Linear synchronous motor with multiple time constant circuits, a secondary synchronous stator member and improved method for mounting permanent magnets
First Claim
1. A synchronous linear electrical machine operable as a motor or an electrodynamic brake, comprisingan array of at least two permanent magnets arrange in alternating polarity;
- a ferromagnetic back plate having machined pockets to accept the permanent magnets in such a manner that will allow for highly accurate pole pitch spacing along the magnetic array, wherein said pockets surround and keep respective magnets in place;
a one-piece ladder-type frame made of a non-ferromagnetic material; and
one piece ladder-type frame made of a conductive material laminated to said one-piece ladder type frame made of a non-ferromagnetic material;
a non-magnetic case in which said frames are welded, wherein said frames are blind drilled and tapped to create a bolt pattern that matches a bolt pattern of the ferromagnetic back plate.
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Accused Products
Abstract
The linear synchronous motor consists of a specific primary and secondary part. The secondary portion is a ferromagnetic back plate. An array of permanent magnets are attached to the back plate so that a fixed or variable pole pitch occurs in a precise manner between at least two magnets of alternating polarity which improves existing methods for attaching, guiding, protecting and enhancing the overall flux array produced and emitted by the permanent magnets. A one-piece electrically synchronous linear secondary stator member accompanies a primary member, the synchronous linear permanent magnet motor. The stator electrical frequency is customizeable to allow for a wide variety of braking applications.
36 Citations
33 Claims
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1. A synchronous linear electrical machine operable as a motor or an electrodynamic brake, comprising
an array of at least two permanent magnets arrange in alternating polarity; - a ferromagnetic back plate having machined pockets to accept the permanent magnets in such a manner that will allow for highly accurate pole pitch spacing along the magnetic array, wherein said pockets surround and keep respective magnets in place;
a one-piece ladder-type frame made of a non-ferromagnetic material; and
one piece ladder-type frame made of a conductive material laminated to said one-piece ladder type frame made of a non-ferromagnetic material;
a non-magnetic case in which said frames are welded, wherein said frames are blind drilled and tapped to create a bolt pattern that matches a bolt pattern of the ferromagnetic back plate. - View Dependent Claims (2, 3, 4)
- a ferromagnetic back plate having machined pockets to accept the permanent magnets in such a manner that will allow for highly accurate pole pitch spacing along the magnetic array, wherein said pockets surround and keep respective magnets in place;
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5. A synchronous linear electrical machine operable as an electrodynamic brake comprising a primary member, said primary member comprising:
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an array of at lest two permanent magnets, said magnets arranged in alternating polarity; and
a secondary stator member, wherein said stator member is a one-piece non-layered or multi-layered conductive rail, and wherein said rail is slotted at a 90 degree angle, and said slots are spaced at a pre-determined pole pitch spacing. - View Dependent Claims (7, 8)
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6. A synchronous linear electrical machine operable as an electrodynamic brake comprising a primary member, said primary member comprising:
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an array of at least two permanent magnets, said magnets arranged in alternating polarity; and
a secondary stator member, wherein said stator member is a one-piece non-layered or multi-layered conductive rail slotted to at least a 1 degree angle, and said slots are spaced at a pre-determined pole pitch spacing.
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9. A primary member comprising:
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a. a ferromagnetic back plate having pockets formed therein, said pockets spaced apart at a predetermined pole pitch spacing;
b. an array of permanent magnets, said magnets respective to said pockets and arranged in alternating polarity, and said magnets magnetically secured to said back plate and positioned within said pockets; and
c. a frame attached to said back plate, said frame having spaces therein corresponding to said magnets. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A synchronous linear motor comprising:
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a. a primary member comprising an array of permanent magnets; and
b. a secondary member, said secondary member comprising i. a rail made of a conductive material;
ii. slots defined in said rail, said slots spaced apart wherein the distance between each slot corresponds to a pole pitch spacing of said permanent magnets. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 33)
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32. A synchronous linear motor comprising:
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a. a primary member comprising an array of permanent magnets; and
b. a secondary member, said secondary member comprising i. a disc shaped stator made of a conductive material;
ii. slots defined in said stator, said slots spaced apart wherein the distance between each slot corresponds to a pole pitch spacing of said permanent magnets.
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Specification