-on and turn-off gate signals, as well as the power required for an a... Read More about High-frequency modulated secondary-side self-powered isolated gate driver for full range PWM operation of SiC power MOSFETs.

Evaluation of SiC Schottky diodes using pressure contacts (2017)
Journal Article
Ortiz Gonzalez, J., Alatise, O., Aliyu, A. M., Rajaguru, P., Castellazzi, A., Ran, L., …Bailey, C. (2017). Evaluation of SiC Schottky diodes using pressure contacts. IEEE Transactions on Industrial Electronics, 64(10), 8213-8223. https://doi.org/10.1109/TIE.2017.2677348

The thermomechanical reliability of SiC power devices and modules is increasingly becoming of interest especially for high power applications where power cycling performance is critical. Press-pack assemblies are a trusted and reliable packaging solu... Read More about Evaluation of SiC Schottky diodes using pressure contacts.

Prognostic System for Power Modules in Converter Systems Using Structure Function (2017)
Journal Article
Aliyu, A. M., & Castellazzi, A. (2018). Prognostic System for Power Modules in Converter Systems Using Structure Function. IEEE Transactions on Power Electronics, 33(1), 595-605. https://doi.org/10.1109/TPEL.2017.2672823

This paper proposes an on-board methodology for monitoring the health of power converter modules in drive systems, using vector control heating and structure function to check for degradation. It puts forward a system that is used on-board to measure... Read More about Prognostic System for Power Modules in Converter Systems Using Structure Function.

Modular plug-in high performance integrated single-phase inverter (2016)
Conference Proceeding
Solomon, A. K., & Castellazzi, A. (2016). Modular plug-in high performance integrated single-phase inverter. In 2016 6th Electronic System-Integration Technology Conference (ESTC) (1-4). https://doi.org/10.1109/ESTC.2016.7764720

The recent research exercises have targeted the transfer of the sandwich package benefits to application bespoke switch design, including flip-chip and device stacking topology [1]. This work presents the development of a highly integrated power swit... Read More about Modular plug-in high performance integrated single-phase inverter.

Ultra-low inductance design for a GaN HEMT based 3L-ANPC inverter (2016)
Conference Proceeding
Gurpinar, E., Castellazzi, A., Iannuzzo, F., Yang, Y., & Blaabjerg, F. (2016). Ultra-low inductance design for a GaN HEMT based 3L-ANPC inverter. In 2016 IEEE Energy Conversion Congress and Exposition (ECCE) - Proceedings (1-8). https://doi.org/10.1109/ECCE.2016.7855540

In this paper, an ultra-low inductance power cell design for a 3L-ANPC based on 650 V GaN HEMT devices is presented. The 3L-ANPC topology with GaN HEMT devices and the selected modulation scheme suitable for wide-bandgap (WBG) devices are presented.... Read More about Ultra-low inductance design for a GaN HEMT based 3L-ANPC inverter.

UIS failure mechanism of SiC power MOSFETs (2016)
Conference Proceeding
Fayyaz, A., Castellazzi, A., Romano, G., Riccio, M., Urresti, J., & Wright, N. (2016). UIS failure mechanism of SiC power MOSFETs.

This paper investigates the failure mechanism of SiC power MOSFETs during avalanche breakdown under unclamped inductive switching (UIS) test regime. Switches deployed within motor drive applications could experience undesired avalanche breakdown even... Read More about UIS failure mechanism of SiC power MOSFETs.

Integrated bi-directional SiC MOSFET power switches for efficient, power dense and reliable matrix converter assembly (2016)
Conference Proceeding
Lasserre, P., Lambert, D., & Castellazzi, A. (in press). Integrated bi-directional SiC MOSFET power switches for efficient, power dense and reliable matrix converter assembly.

This paper presents an innovative device packaging and system integration approach aimed at optimizing the electro-thermal, electro-magnetic and thermo-mechanical performance of the switches in a power converter. In particular, the focus is on state-... Read More about Integrated bi-directional SiC MOSFET power switches for efficient, power dense and reliable matrix converter assembly.

