Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1993-06-01
1996-05-21
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Linear
310179, 310180, 318135, H02K 112, H02K 346
Patent
active
055192661
ABSTRACT:
A linear motor has coil assemblies driven by multiple phases mounted side by side on a base plate such that they do not overlap. The coil assemblies include conductors wound upon teeth such that voids in the coil assemblies are minimized along with path lengths and thermal resistances between windings and the base plate, thus maximizing heat dissipation and the power capacity of the motor. The linear motor may have coil assemblies with teeth composed of a first material having desirable magnetic properties and a base plate composed of an inexpensive second material minimizing costs of materials. The teeth may be of varying lengths in or to further minimize voids. The coil assemblies are compactly mounted with a longitudinal axis normal to an axis of movement. Permanent magnets are mounted upon a back iron plate with axis of symmetry normal to the axis of movement. The magnets have outline shapes such that a generally sinusoidal magnetic flux distribution is produced along said axis of movement so as to prevent cogging.
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Anorad Corporation
Dougherty Thomas M.
Morrison Thomas R.
Pastel Christopher R.
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