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54 pulse wave phase shift rectifier transformer

A technology of rectifying transformers and phase shifting, which is applied in the direction of transformers, fixed transformers, and parts of transformers/inductors. It can solve the problems of difficult production process and poor stability, and achieve simple coil structure, harmonic suppression, and novel structure. Effect

Inactive Publication Date: 2016-05-25
SUZHOU WUBIAN ELECTRICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large number of output voltage taps (3*9*3) of a single 54-pulse rectifier transformer, the production process is difficult to achieve and the stability is poor

Method used

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  • 54 pulse wave phase shift rectifier transformer
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  • 54 pulse wave phase shift rectifier transformer

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Embodiment

[0030] A 54-pulse phase-shifting rectifier transformer is composed of three 18-pulse phase-shifting rectifier transformers, such as Figure 7 , a single 18-pulse phase-shifting rectifier transformer has one set of input windings and three sets of output windings, the output windings are phase-shifted symmetrically, and the input windings of the three 18-pulse phase-shifting rectifier transformers are symmetrically phase-shifted, so that the three 18-pulse phase-shifting rectifier transformers The average voltage difference between the 9 sets of output windings of the phase-shifting rectifier transformer is 6.7°, and the 9 sets of output windings of the three 18-pulse phase-shifting rectifier transformers are connected to the rectifiers to form a uniform 54-pulse rectification; a single 18-pulse phase-shifting rectifier The voltages of the output windings of the rectifier transformers are equal, and the phase shift angles are -20°, 0°, +20°; the voltages of the input windings of...

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Abstract

The invention provides a 54 pulse wave phase shift rectifier transformer, comprising three 18 pulse wave phase shift rectifier transformers, wherein each 18 pulse wave phase shift rectifier transformer is provided with a set of input winding and three sets of output winding; the output windings carry out phase shift symmetrically and phase ship is carried out symmetrically among the input windings of the three sets of 18 pulse wave phase shift rectifier transformer, so that voltage difference among 9 sets of output winding of the three 18 pulse wave phase shift rectifier transformers is uniformly 6.7 DEG; the 9 sets of output winding of the three 18 pulse wave phase shift rectifier transformers are correspondingly connected with rectifiers to form a uniform 54 pulse wave rectification. The 54 pulse wave phase shift rectifier transformer can be used for solving the technical problem that the existing <=48 pulse wave phase shift rectifier transformer used for an undermine frequency converter transmits relatively high harmonic current to a power grid, thus further eliminating harmonic pollution of the frequency converter self to the power grid.

Description

technical field [0001] The invention relates to a 54-pulse phase-shifting rectifier transformer. Background technique [0002] Due to the continuous development and progress of power electronics technology, along with the proposal and improvement of new control theory, the AC speed control drive, especially the frequency conversion speed control drive with excellent performance has been developed rapidly. The mass promotion and use of anti-riot frequency converters in mines has achieved remarkable application effects in terms of energy saving, labor saving, automation, productivity improvement, quality improvement, maintenance reduction and comfort improvement. In order to make the underground explosion-proof frequency converter play more superior features, it is necessary to study its important component - phase-shifting rectifier transformer. [0003] In order to convert AC to DC in the frequency converter, a rectifier transformer and a rectifier are usually used to form ...

Claims

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Application Information

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IPC IPC(8): H01F30/06H01F27/30H01F27/28H02M7/219
CPCH01F30/06H01F27/2828H01F27/306H02M7/219
Inventor 岳泽
Owner SUZHOU WUBIAN ELECTRICAL TECH CO LTD
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