Results 61 to 70 of about 803 (181)

Magnetic Field Analysis of Multi‐Segment Modulated Pole Motors Based on the Air Gap Domain Multi‐Harmonic Method

IET Electric Power Applications, Volume 20, Issue 1, January/December 2026.
A subdomain analytical model for multi‐harmonic air‐gap subdomains is proposed to predict motor magnetic fields containing complex harmonic components. Theoretical analysis demonstrates that this model effectively reduces the matrix dimension during analytical computation, resulting in lower computational time costs for the same harmonic order while ...
Kun Wang, Yong Han
wiley   +1 more source

Research on Cogging Torque Reduction of Direct-Drive Type Dual-Rotor Radial Flux Permanent Magnet Synchronous Motor for Electric Propulsion Aircraft

Energies
The 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, Minglu Feng, Li Lei, Yingsan Geng, Jianhua Wang   +4 more
doaj   +1 more source

Analysis and Suppression of Spoke-Type Permanent Magnet Machines Cogging Torque with Different Conditions for Electric Vehicles

World Electric Vehicle Journal
Spoke-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
doaj   +1 more source

Design Solutions for Reducing the Cogging Torque of PMSM

Advances in Electrical and Computer Engineering, 2013
This paper analyzes design solutions able to reduce the Cogging Torque (CT) amplitude of Permanent Magnet Synchronous Machines (PMSMs). The common point of these solutions is the particular constructions of the stator magnetic core from two concentric steel lamination stacks that leads to a closed stator slots structure in the air-gap region.
TUDORACHE, T., MODREANU, M.
openaire   +2 more sources

Research on cogging torque reduction method for permanent magnet synchronous motor accounting for the magnetic pole edge effect

IET Electric Power Applications
Due 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, Yan Yan, Yiqiu Cheng, Liyan Guo, Tingna Shi   +4 more
doaj   +1 more source

Impact of Flux-Modulated Rotor Design on Special Flux Density Harmonics in PS-DSPM for Cogging Torque Minimization

Journal of Applied Science and Engineering
High cogging torque caused by a fluctuating magnetic flux distribution in the partitioned stator doubly salient permanent magnet machines (PS-DSPM), due to their double air gap design, limits their application despite excellent torque density ...
Wilaiphorn Nokklang, Pattasad Saengwong, Apirat Siritaratiwat, Warat Sriwannarat   +3 more
doaj   +1 more source

Effect of Manufacturing Tolerances and Magnetic Anisotropy of Electrical Steel on Surface-Mounted Permanent Magnet Synchronous Motor Cogging Torque

Mathematics
Minimizing 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, Yun-Jae Won, Soo-Hwan Park, Myung-Seop Lim   +3 more
doaj   +1 more source

Influence of Different Rotor Teeth Shapes on the Performance of Flux Switching Permanent Magnet Machines Used for Electric Vehicles

Energies, 2014
This paper investigated a 12-slot/11-pole flux switching permanent magnet (FSPM) machine used for electric vehicles (EVs). Five novel rotor teeth shapes are proposed and researched to reduce the cogging torque and torque ripple of the FSPM machine. These
Jing Zhao, Yashuang Yan, Bin Li, Xiangdong Liu, Zhen Chen   +4 more
doaj   +1 more source

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

Active cogging torque construction by the weld slot design in a positioning servo system

IET Electric Power Applications
The cogging torque is usually considered as an adverse effect of the PM machine servo system. This paper presents a new perspective that the cogging torque can be exploited in many practical situations as long as the speed ripple can be suppressed.
Minghao Tong, Yuhang Ding, Le Sun
doaj   +1 more source