All Outputs (48)

Experimental study of thermal fracturing of Hot Dry Rock irradiated by moving laser beam: Temperature, efficiency and porosity (2020)
Journal Article

A new laser irradiation fracturing method is employed to crack the Hot Dry Rock (HDR) and variations of rock temperature, specific energy (SE) and modified specific energy (MSE), thermal damages and open porosity of granite samples caused by moving l... Read More about Experimental study of thermal fracturing of Hot Dry Rock irradiated by moving laser beam: Temperature, efficiency and porosity.

Analytical Model of Modular Spoke-Type Permanent Magnet Machines for In-Wheel Traction Applications (2020)
Journal Article

This paper proposes an analytical model of modular spoke-type permanent magnet (MSTPM) machines based on air-gap field modulation (AFM) theory. Firstly, a fundamental AFM model of open-circuit MSTPM machines is introduced. The open-circuit air-gap fi... Read More about Analytical Model of Modular Spoke-Type Permanent Magnet Machines for In-Wheel Traction Applications.

Thermal Model Approach to Multisector Three-Phase Electrical Machines (2020)
Journal Article

© 1982-2012 IEEE. Multisector machines reveal a high fault-tolerant capability, since failure events can be isolated by de-energizing the faulty sector, while the healthy ones contribute in delivering the required power. This article is focused on th... Read More about Thermal Model Approach to Multisector Three-Phase Electrical Machines.

Sensitivity Analysis of Machine Components Thermal Properties Effects on Winding Temperature (2019)
Conference Proceeding

This paper investigates the sensitivity analysis of winding temperature to key parameters in electrical machine thermal design. With a validated 3D thermal model based on an existing 75kW traction machine for an electric vehicle, the methodology of t... Read More about Sensitivity Analysis of Machine Components Thermal Properties Effects on Winding Temperature.

Reduction of Winding AC Losses by Accurate Conductor Placement in High Frequency Electrical Machines (2019)
Journal Article

© 1972-2012 IEEE. In the design of electrical machines, the increase in power density has become one of the main research themes. With most of the power loss in high power density electrical machines often being generated in the stator winding assemb... Read More about Reduction of Winding AC Losses by Accurate Conductor Placement in High Frequency Electrical Machines.

Equivalent Slot Thermal Conductivity and Back-iron Extension Effects on Machine Cooling (2019)
Conference Proceeding

Back-iron Extension (BIE) is an effective thermal management technique which reduces the winding temperatures by projecting part of the back iron into the center of slot, thereby shortening the heat transfer path between the coil and back iron. Based... Read More about Equivalent Slot Thermal Conductivity and Back-iron Extension Effects on Machine Cooling.

Designing an Advanced Electrical Motor for Propulsion of Electric Aircraft (2019)
Conference Proceeding

A prototype motor rated for 500 kW 3,000 rpm has been developed for aircraft electric propulsion. The design of the motor was optimized using a coupled parameter problem of electromagnetic, mechanical and thermal performances. A high power density of... Read More about Designing an Advanced Electrical Motor for Propulsion of Electric Aircraft.

Thermo-Mechanical Modelling of Bearing Chambers of a High-Speed Starter/Generator (2019)
Conference Proceeding

This paper describes the thermal-mechanical characterisation methodology for the bearing chambers of a high-speed (32,000 rpm) electrical starter/generator [1]; presenting a low cost analysis approach and design guideline for future machines. The met... Read More about Thermo-Mechanical Modelling of Bearing Chambers of a High-Speed Starter/Generator.

Dual-Rotor Permanent Magnet Motor for Electric Superbike (2019)
Conference Proceeding

The demand on high-performance electrical machines has significantly increased for aerospace and transportation industries in recent years. A racing electric motorbike is a suitable platform to validate and prove new concepts and machine topologies b... Read More about Dual-Rotor Permanent Magnet Motor for Electric Superbike.

Eddy Current Loss Control in High Speed PM Starter-Generator (2019)
Conference Proceeding

This paper highlights the advancement in high speed generation applications along with describing the state of the art in the machine design technologies enabling such an application uptake. Via the investigating on a 250kW high speed PM starter-gene... Read More about Eddy Current Loss Control in High Speed PM Starter-Generator.

Effective Thermal Conductivity Calculation and Measurement of Litz Wire based on the Porous Metal Materials Structure (2019)
Journal Article

Litz wires are employed in high-frequency electrical machines due to their advantages of reducing the ac losses, including minimizing the skin effect and the proximity effect. In order to improve the reliability of such machines, and enable accurate... Read More about Effective Thermal Conductivity Calculation and Measurement of Litz Wire based on the Porous Metal Materials Structure.

Numerical investigations of convective phenomena of oil impingement on end-windings (2019)
Journal Article

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer have been modelled, using computational fluid dynamics (CFD), to inform the d... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.

Back-Iron Extension Thermal Benefits for Electrical Machines With Concentrated Windings (2019)
Journal Article

Design Considerations of Fault-Tolerant Electromechanical Actuator Systems for More Electric Aircraft (MEA) (2018)
Conference Proceeding

This paper studies the concerns such as architecture and reliability in the deployment of electromechanical actuator (EMA) in the actuation system for more electric aircraft (MEA). First, the reliability of the actuation system architecture such as c... Read More about Design Considerations of Fault-Tolerant Electromechanical Actuator Systems for More Electric Aircraft (MEA).

A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft (2018)
Conference Proceeding

The power density of electrical machines required for more-electric and hybrid-electric aircraft has become a critical aspect and target of optimization. This paper looks at the development aspects of a multi-domain tool to aid for system-level optim... Read More about A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft.

Dynamic response of hybrid carbon fibre laminate beams under ballistic impact (2018)
Journal Article

This novel hybrid fibre composites combining stiff composites with soft composites are developed to improve the ballistic impact resistance of composite beams while maintaining good quasi-static loading bearing capacity. The ballistic impact performa... Read More about Dynamic response of hybrid carbon fibre laminate beams under ballistic impact.

The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft (2018)
Conference Proceeding

Maximizing the power density as well as efficiency are two of the main critical aspects for engineers who are designing electrical machines for aerospace applications. Iron losses have a significant impact on the total machine efficiency, thermal sta... Read More about The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft.

Development of aircraft electric starter-generator system based-on active rectification technology (2018)
Journal Article

More-electric aircraft (MEA) has become a dominant trend for modern aircraft. On-board MEA, many functions, which are conventionally driven by pneumatic and hydraulic power, are replaced with electrical subsystems. Starting aircraft engines with an e... Read More about Development of aircraft electric starter-generator system based-on active rectification technology.

A novel 24-slots14-poles fractional-slot concentrated winding topology with low space harmonics for electrical machines (2018)
Conference Proceeding

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.

Numerical investigations of convective phenomena of oil impingement on end-windings (2018)
Conference Proceeding

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer has been modelled, using computational fluid dynamics (CFD), to inform the de... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.