Electrical generator or motor structure – Dynamoelectric – Conducting fluid
Patent
1988-06-06
1989-08-22
Salce, Patrick R.
Electrical generator or motor structure
Dynamoelectric
Conducting fluid
417 50, H02K 4404, H02K 4408
Patent
active
048598852
ABSTRACT:
A winding and method of winding for a submersible linear pump for pumping liquid sodium is disclosed. The pump includes a stator having a central cylindrical duct preferably vertically aligned. The central vertical duct is surrounded by a system of coils in slots. These slots are interleaved with magnetic flux conducting elements, these magnetic flux conducting elements forming a continuous magnetic field conduction path along the stator. The central duct has placed therein a cylindrical magnetic conducting core, this core having a cylindrical diameter less than the diameter of the cylindrical duct. The core once placed to the duct defines a cylindrical interstitial pumping volume of the pump. This cylindrical interstitial pumping volume preferably defines an inlet at the bottom of the pump, and an outlet at the top of the pump. Pump operation occurs by static windings in the outer stator sequentially conveying toroidal fields from the pump inlet at the bottom of the pump to the pump outlet at the top of the pump. The winding apparatus and method of winding disclosed uses multiple slots per pole per phase with parallel winding legs on each phase equal to or less than the number of slots per pole per phase. The slot sequence per pole per phase is chosen to equalize the variations in flux density of the pump sodium as it passes into the pump at the pump inlet with little or no flux and acquires magnetic flux in passage through the pump to the pump outlet.
REFERENCES:
patent: 4177015 (1979-12-01), Davidson
patent: 4557667 (1985-12-01), Delassus et al.
Krauya, V. M., Regulation of the Head of a Liquid-Metal Induction Pump, Magnetohydrodynamics, (U.S.A.), vol. 7, No. 2, pp. 216-220, Apr.-Jun. 1971.
Dudley, A. M., Connecting Induction Motors, McGraw-Hill Book Co., Inc., 1921, pp. 32-33.
Brynsvold Glen V.
Jahns Thomas M.
Kliman Gerald B.
General Electric Company
Jones Judson H.
Salce Patrick R.
Schroeder Robert R.
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