... field distribution is established for spoke-type permanent magnet machine to calculate the flux density distribution in the middle of airgap. The paper presents an analytical subdomain model accounting for stator slotting effect. The governing equations are obtained from Maxwell’s equations by using...

... directions in the normal operation condition, reducing the DC current of the saturated open-core FCL. An equivalent magnetic circuit model of the saturated open-core FCL with PM modules is built to calculate the magnetic flux density in the cores of FCL. By applying the modified nodal approach on the circuit...

... by the axially magnetized ferrite PM mounted in the rotor. © Emerald Group Publishing Limited 2014 Finite element analysis Flux density Claw pole alternators are widely integrated in automotive generating systems (Li et al., 2010 ; Finken and Hameyer, 2008 ; Cheng and Habetler...

...Andrzej Demenko; Kay Hameyer; Wojciech Pietrowski; Livio Šušnjić; Krzysztof Zawirski; Björn Riemer; Enno Lange; Kay Hameyer Purpose Depending on the load the flux‐density distribution inside power transformers core shows significant local variations due to stray fluxes which enter the transformer...

... of the flux density against a small perturbation in parameters. This approach gives a multiple objective problem which introduces possibility of choosing a compromise solution among many optimal solutions instead of only one, as in classical GA optimization algorithm. The paper is mainly addressed to readers...

... of the flux density and flux distribution was carried out to investigate the DC biased problem in a laminated core model (LCM). Design/methodology/approach Based on the DC bias test on a LCM, the decomposed HBFEM is applied to accurately calculate the DC‐biasing magnetic field. External electric circuits...

... to be essential for proper design of the CM voltage filters. This paper presents a method for the determination of a CM choke flux density produced by multilevel inverters with carrier‐based modulations. Design/methodology/approach The proposed combination of secant and tangent methods allows efficient...

... through a vector potential. The purpose of this paper is to present a new formulation t ‐ b which directly takes the flux density as source term. Design/methodology/approach This formulation is implemented through finite element and validated by comparison with analytical solutions. The results...

.... Findings In the practical case of a resistance welding equipment, the implemented computational technique has been used in order to evaluate both the magnetic flux density and the induced current density in different tissues. Their values have been also compared with the ones obtained in a homogeneous...

... is about 0.26 mm for typical values of flux density in our case). This leads to very small or very large aspect ratios (between 0.01 and 10) of the elements, which may result in ill‐conditioning of the solution matrix. Moreover, the insulation between laminations is extremely thin (0.01 mm), which further...

... percent slot fill factor as the other three machines in this exercise. Magnetic devices Operations management Torque Flux density Windings A 6 kW interior permanent magnet (IPM) machine designed for a direct‐drive starter/alternator (S/A) has been presented in Lovelace (2000) . The most...

.... Then, mmf and finite element analysis are carried out in order to investigate the air gap flux density and the torque production capability of both surface‐mounted and flux‐concentrating PM machines. Findings The paper finds that, although both machines provide almost the same average torque...

...M. Lukaniszyn; M. Jagiela; R. Wróbel; K. Latawiec Presents an approach to determine sources of cogging torque harmonics in permanent magnet electrical machines on the basis of variations of air‐gap magnetic flux density with time and space. The magnetic flux density is determined from the two...