All Outputs (408)

Single pulse short-circuit robustness and repetitive stress aging of GaN GITs (2018)
Conference Proceeding
Castellazzi, A., Fayyaz, A., Zhu, S., Oeder, T., & Pfost, M. (2018). Single pulse short-circuit robustness and repetitive stress aging of GaN GITs. In Proceedings of 2018 IEEE International Reliability Physics Symposium (IRPS), 11-15 March 2018, Burlingame, California, USA (4E.1-1-4E.1-10). https://doi.org/10.1109/IRPS.2018.8353593

Short-circuit withstand capability is a key requirement for semiconductor power devices in a number of strategic application domains, including traction, renewable energies and power distribution. Indeed, though clearly a non-intentional operational... Read More about Single pulse short-circuit robustness and repetitive stress aging of GaN GITs.

Novel silicon carbide integrated power module for EV application (2018)
Conference Proceeding
Mouawad, B., Espina, J., Li, J., Empringham, L., & Johnson, C. M. (2018). Novel silicon carbide integrated power module for EV application. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia (WiPDA Asia 2018), At Xi'an, Shaanxi

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.

Sizing guidelines for grid-connected decentralised energy storage systems: single house application (2018)
Conference Proceeding
Panagiotou, K., Klumpner, C., & Sumner, M. (2018). Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

Nowadays, the existing hierarchical, centrally controlled power grid faces new challenges due to the increase penetration of renewable sources, the need of implementing demand side management and the 2020 and 2050 environmental targets. A promising c... Read More about Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

New modulation scheme for bidirectional quasi z-source modular multilevel converters (2018)
Conference Proceeding
Khera, F., Klumpner, C., & Wheeler, P. (2018). New modulation scheme for bidirectional quasi z-source modular multilevel converters.

This paper proposes a dedicated modulation scheme for a bidirectional quasi Z-source modular multilevel converter (BqZS-MMC). The operation principle and a suitable PWM method are proposed. The relation between the modulation index and shoot-through... Read More about New modulation scheme for bidirectional quasi z-source modular multilevel converters.

Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter (2018)
Conference Proceeding
Diaz, M., Espinoza, M., Rojas, F., Wheeler, P., & Cardenas, R. (2018). Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter.

The Modular Multilevel Matrix Converter (M3C) is an ac-to-ac converter suitable for high-power applications. The control of this converter is complex, mainly when the frequencies of the ac systems connected to the ports of the converter are close or... Read More about Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter.

Experimental demonstration of an optimised PWM scheme for more even device electro-thermal stress in a 3-Level ANPC GaN inverter (2018)
Conference Proceeding
Zeng, Y., Gurpinar, E., Hussein, A., & Castellazzi, A. (2018). Experimental demonstration of an optimised PWM scheme for more even device electro-thermal stress in a 3-Level ANPC GaN inverter.

GaN device as one potential power electronics device has been gained much attention recently. One of the power conversion systems, ANPC inverter using GaN HEMT is potentially considered to be prospective usage of low loss and high efficiency. In this... Read More about Experimental demonstration of an optimised PWM scheme for more even device electro-thermal stress in a 3-Level ANPC GaN inverter.

Design and evaluation of an energy storage system for helicopters (2018)
Conference Proceeding
Klumpner, C., & Rashed, M. (2018). Design and evaluation of an energy storage system for helicopters.

This paper presents the design and evaluation of an energy storage system (ESS) for helicopters with the aim to recover the kinetic energy in the rotor available after landing and to be able to control the 270V dc bus voltage during load disturbances... Read More about Design and evaluation of an energy storage system for helicopters.

A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines (2018)
Conference Proceeding
Zhu, S., Cox, T., Xu, Z., & Gerada, C. (2018). A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines. In NA

This paper proposes a novel winding layout for the machines with fractional-slot concentrated windings (FSCW) using a stator shifting concept and non-overlapping windings, with which all the non-working harmonics will be completely cancelled or signi... Read More about A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines.

Next generation integrated drive: a novel thermal and electrical integration technique for high power density converters used in automotive drive systems (2018)
Conference Proceeding
Ahmadi, B., Espina, J., De Lillo, L., Abebe, R., Empringham, L., & Johnson, C. M. (2018). Next generation integrated drive: a novel thermal and electrical integration technique for high power density converters used in automotive drive systems.

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.

Static and dynamic TSEPs of SiC and GaN transistors (2018)
Conference Proceeding
Zhu, S., Fayyaz, A., & Castellazzi, A. (2018). Static and dynamic TSEPs of SiC and GaN transistors.

