Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1978-12-06
1980-10-14
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Linear
H02K 4102
Patent
active
042283728
ABSTRACT:
A linear induction motor comprises an inductor with a magnetic core structure formed of first- and second-group laminations and with a polyphase concentrated winding, and a secondary element having an electrically conductive part arranged on a magnetically conductive base. The first-group laminations are extended at right angles to the direction of movement of the inductor and are interconnected by means of the second-group laminations extended in the direction of movement of the inductor. Each first-group lamination has n slots. Rods of the first-group laminations fit tightly in slots of the second-group laminations so that no gaps exist therebetween and toothless active zones are formed in the direction of movement of the inductor, whereas appropriate gaps are provided between the yokes of the first- and second-group laminations. The polyphase concentrated winding includes two groups of coils. The first-group coils of the polyphase concentrated winding are arranged on the yoke of each first-group lamination, while the second-group coils of the polyphase concentrated winding are arranged on the yoke of each second-group lamination. The linear induction motor forming the subject of the present invention features increased tractive force, uniform distribution of magnetizing force within the air gap and enhanced efficiency whereby its operational cost is substantially reduced.
REFERENCES:
patent: 3585423 (1971-06-01), Bolton et al.
patent: 4049983 (1977-09-01), Attwood
Popov Alexandr D.
Solomin Vladimir A.
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