All Outputs (343)

Magnetically geared induction machines (2015)
Journal Article

A wound-rotor induction machine is artfully coupled to a magnetic gear to achieve a high-torque-density drive system called magnetically geared induction machine (MaGIM). The high-speed rotor of MaGIM is common to both the machine and gear sides. A r... Read More about Magnetically geared induction machines.

Demagnetisation analysis for Halbach array configurations in electrical machines (2015)
Journal Article

This paper proposes and investigates an analytical method for assessing the risk of potential, irreversible demagnetisation in the PMs of electrical machines, equipped with n-stages, Halbach arrays. The higher risk of demagnetisation, synonymous with... Read More about Demagnetisation analysis for Halbach array configurations in electrical machines.

Analysis and design of a magnetically levitated planar motor with novel multilayer windings (2015)
Journal Article

This paper proposes a novel permanent magnet planar motor with moving multilayer orthogonal overlapping windings. This novel motor topology can achieve a five-degrees-of-freedom drive using two sets of x-direction windings and two sets of y-direction... Read More about Analysis and design of a magnetically levitated planar motor with novel multilayer windings.

Permanent magnet machine design trade-offs to achieve sensorless control at high load (2015)
Journal Article

Purpose The purpose of this paper is to introduce a new design optimization technique for a surface mounted permanent magnet (SMPM) machine to increase sensorless performance at high loadings by compromising with torque capability. Design/meth... Read More about Permanent magnet machine design trade-offs to achieve sensorless control at high load.

Development of an aircraft wheel actuator for green taxiing (2014)
Conference Proceeding

In this paper, the design and construction aspects of a wheel actuator to be used for aircraft taxiing on the ground and which will be located in the main landing gear are addressed. The main challenges with the application are the high torque densit... Read More about Development of an aircraft wheel actuator for green taxiing.

Automatic design of Synchronous Reluctance motors focusing on barrier shape optimization (2014)
Journal Article

The automated design of Synchronous Reluctance motors based on Multi-Objective, Genetic Optimization and Finite Element Analysis is considered in this paper. Three types of barrier shapes are considered, all described by an effective, limited set of... Read More about Automatic design of Synchronous Reluctance motors focusing on barrier shape optimization.

Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator (2014)
Journal Article

A 30kVA, 96000rpm, air cooled high-speed permanent magnetic generator (HSPMG) is investigated in this paper. Considering effects on both the magnetic circuit and heat transfer paths comprehensively, the stator slot notch in this HSPMG is optimized. F... Read More about Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator.

Design of synchronous reluctance motors with multiobjective optimization algorithms (2014)
Journal Article

The automatic design of Synchronous Reluctance (SyR) machines is considered in this paper by means of Finite Element Analysis and Multi-Objective Optimization Algorithms (MOOA). The research focuses on the design of the rotor geometry which is the ke... Read More about Design of synchronous reluctance motors with multiobjective optimization algorithms.

Implementation of a multi-level Power Electronic Inverter library in Modelica (2014)
Conference Proceeding

This paper presents a newly developed Power Electronic Inverter library in Modelica. The library utilises a multi-level approach with increasing model complexity at progressively higher levels. All levels are fully interchangeable so as to provide a... Read More about Implementation of a multi-level Power Electronic Inverter library in Modelica.

Self-commissioning of interior permanent- magnet synchronous motor drives with high-frequency current injection (2014)
Journal Article

In this paper, a simple and robust method for parameter estimation at rotor standstill is presented for interior permanent magnet (IPM) synchronous machines. The estimated parameters are the stator resistance through dc test, the dq inductances using... Read More about Self-commissioning of interior permanent- magnet synchronous motor drives with high-frequency current injection.

Design of a high-force-density tubular motor (2014)
Journal Article

This paper deals with the design, construction and experimental verification of a high force density, tubular, linear, permanent magnet motor, driven from a high power density matrix converter for an aerospace application. The work also describes the... Read More about Design of a high-force-density tubular motor.

Special section on high speed electrical machines and drives (2013)
Journal Article

High-speed electrical machines: technologies, trends and developments (2013)
Journal Article

This paper reviews the current technologies used in high speed electrical machines, through an extensive survey of different topologies developed and built in industry as well as in academia for several applications. Developments in materials and com... Read More about High-speed electrical machines: technologies, trends and developments.

A high-speed permanent-magnet machine for fault-tolerant drivetrains (2013)
Journal Article

This paper details the design considerations of a permanent magnet (PM), three phase, high speed, synchronous machine for fault tolerant operation. A multidisciplinary approach to the optimal design of the machine is adopted targeted at minimising th... Read More about A high-speed permanent-magnet machine for fault-tolerant drivetrains.

Induction motors versus permanent magnet actuators for aerospace applications (2013)
Journal Article

This paper introduces a comparative study on the design of aerospace actuators concerning Induction Motor (IM) and Permanent Magnet Motor (PMM) technologies. In the analysis undertaken, the two candidate configurations are evaluated in terms of both... Read More about Induction motors versus permanent magnet actuators for aerospace applications.

Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines (2013)
Journal Article

This paper investigates the behavior of a vector-controlled fault-tolerant permanent magnet motor drive system adopting a vertically placed strip winding (VSW) which can limit interturn short-circuit (SC) fault current to its rated value regardless o... Read More about Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines.

Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management (2013)
Journal Article

This study is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Owing to the temperature dependent resistive losses in the machine's windings, any improvement in cooling provides a direct redu... Read More about Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management.

CFD modelling of an entire synchronous generator for improved thermal management (2012)
Conference Proceeding

This paper is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Due to the temperature dependent resistive losses in the machine's windings any improvement in cooling provides a direct reducti... Read More about CFD modelling of an entire synchronous generator for improved thermal management.

A thermal improvement technique for phase windings of electrical machines (2011)
Journal Article

In electrical machines, a higher torque/force density can usually be achieved by increasing the current density in the windings. However, the resulting increase in copper losses leads to higher temperatures in the coils, especially in the centre of t... Read More about A thermal improvement technique for phase windings of electrical machines.

An analytical and genetic-algorithm-based design tool for brushless excitation systems of low-medium rated synchronous generators
Conference Proceeding

The sizing procedures adopted for the everyday design of electrical machines are well known and consolidated. However, for brushless exciters of field wound, synchronous generators, there is significant room for improvement as the impact of the diode... Read More about An analytical and genetic-algorithm-based design tool for brushless excitation systems of low-medium rated synchronous generators.