Novel multilevel hybrid inverter topology with power scalability (2016)
Conference Proceeding
Gurpinar, E., & Castellazzi, A. (2016). Novel multilevel hybrid inverter topology with power scalability. In IECON 2016 Proceedings - 42nd Annual Conference of the IEEE Industrial Electronics Society (6516-6521). https://doi.org/10.1109/IECON.2016.7793221

In this paper, a novel multilevel hybrid inverter is presented. The inverter is based on 2 floating capacitors and 16 active switches for five-level voltage waveform between the output of the inverter and neutral point of DC link. The proposed invert... Read More about Novel multilevel hybrid inverter topology with power scalability.

Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems (2016)
Conference Proceeding
Hussein, A., Castellazzi, A., Wheeler, P., & Klumpner, C. (in press). Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems.

Modern power electronics devices based on SiC power MOSFETs technology become more demanding in the last few years. They show better performance over Si-IGBTs on renewable energy power conversion systems due to their higher switching frequency, highe... Read More about Performance benchmark of Si IGBTs vs. SiC MOSFETs in small-scale wind energy conversion systems.

Impulse transformer based secondary-side self-powered gate-driver for wide-range PWM operation of SiC power MOSFETs (2016)
Conference Proceeding
Garcia, J., Gurpinar, E., & Castellazzi, A. (2016). Impulse transformer based secondary-side self-powered gate-driver for wide-range PWM operation of SiC power MOSFETs.

This work proposes a solution for an isolated gate driver for SiC MOSFETs, based on a magnetic transformer that simultaneously provides to the secondary side the turn-on and turn-off gate signals and the power required for an adequate gate control. T... Read More about Impulse transformer based secondary-side self-powered gate-driver for wide-range PWM operation of SiC power MOSFETs.

Impact of SiC technology in a three-port active bridge converter for energy storage integrated solid state transformer applications (2016)
Conference Proceeding
Wang, Z., Castellazzi, A., Saeed, S., Navarro-Rodríguez, Á., & Garcia, P. (2016). Impact of SiC technology in a three-port active bridge converter for energy storage integrated solid state transformer applications.

Silicon Carbide (SiC) MOSFET power module has become commercially available in the past few years, and it is attractive in solid state transformers (SSTs) applications to replace Silicon (Si)-based IGBTs. This paper is focused on the efficiency compa... Read More about Impact of SiC technology in a three-port active bridge converter for energy storage integrated solid state transformer applications.

Multi-source energy networks for cargo vessels (2016)
Journal Article
Ahmed, S., Castellazzi, A., & Williams, A. (2016). Multi-source energy networks for cargo vessels. Transactions on Environment and Electrical Engineering, 1(4), https://doi.org/10.22149/teee.v1i4.52

The paper discusses the feasibility of installing renewable energy generation technologies on sea-going transport, taking into account the additional weight and power consumption. This study in based on the power management of a 26,198 tonne commerci... Read More about Multi-source energy networks for cargo vessels.

Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance (2016)
Conference Proceeding
Gu, C., Effah, F. B., Castellazzi, A., Watson, A. J., & Wheeler, P. (2016). Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance. In 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe) (1-10). https://doi.org/10.1109/EPE.2016.7695675

Current-limiting strategies for solid-state circuit breaker (SSCB) without adding impedance is introduced in this paper. With the current limitation of novel phase-shifting method, the advantages are simple hardware structure, relatively low cost, no... Read More about Novel current-limiting strategy for solid-state circuit breakers (SSCB) without additional impedance.

Extracting structure functions of power devices in induction motor drives (2016)
Conference Proceeding
Aliyu, A. M., & Castellazzi, A. (2016). Extracting structure functions of power devices in induction motor drives.

This paper proposes the extraction of structure function from power devices on-board induction motor drives. It puts forward the issues and methodology related to on-board measurement of the cooling curve and derivation of the structure function duri... Read More about Extracting structure functions of power devices in induction motor drives.