All Outputs (343)

Sizing, design, and modelling of aerospace electric drive system with long feeder cables (2019)
Conference Proceeding

The aviation industry is tending towards more electric aircraft, replacing conventionally pneumatic, hydraulic, and mechanical systems with electrical solutions. The electrification of actuators is motivated by increased efficiency, reduced maintenan... Read More about Sizing, design, and modelling of aerospace electric drive system with long feeder cables.

Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault (2019)
Conference Proceeding

© 2019 IEEE. Permanent magnet synchronous machines (PMSMs)employing the dual three-phase winding represent a suitable solution for complying with the reliability requirements typically needed in safety-critical applications. Their inherent fault-tole... Read More about Braking torque compensation strategy and thermal behavior of a dual three-phase winding PMSM during short-circuit fault.

A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability (2019)
Journal Article

The rotor structure of synchronous reluctance machines (SynRel) is conventionally retained mechanically by iron ribs. In this paper a novel structure for high speed synchronous reluctance rotor is presented. The novelty of this work is the proof of a... Read More about A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability.

Thermal overload and insulation aging of short duty cycle, aerospace motors (2019)
Journal Article

Electrical machines for transportation applications need to be highly reliable, particularly if they drive safety-critical systems. At the same time, another main requirement is represented by the significant torque density, especially for aerospace,... Read More about Thermal overload and insulation aging of short duty cycle, aerospace motors.

Control Strategy for Five-Phase Dual-Stator Winding Induction Starter/Generator System (2019)
Journal Article

This paper presents an integrated control strategy for a starter/generator (S/G) system based on five-phase dual-stator winding induction machine (FPDWIM). The FPDWIM has a cage-type rotor and two sets of stator windings. One is a five-phase control... Read More about Control Strategy for Five-Phase Dual-Stator Winding Induction Starter/Generator System.

Coupling calculation and analysis of three-dimensional temperature and fluid field for high-power high-speed permanent magnet machine (2019)
Journal Article

© The Institution of Engineering and Technology 2019. In order to accurately estimate the temperature rise for high-power high-speed permanent magnet machines (HSPMMs), a novel temperature calculation method considering the non-linear variation of ma... Read More about Coupling calculation and analysis of three-dimensional temperature and fluid field for high-power high-speed permanent magnet machine.

A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives (2019)
Journal Article

© 1986-2012 IEEE. Sensorless machine drives in vehicle traction frequently experience rapidly-changing load disturbance and demand fast speed dynamics. Without gain-scheduling or compensation, conventional quadrature phase-locked-loop (Q-PLL) is unab... Read More about A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives.

Active Thermal Control for Power Converters in Modular Winding Permanent Magnet Synchronous Motor (2019)
Conference Proceeding

To increase the reliability and reduce the torque ripple, modular winding structure has been employed in the Permanent Magnet Synchronous Motors (PMSMs). However, the reliability of the motor system depends on the lifetime of the power semiconductor... Read More about Active Thermal Control for Power Converters in Modular Winding Permanent Magnet Synchronous Motor.

Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines (2019)
Conference Proceeding

© 2019 IEEE. In recent years, electrical machines are employed in an ever-increasing number of safety-critical applications, which require high power density, along with a demanding level of reliability and/or fault-tolerance capability. Multi-phase... Read More about Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines.

An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation (2019)
Journal Article

This paper deals with the high accurate current set-points solution for Interior Permanent-Magnet Synchronous Motors (IPMSM) in wide-speed range applications. Considering voltage and current constraints, the operating regions can be divided into Maxi... Read More about An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation.

Asymmetrical Flux Density Distribution in Stator Teeth of Surface Permanent Magnet Machines (2019)
Conference Proceeding

This work is showing in detail the flux density behaviour in the stator teeth of a synchronous machine. A 3-phase Surface Permanent Magnet (SPM) motor is considered. These motors are widely employed in applications where high efficiency and power den... Read More about Asymmetrical Flux Density Distribution in Stator Teeth of Surface Permanent Magnet Machines.

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.

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.

Novel Motor-Shaped Rotational Inductor for Motor Drive Applications (2019)
Journal Article

This paper presents a validation of the novel motor-shaped rotational inductor. To validate the concept, 12 slots 2 poles rotational inductor is tested at different supply frequencies and rotor speeds. Experimental results have shown that the iron lo... Read More about Novel Motor-Shaped Rotational Inductor for Motor Drive Applications.

Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator (2019)
Journal Article

The more electric aircraft concept aims to improve the fuel consumption, the weight, and both the maintenance and operating costs of the aircraft, by promoting the use of electric power in actuation systems. According to this scenario, electromechani... Read More about Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator.

Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation (2019)
Journal Article

This study proposes a modified modulated model predictive control (MMPC) scheme to control an open-end winding induction motor drive using an asymmetric source dual inverter with one floating bridge. The control algorithm uses a modulation algorithm... Read More about Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation.

High Torque Density Torque Motor With Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve (2019)
Journal Article

Torque motor is one key component that directly influences the dynamic performance of jet pipe servo valve in aircraft. In this paper, a novel torque motor with hybrid-magnetization pole arrays is proposed. By changing the magnetization patterns of p... Read More about High Torque Density Torque Motor With Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve.

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