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Electric power system including power converter and rotary transformer and method of assembling same

A technology for power converters and rotary transformers, applied in the directions of transformers/inductor coils/windings/connections, transformers, output power conversion devices, etc., can solve the problems of increased maintenance and cleaning frequency, increased operating costs, and abrasive effects.

Inactive Publication Date: 2012-07-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, these known brushes require routine replacement with gradual operational wear
In addition, uneven wear of some of the brushes compared to others may require more frequent inspections and planned equipment shutdowns and / or early or unplanned equipment shutdowns
Furthermore, the inherent wear of the brushes forms carbon dust, which is conductive, abrasive and potentially hazardous, thereby requiring additional and more frequent inspections of nearby equipment and increased frequency of maintenance cleaning of such nearby equipment
Such increased frequency of inspections, cleanings, and brush replacements results in increased operating costs associated with such power systems

Method used

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  • Electric power system including power converter and rotary transformer and method of assembling same
  • Electric power system including power converter and rotary transformer and method of assembling same
  • Electric power system including power converter and rotary transformer and method of assembling same

Examples

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Embodiment Construction

[0012] In the following specification and claims that follow, reference will be made to a number of terms which will be defined to have the following meanings.

[0013] The singular forms "a" and "the" include plural referents unless the context clearly dictates otherwise.

[0014] "Optional" or "optionally" means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event or circumstance occurs and instances where it does not.

[0015] Approximating language, as used herein throughout the specification and claims, may be adapted to modify any numerical representation that can permissibly vary without resulting in a change in the essential function to which it is related. Accordingly, a value modified by a term or terms, such as "about" and "substantially", is not to be limited to the precise value stated. In at least some instances, the proximity language can correspond to the precision of the instru...

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PUM

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Abstract

The present invention relates to an electric power system including a power converter and a rotary transformer and a method of assembling same. The commutation device includes a transformer device having a rotatable portion and a power converter operatively coupled to the transformer device.

Description

technical field [0001] The subject matter described herein relates generally to electrical devices, and more particularly to systems including power converter apparatus and rotatable power transformers, and methods of assembling such systems. Background technique [0002] At least some known power systems include a plurality of slip rings and associated brushes to transfer power from a stationary electrical device to a rotating electrical device. For example, power is delivered via slip rings and brushes to the electric motor drives of many known wind turbine pitch mechanisms. Similarly, power is delivered to the excitation devices of many known synchronous generators via slip rings and brushes. [0003] However, most known slip rings are coupled to the rotating element and the brushes are typically coupled to stationary brush holders or rings. These stationary brushes need to be in physical contact with the rotating slip ring to establish sufficient conductivity between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H02M1/14H01F27/28
CPCH01F38/18H02M3/44H02M3/3376Y10T29/4902
Inventor K·基尔伯格
Owner GENERAL ELECTRIC CO