Title :
A study on the permanent magnet overhang effect in permanent magnetic actuator using 3-dimension equivalent magnetic circuit network method
Author :
Ho Kwon ; Kwon, Sam-Young ; Lee, Ju ; Choi, Seung-kil ; Baek, Soo-Hyun
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper presents the analysis of the permanent magnet overhang effect for permanent magnetic actuator. Generally, The overhang is often used to increase the force density in permanent magnet machineries. The overhang is especially profitable to reduce the volume after increasing the force density per volume when using the overhang effect of the permanent magnet. Therefore, 3D equivalent magnetic circuit network method (3D EMCNM) has been used in this paper. According to the plunger position, flux distribution per the overhang length, and the holding force are quantitatively compared. Furthermore, an appropriate length of the overhang has been proposed. To confirm the accuracy of the analysis method, the results of 2D FEM and 3D FEM are compared for the basic model.
Keywords :
electromagnetic actuators; equivalent circuits; finite element analysis; magnetic circuits; permanent magnet machines; demagnetization; finite element method; nonlinear analysis; permanent magnetic actuator; three-dimension equivalent magnetic circuit network method; Actuators; Coils; Electronic mail; Intelligent networks; Magnetic analysis; Magnetic circuits; Magnetic flux; Performance analysis; Permanent magnets; Switches;
Conference_Titel :
Electrical Machines and Systems, 2003. ICEMS 2003. Sixth International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
7-5062-6210-X