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Power supply system

A power system and subsystem technology, applied in the field of power systems, can solve the problems of increasing power systems and increasing system costs

Active Publication Date: 2014-09-24
WARTSILA NORWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore it is well known that when the power requirement reaches a certain level, an increase in the voltage of the power system is required in order to avoid high short circuit levels, again increasing the cost of the system

Method used

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Embodiment approach

[0042] According to one embodiment of the invention at least two transformer units LLC are connected in parallel with respect to the drive unit 3, the transformer units providing the same phase shift between the respective first and second connection points 1, 2, the first The connection point and the first connection point and the second connection point and the second connection point are respectively connected, and each drive unit 3 is connected to the first and second connection points 1 , 2 . In this way a system with high redundancy is obtained in which one or more generators and LLC transformers may fail as long as one is operational.

[0043] According to a particular embodiment of the invention, at least one of said drive units 3 is connected to a first connection point 1 of a first transformer unit of said transformer unit LLC1 and to a second connection point of a second transformer unit of said transformer unit LLC2 2. The transformer units are provided with a swit...

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Abstract

The invention relates to comprising at least two drive units (3) with two power inputs and at least one generator (G) providing electrical power at a selected system frequency and voltage. The system comprises a transformer unit (LLC) having a first connection point and a second connection point (1, 2), at least one of which is connected to a generator (G), wherein two inputs of each drive unit are connected a first connection point and a second connection point (1,2) to a transformer unit (LLC), and the transformer unit is adapted to provide a selected phase shift between said inputs at a selected system frequency and voltage .

Description

technical field [0001] The present invention relates to a low-loss high-redundancy power supply system comprising a rectifier bridge and an inverter supplying current to a system comprising at least two electricity consumers, especially on installations with multiple electric motors and multiple generators or power supplies system. Background technique [0002] When providing power to electric motors such as electric propulsion systems or pump applications in offshore installations, it is common practice to utilize a rectifier bridge coupled to a three-phase supply through a transformer that provides two AC sources to the rectifier bridge input of. Many such systems are known, for example as described in International Patent Application No. WO2005 / 119892, which describes a system for suppressing harmonic voltages in a network and for reducing the strain on the rectifiers in the system . [0003] Power systems used on large installations such as offshore installations or s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/45H02J3/38
CPCH02J3/44Y10T307/297H02M5/45H05B41/2853Y10S257/925
Inventor 艾吉尔·希斯塔德斯维恩·马格纳·德祖维
Owner WARTSILA NORWAY