All Outputs (343)

Comparison of AC Losses in the Winding of Electrical Machines with Fixed Strands Positions, Fixed Conductor Shapes and Random Winding (2022)
Journal Article

In high performance electric machines, the increase of fundamental frequency leads to additional losses in the winding due to parasitic effects such as the associated skin and proximity effects. In the first part, this paper presents an investigation... Read More about Comparison of AC Losses in the Winding of Electrical Machines with Fixed Strands Positions, Fixed Conductor Shapes and Random Winding.

Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines (2022)
Conference Proceeding

From the existing literature, the open circuit field due to different magnetisations of the rotor magnets is known. This includes field due to parallel, radial and Halbach magnetisation. This paper presents the generalised analytical model to represe... Read More about Analytical Model for the Open Circuit Field due to Different Magnetization Patterns of the rotor in the Slotless Machines.

High Speed Permanent Magnet Assisted Synchronous Reluctance Machines - Part I: A General Design Approach (2022)
Journal Article

The design of synchronous reluctance machines with and without permanent magnets assistance constitutes a challenging engineering task due to the numerous design variables and performance indexes to be considered. The design complexity increases even... Read More about High Speed Permanent Magnet Assisted Synchronous Reluctance Machines - Part I: A General Design Approach.

High Speed Permanent Magnet Assisted Synchronous Reluctance Machine - Part II: Performance Boundaries (2022)
Journal Article

The insertion of permanent magnets (PMs) within the rotor slots of Synchronous Reluctance Machines (SyRM) is the most common design strategy used to increase significantly their performance. In this paper it is shown how a permanent magnet assisted s... Read More about High Speed Permanent Magnet Assisted Synchronous Reluctance Machine - Part II: Performance Boundaries.

Mild hybridisation of turboprop engine with high-power-density integrated electric drives (2022)
Journal Article

This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project... Read More about Mild hybridisation of turboprop engine with high-power-density integrated electric drives.

Impact of Stator Segmentation on the Performance of Aerospace Propulsion Machines (2022)
Journal Article

Electric machines offering a high power density are required for aerospace applications. Soft magnetic material with a high saturation flux density is one of the key component which is required to realize these power density targets. The need for a h... Read More about Impact of Stator Segmentation on the Performance of Aerospace Propulsion Machines.

Design Optimization of Modular Permanent Magnet Machine with Triple Three-Phase for Aircraft Starter Generator (2022)
Journal Article

Permanent magnet (PM) electrical machine has far-reaching impacts in aviation electrification due to the continuous development in high power density and high efficiency electrical drives. The primary barrier to acceptance of permanent magnet machine... Read More about Design Optimization of Modular Permanent Magnet Machine with Triple Three-Phase for Aircraft Starter Generator.

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles (2022)
Journal Article

High-speed permanent magnet (PM) machines have been recognized as a popular choice for plug-in hybrid electric vehicles (PHEVs). Although high-speed operation can enhance the machine power density, more rotor eddy current losses can be expected. Thos... Read More about Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles.

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison (2022)
Journal Article

In the last decade, the trend toward higher efficiency and higher torque density electrical machines (EMs) without permanent magnets (PMs) for the industrial sector has rapidly increased. This work discusses the latest research and industrial advance... Read More about Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison.

A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors (2022)
Journal Article

The rapidly increasing demand on power density levels of electric vehicle (EV) drive systems is pushing the boundaries of traction motor performance. Hairpin windings are becoming a popular option for EV motors due to their reduced DC losses and impr... Read More about A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors.

Torque Limiters for Aerospace Actuator Application (2022)
Journal Article

Safety and reliability of electrical actuators are essential for success of all electric and more electric aircrafts (MEA). Torque limiters improve the reliability of electromechanical actuators (EMA) by restricting the amount of force experienced by... Read More about Torque Limiters for Aerospace Actuator Application.

Rotor Slot Design of Squirrel Cage Induction Motors with Improved Rated Efficiency and Starting Capability (2022)
Journal Article

Among the electro-mechanical devices transforming energy from electrical to mechanical, the squirrel cage induction motor can be surely considered a workhorse of the industry due to its robustness, low cost and good performance when directly fed by t... Read More about Rotor Slot Design of Squirrel Cage Induction Motors with Improved Rated Efficiency and Starting Capability.

Performance Entitlement by Using Novel High Strength Electrical Steels and Copper Alloys for High-Speed Laminated Rotor Induction Machines (2022)
Journal Article

The laminated rotor Induction Machine (IM), with its simple construction and manufacturing, robustness, ease of control and comparatively lower cost remains by far the most utilized electromechanical energy converter. At very high speeds, traditional... Read More about Performance Entitlement by Using Novel High Strength Electrical Steels and Copper Alloys for High-Speed Laminated Rotor Induction Machines.

Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies (2021)
Journal Article

With the increased necessity of a high power density and efficient system in aerospace and marine industries, integrated motor drives provide an excellent solution in the modern era. Therefore, a close structural and functional integration of passive... Read More about Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies.

Carbon Emission Analysis of Electrical Machines (2021)
Conference Proceeding

The industry places increased importance on carbon reduction. Many are focused on lowering the fuel consumption of electrical machines, however, carbon emissions from the acquisition of raw materials and the energy consumption of manufacturing proces... Read More about Carbon Emission Analysis of Electrical Machines.

Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine (2021)
Conference Proceeding

This paper presents a general multi-harmonics analytical model able to predict both torque and force behaviour of a multi-phase permanent magnet synchronous machine. This machine topology can be adopted in bearingless applications and in application... Read More about Modelling, Analysis and Design Considerations of Multi-Phase Bearingless Permanent Magnet Synchronous Machine.

Neural Network aided PMSM multi-objective design and optimization for more-electric aircraft applications (2021)
Journal Article

This study uses the Neural Network (NN) technique to optimize design of surface-mounted Permanent Magnet Synchronous Motors (PMSMs) for More-Electric Aircraft (MEA) applications. The key role of NN is to provide dedicated correction factors for the a... Read More about Neural Network aided PMSM multi-objective design and optimization for more-electric aircraft applications.

Femtocore: An Application Specific Processor for Vertically Integrated High Performance Real-Time Controls (2021)
Journal Article

In applications that require a high availability and high performance (for example aerospace),modular power electronics and multi-phase machines represent an advantageous choice. In this framework, a control system able to handle a high number of PWM... Read More about Femtocore: An Application Specific Processor for Vertically Integrated High Performance Real-Time Controls.

High-Speed Synchronous Reluctance Machines: Materials Selection and Performance Boundaries (2021)
Journal Article

This article presents a comprehensive comparative design exercise of synchronous reluctance (SyR) machines considering different soft magnetic materials and a wide range of speeds. First, a general design methodology able to consider all the conseque... Read More about High-Speed Synchronous Reluctance Machines: Materials Selection and Performance Boundaries.

Improved Thermal Modeling and Experimental Validation of Oil-Flooded High-Performance Machines with Slot-Channel Cooling (2021)
Journal Article

Thermal management is often considered a bottleneck in the pursuit of the next-generation electrical machines for electrified transportation with a step change in power density. Slot-channel cooling is considered to be an effective cooling technique,... Read More about Improved Thermal Modeling and Experimental Validation of Oil-Flooded High-Performance Machines with Slot-Channel Cooling.