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1 Maszyny Elektryczne : zeszyty problemowe

1 2015

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Stator pole arrangement of the permanent magnet stepper motor with asymmetric stator for achieving the uniform step

Ferková Ž., Bober P.

Maszyny Elektryczne : zeszyty problemowe

2015

Nr 3 (107)

173--177

A special type of a two-phase permanent magnet stepper motor with asymmetric stator was constructed for the specific purpose. The structural design was based on a modified geometry of standard stator and a functional motor prototype was built. The measurement of the step uniformity reveals irregular step size for half-stepping driver. This paper presents the approach to find proper stator pole dimensions to achieve uniform step in half-stepping regime of permanent magnet stepper motor. The simulation of a magnetic circuit was used. The measurement on the prototype and the simulation of the motor angle for different stator arrangement are presented.