Application of Mesh Models for Investigating the Linear Step Motor for Vertically Moving the Control Rod
A linear step electric drive for vertically moving a nuclear reactor’s control rod is investigated. The electromagnetic field and electromagnetic force calculation methods that are used in the algorithm to integrate the vertical displacement drive’s rotor motion equation are described. The results from numerical experiments on simulating the drive starting process for moving the control rod upward at different speeds of the linear step motor with and without loss of synchronism are presented. A highly detailed analysis of electromagnetic processes in the motor performed in its simulation makes it possible to decrease the margin with respect to the design electromagnetic force or torque, and, hence, to decrease the losses and increase the service life of insulation and the drive as a whole.