Optimal design method of 3-D nonlinear magnetic circuit by using magnetization integral equation method

Abstract

A new method €or determining the sizes of iron parts in a magnetic circuit, which preserves the requirement of prescribed flux densities, has been developed. In order to take into accounl the nonlinear rharacteristirs of' iron, the magnetization integral equation method is used in the analysis. The effectiveness of the method is examined by applying i t to the design of pole shape of an electromagnet.

Meshless Method Employing Magnetic Moment Method and Particle Method for Magnetic Fluid Motion Analysis

“…In this paper, the mesh-free method based on Weighted Least Square Method (WLSM) (12) is employed as discretization of Eqs. (1), (2), and (4).…”

“…In previous work, the new coupling meshless method to solve the mentioned problems is proposed (11) . This method is a coupling analysis method employing the particle method and the magnetic moment method (12) . The mesh and calculation points on air space are not required all through the analysis.…”

Influence of demagnetizing field on thin-film GMI magnetic sensor elements with uniaxial magnetic anisotropy

“…The magnetic moment method solves unknown magnetization of the material using integral equation method and then obtains the magnetic field by the magnetization and the field from other sources (applied current, magnet, etc.) [21]. In the calculations, the direction parallel to the longitudinal direction of the element is defined as the x-axis, and the center of the element is defined as the origin.…”

A structural mapping technique for geometric parametrization in the optimization of magnetic devices

“…Since the matrices [ P I and ( Q } are expressed in terms of the device geometry and material characteristics, their derivatives are expressed directly without need for an additional field c o m p~t a t i o n .~-l~~'~ The known field solution for A from equation (1) is then used in the assemblage of the right-hand side of equation (4). It is to be noted that the coefficient matrix is the same as in equation (1).…”