Results 271 to 280 of about 4,766,046 (338)
Some of the next articles are maybe not open access.
A Novel Magnetic Gear: Toward a Higher Torque Density
IEEE Transactions on Magnetics, 2015Magnetic gears (MGs) are potential alternatives to conventional mechanical gear boxes. With high performance permanent magnets (PMs) and new topologies, today MGs are capable to transmit a torque that is competitive with mechanical gear boxes in a totally contact-free way.
X. Yin, P. Pfister, Y. Fang
openaire +1 more source
IEEE transactions on industrial electronics (1982. Print), 2020
In this article, to achieve high torque density and high power density of rotary ultrasonic motors (USMs), we develop a rod-shaped transducer operating in torsional/bending (T/B) modes and excite two elliptical motions on its bilateral ends to drive the ...
Jiang Wu, Y. Mizuno, Kentaro Nakamura
semanticscholar +1 more source
In this article, to achieve high torque density and high power density of rotary ultrasonic motors (USMs), we develop a rod-shaped transducer operating in torsional/bending (T/B) modes and excite two elliptical motions on its bilateral ends to drive the ...
Jiang Wu, Y. Mizuno, Kentaro Nakamura
semanticscholar +1 more source
An improved torque density Modulated Pole Machine for low speed high torque applications
6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), 2012This paper presents a new topology for three-phase Modulated Pole Machines. This new topology the “Combined Phase Modulated Pole Machine” is analysed and compared to the more traditional technology of three separate single phase units stacked axially with a separation between phases.
J.G. Washington +8 more
openaire +1 more source
Maximum-torque-per-ampere control of high torque-density multiphase drives based on induction motors
2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012It is known that the torque density of multiphase motors can be increased by superimposing high-order spatial harmonics to the fundamental one in the air-gap magnetic field. However, the problem of maximizing the torque capability is still controversial, since the results depend on the constraints that have been considered.
ZARRI, LUCA +4 more
openaire +2 more sources
IEEE transactions on energy conversion, 2020
This paper proposes a novel Bi-Magnet machine design concept in which ferrite and rare earth magnet materials are both utilized for torque production.
Zhentao S. Du, T. Lipo
semanticscholar +1 more source
This paper proposes a novel Bi-Magnet machine design concept in which ferrite and rare earth magnet materials are both utilized for torque production.
Zhentao S. Du, T. Lipo
semanticscholar +1 more source
Magnetic-geared motors with high transmission torque density
COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2015Purpose – Early magnetic-geared motors have a high transmission torque density. However, the torque due to the coil is low because the permanent magnets in the stator become a large magnetic resistance when the current is applied to the coil.
Noboru Niguchi, Katsuhiro Hirata
openaire +1 more source
IEEE transactions on industrial electronics (1982. Print), 2020
In this article, a current profiling technique is proposed for the torque density enhancement in switched reluctance machines (SRMs). The novel current profile is initially developed from the harmonic current injection method and is then modified into a ...
Liren Huang +5 more
semanticscholar +1 more source
In this article, a current profiling technique is proposed for the torque density enhancement in switched reluctance machines (SRMs). The novel current profile is initially developed from the harmonic current injection method and is then modified into a ...
Liren Huang +5 more
semanticscholar +1 more source
High Power/Torque-Density Devices
2020Mechanical power transmission and handling devices are evaluated according to their power density, or else their torque density if it is not the power that is the issue of primary concern. The combination of high power or torque density with good energy efficiency may collectively be termed high-performance density.
openaire +1 more source
Energy-Efficient MRF-Clutch With Optimized Torque Density
Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation, 2013The viscous losses at high rotational speeds in idle mode represent a major drawback for an energy-efficient operation of MRF brakes and clutches. In this paper, an innovative concept is presented that allows a complete torque-free idle mode of the mentioned actuators by the use of a MR-fluid control.
Dirk Güth +2 more
openaire +1 more source
High torque density PM motor for racing applications
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017Referring to a 4-wheel drive Formula Student Electric vehicle, a fractional-slot synchronous permanent magnet machine has been designed. Torque density has been improved adopting outer rotor topology and lightweight materials. An ironless rotor with PMs placed in an Halbach array configuration allows reduced rotor inertia to be obtained.
Munaro M., Bianchi N., Meneghetti G.
openaire +1 more source