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Pressure Compensated Subsea Electrical System

A pressure compensation and electrical system technology, applied in the direction of electrical components, electrical equipment construction parts, transformer/inductor cooling, etc., can solve the problems of increasing the cost and weight of pressure compensation underwater electrical systems

Active Publication Date: 2019-12-17
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This surface can be extended by using tank corrugations, cooling fins or external heat exchangers, but this adds cost and weight to the pressure compensated subsea electrical system

Method used

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  • Pressure Compensated Subsea Electrical System
  • Pressure Compensated Subsea Electrical System
  • Pressure Compensated Subsea Electrical System

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Embodiment Construction

[0028] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of illustration so that this disclosure will be thorough and complete, and will convey to Those skilled in the art will fully convey the scope of the present invention. Throughout the description, like numbers refer to like elements.

[0029] Cooling systems for electrical equipment, especially for underwater electrical systems, are used to cool electrical components such as transformers, power converters, power electronic building blocks, semiconductor modules, connections and capacitor units. These electrical components generate heat that needs to be dissipated by the cooling system. Cooling systems for underwater ele...

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Abstract

A pressure compensated subsea electrical system (5a, 5b, c, 5d, 5e) is provided. The pressure compensated underwater electrical system comprises a housing (8) filled with a dielectric liquid (12). The housing has a first housing part (8a) and a second housing part (8b) in pressure communication with each other. The first housing part includes a transformer (3) and the second housing part includes a power converter (4). The pressure compensated subsea electrical system comprises a pressure compensator (2) arranged to compensate the pressure inside the housing. The pressure compensator is able to compensate the pressure in both the first housing part and the second housing part.

Description

technical field [0001] The present invention relates to subsea electrical systems, and in particular to pressure compensated subsea electrical systems. Background technique [0002] In general, underwater electrical installations and equipment usually require high standards regarding durability, long-term functionality and independence during operation. Subsea electrical installations that need to be cooled during operation, such as subsea converters, require autonomous and permanent cooling of their components. It is known to use low compressibility dielectric liquids, such as mineral oil, as cooling fluids. The dielectric fluid can also consist of natural or synthetic esters. In general, dielectric fluids are used to provide a pressure compensating environment and also serve as an electrical insulation medium for electrical components placed in electrical installations, such as capacitor units. Therefore, the tanks of power electronic subsea equipment, such as subsea co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K5/06H01F27/14
CPCH01F27/14H05K5/068H05K7/20236H05K7/20927H02M7/068F28D1/022H05K7/209
Inventor T·拉内里德T·格拉丁格H·伦登曼E·维尔塔南T·瓦格纳T·科伊维鲁奥马
Owner ABB (SCHWEIZ) AG
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