Abstract A transformer for use with an electric motor for a submersible pump the stator of which has a group of coils with each group of coils being subdivided into a plurality of coils of different widths arranged symmetrically with respect to the axis of each group of coils and where the transformer applies different voltages to each coil group. The transformer has a core made up of a plurality of portions having different cross sections and a plurality of secondary windings with a secondary winding surrounding each of the core portions and where each secondary winding is adapted to be connected at one of its ends to a common star point joining the plurality of coils of a single coil group and at its other end to an individual coil of the coil group.
Inventors
👤 Nikolaus Laing
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 04:57
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A multi-phase transformer for supplying a number of different voltages comprising a core having a plurality of core portions of different cross-sectional areas with the number of core portions equal to the number of different voltages required, a plurality of primary windings equal to the number of phases with each primary winding surrounding said core, and a plurality of secondary windings equal to the number of primary windings with each secondary winding comprising a plurality of individual windings of equal turns with the number of individual windings being equal to the number of voltages required and where each individual winding surrounds a core portion whereby when said primary windings are connected to a multi-phase current source, said individual core portions will impose a voltage on the individual windings proportional to the cross-sectional area of the core portions surrounded by the individual windings.
Claim 2
Dependent Claim
142 words
A multi-phase transformer for supplying a number of different voltages comprising a core having a plurality of core portions of different cross-sectional areas with the number of core portions equal to the number of different voltages required, a plurality of primary windings equal to the number of phases with each primary winding surrounding said core, and a plurality of secondary windings equal to the number of primary windings with each secondary winding comprising a plurality of individual windings of equal turns with the number of individual windings being equal to the number of voltages required and where each individual winding surrounds a core portion whereby when said primary windings are connected to a multi-phase current source, said individual core portions will impose a voltage on the individual windings proportional to the cross-sectional area of the core portions surrounded by the individual windings.