Title :
Design Optimization of Permanent Magnet Actuator Using Multi-Phase Level-Set Model
Author :
Lim, Sunghoon ; Min, Seungjae
Author_Institution :
Dept. of Automotive Eng., Hanyang Univ., Seoul, South Korea
fDate :
4/1/2012 12:00:00 AM
Abstract :
In this paper, a new approach to achieve the optimal design of a permanent magnetic actuator for maximizing the magnetic performance is presented. To consider three different materials such as permanent magnet, ferromagnetic material and air in design domain, the multi-phase level-set model representing two level set functions is employed. Each material´s property is calculated in terms of relative magnetic reluctivity and remanent flux density for magnetostatic analysis. The optimization problem is formulated by the objective function for satisfying all of actuating conditions and the volume constraints of each material. Two level-set functions are updated with the time evolutional equation and the respective design sensitivities until the convergence conditions are satisfied. The structural design example of a permanent magnet actuator for a vacuum circuit breaker is performed to demonstrate the effectiveness of the presented method and an optimal configuration is obtained.
Keywords :
magnetic actuators; magnetic flux; magnetostatic wave devices; optimisation; permanent magnets; remanence; vacuum circuit breakers; convergence conditions; design optimization; magnetic reluctivity; magnetostatic analysis; multiphase level-set model; permanent magnet actuator; remanent flux density; structural design; time evolutional equation; vacuum circuit breaker; volume constraints; Frequency modulation; Magnetic cores; Magnetic domains; Magnetic separation; Magnetostatics; Materials; Optimization; Level-set based design optimization; multi-material design; multi-phase level-set model; permanent magnet actuator;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2173318