Abstract
The paper presents a calculation effort efficient analytical formula for the prediction of the static unbalanced magnetic pull (UMP) in synchronous surface mounted permanent magnet (PM) electrical machines. The derived formula predicts the UMP making use only of the magnet remanent flux density, rotor eccentricity, and geometrical parameters of the motor. The formula was discussed and compared with measurement data. Except of the UMP the eccentricity-dependent magnetic stiffness coefficient has been derived and presented in figures as a function of the ratio of the airgap length to the magnet height. It could be showed that in the case of examined PM machines, the magnetic stiffness coefficient varies quite moderate with the rotor eccentricity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
