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Calculation of static characteristics of linear step motors for control rod drives of nuclear reactors-an approximate approach

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2 Author(s)
Khan, S.H. ; City Univ., London, UK ; Ivanov, A.A.

This paper describes an approximate method for calculating the static characteristics of linear step motors (LSM), being developed for control rod drives (CRD) in large nuclear reactors. The static characteristic of such a LSM which is given by the variation of electromagnetic force with armature displacement determines the motor performance in its standing and dynamic modes. The approximate method of calculation of these characteristics is based on the permeance analysis method applied to the phase magnetic circuit of LSM. This is a simple, fast and efficient analytical approach which gives satisfactory results for small stator currents and weak iron saturation, typical to the standing mode of operation of LSM. The method is validated by comparing theoretical results with experimental ones

Published in:

Electrical Machines and Drives, 1993. Sixth International Conference on (Conf. Publ. No. 376)

Date of Conference:

8-10 Sep 1993