All Outputs (175)

An Integrated Method for Three-Phase AC Excitation and High-Frequency Voltage Signal Injection for Sensorless Starting of Aircraft Starter/Generator (2018)
Journal Article

© 1982-2012 IEEE. This paper proposes an integrated method of three-phase ac excitation and high-frequency voltage signal injection (HFVSI) for sensorless controlled starting of brushless synchronous machines (BSM) used as starter/generator in variab... Read More about An Integrated Method for Three-Phase AC Excitation and High-Frequency Voltage Signal Injection for Sensorless Starting of Aircraft Starter/Generator.

Thermal analysis of fault-tolerant electrical machines for aerospace actuators (2018)
Journal Article

For safety critical applications, electrical machines need to satisfy several constraints, in order to be considered fault-tolerant. In fact, if specific design choices and appropriate control strategies are embraced, fault-tolerant machines can oper... Read More about Thermal analysis of fault-tolerant electrical machines for aerospace actuators.

Improved thermal management and analysis for stator end-windings of electrical machines (2018)
Journal Article

In electrical machine design, thermal management plays a key role in improving performance and reducing size. End-windings are commonly identified as the machine hot-spot. Hence, lowering and predicting end-windings temperature are crucial tasks in t... Read More about Improved thermal management and analysis for stator end-windings of electrical machines.

Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines (2018)
Journal Article

This paper presents a droop-based dis- tributed control strategy for multi-three-phase machines that provides augmented controllability during power shar- ing transients. The proposed strategy is able to mitigate the mutual interactions among differe... Read More about Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines.

A methodology to remove stator skew in small-medium size synchronous generators via innovative damper cage designs (2018)
Journal Article

This paper proposes and investigates an innovative methodology that can have a significant impact on the market potential of wound field, small-medium size synchronous generators. The technique proposed here is aimed at removing the need for the trad... Read More about A methodology to remove stator skew in small-medium size synchronous generators via innovative damper cage designs.

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.

Response to Discussion of “A modular speed-drooped system for high reliability integrated modular motor drives” (2018)
Journal Article

Dielectric breakdown of alumina thin films produced by pulsed direct current magnetron sputtering (2018)
Journal Article

Alumina films (~2 μm thick) were deposited with a mixed Cu/Al interlayer onto copper. Direct current (DC)/Pulsed DC (PDC) magnetron sputtering techniques were independently compared for reactive alumina sputtering. In DC sputtered films, elemental al... Read More about Dielectric breakdown of alumina thin films produced by pulsed direct current magnetron sputtering.

Performance Improvement of Bearingless Multisector PMSM With Optimal Robust Position Control (2018)
Journal Article

© 2018 IEEE. Bearingless machines are relatively new devices that consent to suspend and spin the rotor at the same time. They commonly rely on two independent sets of three-phase windings to achieve a decoupled torque and suspension force control. I... Read More about Performance Improvement of Bearingless Multisector PMSM With Optimal Robust Position Control.

Eccentric reluctance and permanent magnets synchronous machines comparison (2018)
Journal Article

This paper deals with a comparative study between reluctance (REL), permanent magnet assisted reluctance (PMAREL), and surface mounted permanent magnet synchronous machines with rotor eccentricity. Static, dynamic, and combined eccentricity cases are... Read More about Eccentric reluctance and permanent magnets synchronous machines comparison.

Multi-Physics and Multi-Objective Optimization of a High Speed PMSM for High Performance Applications (2018)
Journal Article

© 1965-2012 IEEE. High-speed permanent magnet synchronous machine (PMSM) can provide high power density and high efficiency, which is often highly desirable in high performance applications. A multi-physics optimization program based on the multi-obj... Read More about Multi-Physics and Multi-Objective Optimization of a High Speed PMSM for High Performance Applications.

Power quality improvement of synchronous generators using an active power filter (2018)
Journal Article

Active power filters (APF) are used to improve power quality and are commonly connected in parallel with the load at the point of common coupling (PCC). They are used to compensate for harmonics from nonlinear loads, for reactive power compensation a... Read More about Power quality improvement of synchronous generators using an active power filter.

Design and losses analysis of a high power density machine for flooded pump applications (2018)
Journal Article

This paper describes the design process of a 10 kW 19000 rpm high power density surface mounted permanent magnet synchronous machine for a directly coupled pump application. In order to meet the required specifications, a compact machine, with coolin... Read More about Design and losses analysis of a high power density machine for flooded pump applications.

Synchronous reluctance motor iron losses: considering machine non-linearity at MTPA, FW, and MTPV operating conditions (2018)
Journal Article

Synchronous reluctance machine has high flux density fluctuations in the iron due to the high harmonics results from the rotor anisotropy. Thus, an accurate computation of the iron losses is of paramount importance, especially during the design stage... Read More about Synchronous reluctance motor iron losses: considering machine non-linearity at MTPA, FW, and MTPV operating conditions.

Considerations on the effects that core material machining has on an electrical machine's performance (2018)
Journal Article

An often-overlooked aspect during the development process of electrical machines, is the validity and accuracy of the machine material properties being used at the design stage. Designers usually consider the data provided by the materials supplier,... Read More about Considerations on the effects that core material machining has on an electrical machine's performance.

Design of a stator for a high-speed turbo-generator with fixed permanent magnet rotor radius and volt-ampere constraints (2018)
Journal Article

This paper investigates high-speed surface PM machine design for portable turbo-generator applications. The rotor radius is fixed to achieve certain optimal characteristics of the magnet retention mechanism. The basis of this paper is to design and s... Read More about Design of a stator for a high-speed turbo-generator with fixed permanent magnet rotor radius and volt-ampere constraints.

Thermal analysis of fault-tolerant electrical machines for more electric aircraft applications (2018)
Journal Article

For safety critical applications, electrical machines need to satisfy several constraints, in order to be considered fault-tolerant. In fact, if specific design choices and appropriate control strategies are adopted, fault-tolerant machines can opera... Read More about Thermal analysis of fault-tolerant electrical machines for more electric aircraft applications.

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.

Magnetic field and torque output of packaged hydraulic torque motor (2018)
Journal Article

Hydraulic torque motors are one key component in electro-hydraulic servo valves that convert the electrical signal into mechanical motions. The systematic characteristics analysis of the hydraulic torque motor has not been found in the previous resea... Read More about Magnetic field and torque output of packaged hydraulic torque motor.

Radial force control of multi-sector permanent magnet machines for vibration suppression (2017)
Journal Article

Radial force control in electrical machines has been widely investigated for a variety of bearingless machines, as well as for the conventional structures featuring mechanical bearings. This paper takes advantage of the spatial distribution of the wi... Read More about Radial force control of multi-sector permanent magnet machines for vibration suppression.