All Outputs (92)

Dual-Pulse Mode Control of a High-Speed Doubly Salient Electromagnetic Machine for Loss Reduction and Speed Range Extension (2019)
Journal Article

In this paper, a dual-pulse mode control of a high-speed doubly salient electromagnetic machine (DSEM) for efficiency improvement over a wide speed range is investigated and implemented. The dual-pulse mode control method and operation principle are... Read More about Dual-Pulse Mode Control of a High-Speed Doubly Salient Electromagnetic Machine for Loss Reduction and Speed Range Extension.

Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator (2019)
Journal Article

This paper presents a comprehensive study on the variation laws of electromagnetic torque (EMT) under static air-gap eccentricity (SAGE) conditions in synchronous generators. Different from other studies, this paper focuses on not only the impact of... Read More about Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator.

Comparative study on two modular spoke-type PM machines for in-wheel traction applications (2019)
Journal Article

This paper focuses on the comparative analysis of modular spoke-type permanent magnet machines with two magnetization modes, which are referred to as M-I and M-II types. The analytical models of the proposed machines are built based on the simple mag... Read More about Comparative study on two modular spoke-type PM machines for in-wheel traction applications.

Challenges of the optimization of a high-speed induction machine for naval applications (2019)
Journal Article

In several industrial sectors, induction machines are being replaced with permanent magnet based alternatives, owing to the potential for higher power density and efficiency. However, high-speed applications feature a wide flux-weakening region, wher... Read More about Challenges of the optimization of a high-speed induction machine for naval applications.

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.

Optimized Sizing of IPM Machines for Automotive Traction Application (2019)
Conference Proceeding

This paper presents the implementation of an electrical machine design tool including its overall architecture. The tool is flexible and can be employed for the sizing of any permanent magnet synchronous machine. The case study considered in this wor... Read More about Optimized Sizing of IPM Machines for Automotive Traction Application.

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.

Flux-Density Harmonics Analysis of Switched-Flux Permanent Magnet Machines (2019)
Journal Article

By developing a simple permeance-magnetomotive force (MMF) model of switched-flux permanent magnet (SFPM) machines, the air-gap flux density produced by both PMs and armature current can be derived, in which harmonics with the same order and rotation... Read More about Flux-Density Harmonics Analysis of Switched-Flux Permanent Magnet Machines.

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.

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

The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines (2019)
Journal Article

The main purpose of this paper is to investigate the influence of winding location on back electromotive force (EMF) and armature inductance in flux-switching permanent-magnet (FSPM) machines. To obtain an analytical solution, a double-stator-pitch m... Read More about The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines.

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.

Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft (2018)
Conference Proceeding

The generation performance of the switched reluctance machine (SRM)-based starter/generator (S/G) and the doubly salient electromagnetic machine (DSEM)-based S/G is analyzed and compared in this paper. The topologies, operation principles of the doub... Read More about Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft.

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.

Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi-sector permanent magnet machines (2018)
Journal Article

Two different approaches to characterize the torque and radial force production in a Bearingless Multi-Sector Permanent Magnet (BMSPM) machine are presented in this work. The first method consists of modelling the motor in terms of torque and force p... Read More about Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi-sector permanent magnet machines.

A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve (2017)
Conference Proceeding

This paper proposes a semi-flooded cooling concept for a high speed machine design. The electrical machine considered is for an aircraft starter-generator system where power density and efficiency are crucial. In order to achieve the high power densi... Read More about A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve.

Multi-domain optimization of high power-density PM electrical machines for system architecture selection (2017)
Journal Article

The power density of electrical machines for transport applications has become a critical aspect and target of optimization. This paper looks at the development of an intelligent, rapid, flexible, and multidomain tool to aid for system-level optimiza... Read More about Multi-domain optimization of high power-density PM electrical machines for system architecture selection.

Thermal investigation on HSPM with new alloy sleeve (2017)
Conference Proceeding

This paper presents a developed copper-iron alloy which made as the rotor sleeve in a high speed permanent magnetic machine (HSPMG), whist investigating its benefits in improve machine thermal performance. The features of the new alloy is experimenta... Read More about Thermal investigation on HSPM with new alloy sleeve.

Holistic electrical machine optimization for system integration (2017)
Conference Proceeding

The power density of electrical machines required for transport applications 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 optimization of electrica... Read More about Holistic electrical machine optimization for system integration.

Design and implementation of a loss optimization control for electric vehicle in-wheel permanent-magnet synchronous motor direct drive system (2017)
Journal Article

As a main driving force of electric vehicles (EVs), the losses of in-wheel permanent-magnet synchronous motor (PMSM) direct drive system can seriously affect the energy consumption of EVs. This paper proposes a loss optimization control strategy for... Read More about Design and implementation of a loss optimization control for electric vehicle in-wheel permanent-magnet synchronous motor direct drive system.