Results 111 to 120 of about 338,387 (269)
Reduction of Cogging Torque in Permanent Magnet Motors
Journal of the Magnetics Society of Japan, 2007 EPS (Electric Power Steering) enables an increase in automotive fuel efficiency by 3-5% and contributes to the protection of the environment by eliminating the oil medium used in conventional hydraulic power steering. For this reason a sharp increase in demand for EPS is expected.
openaire +2 more sources
Investigation of feeding devices and development of design considerations for a new feeder for micro-sheet forming [PDF]
, 2008 Recent review in micro-forming research and technological development suggested that the trend of the development is more focused on the manufacturing processes, machines and tooling, and efforts on the methods and systems for integrated precision ...
Brockett, Andrew +3 more
core
Reducing the cogging torque effects in hybrid stepper machines by means of resonant controllers [PDF]
, 2018 Permanent magnet machines are not free from the interaction between magnets and the stator and rotor slots, which causes an undesired disturbing torque.
Arias Pujol, Antoni +3 more
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MathematicsMinimizing cogging torque is critical for surface-mounted permanent magnet synchronous motors (SPMSMs) in high-precision applications, such as electric power steering and robotics. While skewing techniques are typically applied to mitigate cogging torque,
Jae-Hyun Kim +3 more
doaj +1 more source
Evaluation of the magnetization direction effects on ferrite PM brushless fractional machines [PDF]
, 2012 Permanent magnets are frequently adopted in small brushless machines for automotive applications. Normally anisotropic ferrites, but some research on bonded magnets is being carried on.
Ferraris, Luca +3 more
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EnergiesThe direct-drive type high-torque-density motor is one of the most promising solutions of electric propulsion for aircraft. The cogging torque of the direct-drive motor causes torque ripple, vibration, and noise, which seriously affect the stability and ...
Haomin Li +4 more
doaj +1 more source
Influence of skew and cross-coupling on flux-weakening performance of permanent-magnet brushless AC machines [PDF]
, 2009 A method is proposed for predicting the flux-weakening performance of permanent-magnet (PM) brushless ac machines accounting for skew and d-q axis cross-coupling.
Chen, J.T. +5 more
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World Electric Vehicle JournalSpoke-type permanent magnet (STPM) machines have high power density and low cost due to flux concentrated effect and high air-gap flux density, but they can cause high cogging torque and torque ripple.
Jinlin Huang, Chen Wang
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Comparative analysis of partitioned stator flux reversal PM machine and magnetically geared machine operating in Stator-PM and Rotor-PM modes [PDF]
, 2017 In this paper, the partitioned stator flux reversal permanent magnet (PM) (PS-FRPM) machine and the conventional magnetically geared (MG) machine operating in both stator-PM (SPM) and rotor-PM (RPM) modes are comparatively analyzed in terms of ...
Wu, Zhongze, Zhan, Hanlin, Zhu, Zi-Qiang
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IET Electric Power ApplicationsDue to the existence of the magnetic pole edge effect, the actual cogging torque of the existing segmented step skew motor does not reach the theoretical minimum.
Dong Yan +4 more
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