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US 8,742,876 B2Granted
Transformer coil and transformer with passive cooling
AssigneeABB Technology AG
InventorsDaniel Chartouni, Rafael Murillo, Tilo Bühler
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a transformer coil which can be cooled by a heat pipe and has a primary winding and a secondary winding and relates to a transformer which is formed from transformer coils which can be cooled in this way. The heat from the transformer coil is dissipated by the heat pipe. The evaporator of the heat pipe is arranged in the area of the windings and forms at least one extensive evaporator segment, which extends in the circumferential direction of the windings and along the winding axis of the transformer coil and in the process covers a multiplicity of the turns of the secondary winding.
Claims19
A dry transformer coil, comprising:
- a primary winding;
- a secondary winding, the primary and second windings having turns;
- a passively operating heat pipe for carrying thermal energy away from the transformer coil, a section of the heat pipe configured as an evaporator for evaporation of a working medium, arranged in an area of the windings;
- and
- a winding axis along which the primary and second windings are arranged, wherein
- the evaporator forms a plurality of extensive evaporator segments which hold a working medium, extend in a circumferential direction of the windings and along the winding axis and overlap with a plurality of the turns of the secondary winding, the evaporator segments being closed in a bottom area and being in a form of an annular cylindrical vessel, the evaporator segments being surrounded by the secondary winding, or the secondary winding being surrounded by the evaporator segments, wherein the plurality of extensive evaporator segments each have a first end and a second end, connected to one another in an area of their first ends, to form a collecting trough for the working medium and to allow circulation of the working medium through all the evaporator segments.
3 more elements
A dry transformer, comprising:
- a transformer coil, including:
- a primary winding;
- a secondary winding, the primary and second windings having turns;
- a passively operating heat pipe for carrying thermal energy away from the transformer coil, a section of the heat pipe configured as an evaporator for evaporation of a working medium, arranged in an area of the windings;
- and
- a winding axis along which the primary and second windings are arranged, wherein the evaporator forms a plurality of extensive evaporator segments which hold a working medium, extend in a circumferential direction of the windings and along the winding axis and overlap with a plurality of the turns of the secondary winding, the evaporator segments being closed in a bottom area and being in a form of an annular cylindrical vessel, the evaporator segments being surrounded by the secondary winding, or the secondary winding being surrounded by the evaporator segments, wherein the plurality of extensive evaporator segments each have a first end and a second end, connected to one another in an area of their first ends, to form a collecting trough for the working medium and to allow circulation of the working medium through all the evaporator segments.
3 more elements
A wind power installation comprising:
- a nacelle having encapsulation with a dry transformer having a transformer coil including:
- a primary winding;
- a secondary winding, the primary and second windings having turns;
- a passively operating heat pipe for carrying thermal energy away from the transformer coil, a section of the heat pipe configured as an evaporator for evaporation of a working medium, arranged in an area of the windings;
- and a winding axis along which the primary and second windings are arranged, wherein the evaporator forms a plurality of extensive evaporator segments which hold a working medium, extend in a circumferential direction of the windings and along the winding axis and overlap with a plurality of the turns of the secondary winding, the evaporator segments being closed in a bottom area and being in a form of an annular cylindrical vessel, the evaporator segments being surrounded by the secondary winding, or the secondary winding being surrounded by the evaporator segment segments, wherein the plurality of extensive evaporator segments each have a first end and a second end, connected to one another in an area of their first ends, to form a collecting trough for the working medium and to allow circulation of the working medium through all the evaporator segments.
2 more elements
A marine vessel, comprising:
- a dry transformer having a transformer coil including:
- a primary winding;
- a secondary winding, the primary and second windings having turns;
- a passively operating heat pipe for carrying thermal energy away from the transformer coil, a section of the heat pipe configured as an evaporator for evaporation of a working medium, arranged in an area of the windings;
- and a winding axis along which the primary and secondary windings are arranged, wherein the evaporator forms a plurality of extensive evaporator segments which hold a working medium, extend in a circumferential direction of the windings and along the winding axis and overlap with a plurality of the turns of the secondary winding, the evaporator segments being closed in a bottom area and being in a form of an annular cylindrical vessel, the evaporator segments being surrounded by the secondary winding, or the secondary winding being surrounded by the evaporator segments, wherein the plurality of extensive evaporator segments each have a first end and a second end, connected to one another in an area of their first ends, to form a collecting trough for the working medium and to allow circulation of the working medium through all the evaporator segments;
- and the heat pipe of the transformer having a condenser and the condenser being thermally coupled directly to the marine-vessel's wall or the marine-vessel's bottom.
3 more elements
A train, comprising:
- a dry transformer having a transformer including:
- a primary winding;
- a secondary winding, the primary and second windings having turns;
- a passively operating heat pipe for carrying thermal energy away from the transformer coil, a section of the heat pipe configured as an evaporator for evaporation of a working medium, arranged in an area of the windings;
- and a winding axis along which the primary and second windings are arranged, wherein the evaporator form a plurality of extensive evaporator segments which hold a working medium, extend in a circumferential direction of the windings and along the winding axis and cover a plurality of the turns of the secondary winding, the evaporator segments being closed in a bottom area and being in a form of an annular cylindrical vessel, the evaporator segments being surrounded by the secondary winding, or the secondary winding being surrounded by the evaporator segments, wherein the plurality of extensive evaporator segments each have a first end and a second end, connected to one another in an area of their first ends, to form a collecting trough for the working medium and to allow circulation of the working medium through all the evaporator segments;
- and the heat pipe has a condenser, the condenser extending outside cladding on the train, and being coolable by a wind of motion.
3 more elements
Dependencies are inferred from the claim text.