2019
Volume 19, Number 3/4, pp. 68-73
Characteristics comparison of self-propelled rotary actuator in consideration of shape and rolling direction of steel sheets
Naoya Soda,1 Takaaki Kawano1 and Masato Enokizono2
1 Graduate School of Science and Engineering, Ibaraki University, 316-8511, Japan
2 Vector Magnetic Characteristic Technical Laboratory, 533, 879-0442, Japan
In order to improve a self-propelled rotary actuator, comparison of the actuator characteristics in consideration of shape and rolling direction of the steel sheets used for the actuator is reported. A grain-oriented electrical steel sheet is used as the stator core of the actuator. The shape of the steel sheets greatly affects the characteristics of the actuator. Moreover, the relation between the rolling direction of the sheets and the direction of the exciting magnetic field is important for the starting torque and rotational stability of the actuator. The relation actuator has been investigated by finite element magnetic field analysis which introduced the complex E&S model which is one of a vector magnetic property utilization technique. Regarding the shape of the sheets, a triangle and a rectangle were investigated. As a result, in order to improve the starting torque of the actuator and decrease the total iron loss (core loss or magnetic loss), it is concluded that a triangle is better than a rectangle as the shape of the stator core.
Keywords: E&S model, finite element analysis, grain-oriented electrical steel sheet, iron loss, rolling direction, vector magnetic property