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1 Maszyny Elektryczne : zeszyty problemowe

1 2011

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Application of permanent magnets with multi-directional magnetization in magnetoelectric disc motor

Błażejczyk T., Rudeński A.

Maszyny Elektryczne : zeszyty problemowe

2011

Nr 5(93)

43-48

Electrical machines are increasingly being employed in electric drives, among other things in car industry (ecological cars) and aerospace sector. In these drives, in order to increase the dynamics of the electric drive moment of interia should not be a large value. The mass of motor is one of the factors influencing the moment of interia. This paper deals with the axial flux permanent magnet (AFPM) motor. The structure of the motor is the following: disc type, inner coreless stator with windings in segmented electromagnetic array (SEMA) technology. In such electric motors the decrease of their mass can be obtained by the decrease of back iron thickness. The reduction of back iron thickness in disc motor can be attained by application of permanentmagnets with multi-directional magnetization (permanent magnets arranged in Halbach array). The paper presents the results of simulation researches of the influence of application of permanent magnets (PMs) with multi-directional magnetization on magnetic flux density distribution in back iron of magnetoelectric disc motors.