Abstract
We consider the improvement of the stator structure of self-propelled rotary actuator whose rotational axis is parallel to the exciting magnetic field. The stator of the actuator is constructed from the grain-oriented electrical steel sheet. The relation between the rolling direction of the steel sheet and the direction of the exciting magnetic field is important for the starting torque and rotational stability of the actuator. The complex E&S model which is able to express the 2-D vector magnetic properties is useful for the magnetic field analysis in consideration of the rolling direction of the steel sheet. Therefore, we analyze the actuator's stator model by using the FEM which introduced the complex E&S model. As a result, we consider the relation between the rolling direction of the steel sheet and the starting torque, and evaluate the iron loss of the actuator's stator.
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