Variable reluctance electric motor using transverse flux - esp. for driving control rods vertically in pressurised core of nuclear reactor

摘要

The motor contains an axial rod made of a magnetic material and provided with a row of ring projections. Rod is located on the axis of a sealed tube surrounded by at least three multipolar stators inside a magnet yoke. Each stator has a pair of pole cores with segment extensions inside the sealed tube. Each extension has two projections with the same length and pitch as projections; but the spaces between the stators is such that two adjacent projections can only be aligned with one stator at any one time. By varying the electric current in the coils wound on the stators, rod is driven axially inside the stators, e.g. to raise or lower boron carbide control rods in a reactor. The present invention constitutes an improvement w.r.t. the motor described in FR 1455472.