This paper investigates the static and dynamic temperature sensitive electrical parameters (TSEPs) for both SiC and GaN transistors. It is shown that both the qualitative and quantitative temperature characteristics of these parameters are various wh... Read More about Static and dynamic TSEPs of SiC and GaN transistors.

GaN HEMT gate-driver for achieving high power converter integration levels (2018)
Conference Proceeding
Wu, H., Garcia, J., & Castellazzi, A. (2018). GaN HEMT gate-driver for achieving high power converter integration levels.

This work proposes a solution for implementing an isolated gate driver for GaN HEMTs based on the previous topology for SiC power MOSFETs. The isolation of the gate driver is realised by the single transformer topology with double winding in the sec... Read More about GaN HEMT gate-driver for achieving high power converter integration levels.

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications (2018)
Conference Proceeding
Li, C., Yang, T., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. (2018). An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to... Read More about An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry (2018)
Conference Proceeding
La Rocca, S., Pickering, S., Eastwick, C. N., Gerada, C., & Rönnberg, K. (2018). Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

In this paper a typical small low voltage TEFC motor (output power ~10 kW) has been studied using computational fluid dynamics. The complexity of the end winding geometries, often consisting of several insulated copper strands bound together, provide... Read More about Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

Wide frequency range active damping of LCL-filtered grid connected converters (2018)
Conference Proceeding
Ghanem, A., Rashed, M., Sumner, M., El-Sayes, M., & Mansy, I. (2018). Wide frequency range active damping of LCL-filtered grid connected converters.

It can be challenging to guarantee the stability of grids with many converters with LCL filters connected due to the presence of multiple resonances within the system. This paper presents an active damping technique to mitigate multiple resonance eff... Read More about Wide frequency range active damping of LCL-filtered grid connected converters.

Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application (2018)
Conference Proceeding
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. (2018). Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

A design procedure for the Dual Active Bridge (DAB) converter is presented, which aims to optimized power density and computational effort. When designing a DAB, the selection of circuit design parameters such as switching frequency, leakage inductan... Read More about Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs (2018)
Conference Proceeding
Fares, A., Klumpner, C., & Sumner, M. (2018). Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs.

The overall performance of battery packs may be affected by imbalances between the series connected cells which is more likely in packs with high number of cells needed to provide a high voltage as needed for example in electric vehicles. In this cas... Read More about Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs.

A CFD and experimental investigation into a non-intrusive method for measuring cooling air mass flow rate through a synchronous generator (2018)
Conference Proceeding
Bersch, K., Connor, P. H., Eastwick, C. N., & Galea, M. (2018). A CFD and experimental investigation into a non-intrusive method for measuring cooling air mass flow rate through a synchronous generator.

This paper presents a detailed methodology for a non-intrusive measurement of cooling air mass flow rate that enables an overall machine evaluation. This approach enables the simultaneous measurement of air mass flow with shaft torque at differing op... Read More about A CFD and experimental investigation into a non-intrusive method for measuring cooling air mass flow rate through a synchronous generator.

Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter (2018)
Conference Proceeding
Chen, L., Tarisciotti, L., Costabeber, A., Gottardo, D., Zanchetta, P., & Wheeler, P. (2018). Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter.

The Dual-Active-Bridge is a well-established isolated, bidirectional DC/DC topology suitable for applications where high efficiency, galvanic isolation and large voltage conversion ratios are required. However, in low voltage high power cases, the ou... Read More about Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter.

Performance improvement of the CFM56-3 aircraft engine by electric power transfer (2018)
Conference Proceeding
Enalou, H. B., & Bozhko, S. (2018). Performance improvement of the CFM56-3 aircraft engine by electric power transfer. In Proceedings of 13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics (ETC13)

With the design trends towards the More Electric Engine (MEE) for the More Electric Aircraft (MEA), areas for novel technologies can be pinpointed for multi-spool engines, introducing remarkable improvements to push the boundaries of propulsion techn... Read More about Performance improvement of the CFM56-3 aircraft engine by electric power transfer.

Device loss model of a fully SiC based dual active bridge considering the effect of synchronous rectification and deadtime (2018)
Conference Proceeding
Wang, Z., & Castellazzi, A. (2018). Device loss model of a fully SiC based dual active bridge considering the effect of synchronous rectification and deadtime. In Proceedings - 2017 IEEE Southern Power Electronics Conference (SPEC) (1-7). https://doi.org/10.1109/SPEC.2017.8333662

It is becoming a great interest to employ SiC based power devices in dual active bridge (DAB) converter as an alternative to conventional Si-IGBT, due to its higher switching frequency potential, smaller switching losses as well as the capability to... Read More about Device loss model of a fully SiC based dual active bridge considering the effect of synchronous rectification and deadtime.