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Force control of a linear variable reluctance motor with magnetically coupled phases

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2 Author(s)
Taylor, D.G. ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Ahmed, R.

The problem of force control is addressed for a type of three-phase linear variable reluctance motor that exhibits strong magnetic coupling between its phases. The force produced is a quadratic function of phase currents with coefficient matrix proportional to the spatial derivatives of inductance. The magnetic coupling leads to a non-diagonal inductance matrix, so all possible products of phase currents are involved in the production of force. Constrained optimization is used to determine phase currents that produce a desired force with minimum power dissipation. The new optimal force controller is shown to be related to an existing force controller that applies to classical synchronous reluctance motors.

Published in:

System Theory, 2002. Proceedings of the Thirty-Fourth Southeastern Symposium on

Date of Conference:

2002