An improved magnetic equivalent circuit method for predicting the characteristics of highly saturated electromagnetic devices

Particle Swarm Optimization Approach for Optimal Design of Switched Reluctance Machine

“…Finite-Element Method (FEM) (Arkadan and Kielagas, 1994), Magnetic Equivalent Circuit (MEC) method (Moallem and Dawson, 1998) and piecewise linear model (Miller and Mcglip, 1990) are reported for the analysis of SRM. In this study analytical method described is used to determine the inductance and average torque of the machine.…”

Analytical Modeling of Open-Circuit Air-Gap Field Distributions in Multisegment and Multilayer Interior Permanent-Magnet Machines

“…By way of examples, Laplacian or quasi-Poissonian field equations were directly solved analytically for SPM machines [10], [11] and inset PM machines [12], conformal mapping techniques were used for analyzing the influence of stator slotting [13]- [15] and rotor saliency in IPM machines [16], [17], while lumped magnetic circuit methods [3]- [9], [18]- [26] were extensively used for SPM machines [18]- [20], switched reluctance machines [21], linear brushless dc machines [22], hybrid stepping motors [5], salient-pole synchronous machines [23], flux-switching PM machines [24]- [26], inset PM machines [6], IPM machines [3], [4], [7]- [9], etc. In the lumped magnetic circuit analysis, the permeances of stator yoke and rotor yoke were often omitted for simplicity [5]- [7], [9], [18], [22], [25], [26], or handled with the nonlinear B-H curve of iron by iterative process for higher accuracy [3], [4], [8], [19]- [21], [23], [24]. However, since there is no significant magnetic saturation at yokes, neglecting the permeances of stator yoke and rotor yoke is usually acceptable and the results will still have fair accuracy [27].…”

“…However, since there is no significant magnetic saturation at yokes, neglecting the permeances of stator yoke and rotor yoke is usually acceptable and the results will still have fair accuracy [27]. To account for the slotting effect, [3], [6], [7] introduced Carter coefficient for predicting the average air-gap flux density, and [4], [5], [18], [20], [21], [24]- [26] analytically approximated the flux distributions in the slots by assuming straight and semicircular lines for predicting air-gap flux density distribution. However, the stator slots can be neglected if only the average air-gap flux density is considered [8], [9], [19], [23].…”

Analysis of Optimization Technology for Clapper Automobile Electromagnetic Relay Based PSO

“…Moallem used the flux pattern of highly saturated electromagnetic device obtained from FE analysis to modify MEC for more accurate results [3]. Chang tried to explore the synergistic interaction of FE efficiency and accuracy [4].…”