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Comparative magnetic analysis of I-type actuator based active magnetic bearing system

Debnath Sukanta, Biswas Pabitra Kumar

Journal of Power Technologies

2020

Vol. 100, nr 3

211--222

We investigated the performance of designed single coil and multi-coil actuators for the Active Magnetic Bearing (AMB) system. The attractive force differs depending on the structure and actuator design. The behavior and characteristics of particular actuators differ too. Ansys Maxwell was used to perform magnetic analyses of flux, flux density, field strength, force profile and inductance profile in 2D, and magnetic flux density, field strength, current density and inductance profile in 3D. These analyses were performed for the 10 mm air gap between the actuator and rotor for single, two, three and four coils and all the parameters were compared. The quantities were compared to provide insight into the behavior of single and multi-coil actuators.

Vector magneto-hysteretic E&SS model for magnetic characteristic analysis

Enokizano M., Schimoji H., Ikariga A.

Przegląd Elektrotechniczny

2003

R. 79, nr 10

671-676

This paper deals how to grasp and use the accurate magnetic property of the electrical steel sheet and so on. The magnetic property is called "vector magnetic property", which means the relationship between the magnetic flux density vector B and the magnetic field strength vector H. Therefore the vector magnetic property shows non-linearity of not only in amplitude but also in the spatial phase difference angle ?BH between the vector H and the vector B. In order to express the relation, "E&SS model" as engineering model has been proposed, which can introduce to the numerical simulation technique such as the finite element method. This method is useful for the development of the highly efficiency electrical machines using the highly quality electrical steel sheets.