Method for producing tri-splitting drive rectifier transformer

A technology for rectifying transformers and manufacturing methods, which is applied in the field of transformers, and can solve problems such as difficulty in matching short-circuit impedance values, overheating of transformers, and uneven distribution of short-circuit currents.

Active Publication Date: 2007-03-21
BAODING TIANWEI BAOBIAN ELECTRICAL
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Problems solved by technology

When the three low-voltage windings on each core column are arranged axially, due to the influence of self-inductance and mutual inductance, the short-circuit impedance value of the three parallel high-voltage windings on each core column to the three low-voltage windings on the core column hard to match
If the difference between the three short-circuit impedance values ​​is too large, there will be a large circulating current among t

Method used

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  • Method for producing tri-splitting drive rectifier transformer
  • Method for producing tri-splitting drive rectifier transformer
  • Method for producing tri-splitting drive rectifier transformer

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Embodiment Construction

[0062] Figure 1 can be regarded as a simplified assembly diagram of the device body. The mutual position of the iron core and windings is marked in the figure. The iron core adopts a three-column structure, and the high and low voltage windings are arranged concentrically and sleeved on the three core columns.

[0063] Figure 3 is a drawing of the winding set on the iron core column, and each iron core column is equipped with three low-voltage windings a1~a3 (or b1~b3, c1~c3) and three high-voltage windings A1~A3 (or B1~B3, C1~ C3). The three low-voltage windings are arranged axially; the three high-voltage windings are also arranged axially and correspond to the low-voltage windings in height. Depending on its position in the axial direction, it is called upper winding, middle winding and lower winding.

[0064]The low-voltage windings a1~a3, b1~b3 and c1~c3 on the three core columns are respectively set on the inner sides of the high-voltage windings A1~A3, B1~B3 and C1~C3....

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Abstract

A production method for three cleaving transmission transformer belongs to transformer technology field and solves impedance matching problem of three low press windings. It counts electric field, magnetic field, short circuit impedance, short circuit intensity and leak magnetic field of transformer to match impedance of three low press windings. a. Count voltage and current parameter. b. Select iron core parameter. c. Select loop parameter. d. Count short circuit impedance. e. Count spoilage, temperature rise and mechanical power. f. Confirm structure collocation type and parameter. It finds the rule about the three cleaving transmission transformer to solve the problem of high voltage winding circumfluence and keep the transformer with natural function at all kinds of load condition. When satisfied the coequal load condition, it can reduce 50% area and 15-20%spoilage with high over loading ability and its sequential course can reach to 115% of rated capability.

Description

technical field [0001] The invention relates to a method for manufacturing a rectifier transformer, which belongs to the technical field of transformers. Background technique [0002] At present, the rectifier transformer that supplies power to the three-phase AC-AC frequency conversion speed control system generally adopts the power supply mode of three double-winding transformers each with a phase rectifier, which will inevitably lead to a large area occupied by the power supply equipment and a large workload for equipment maintenance. For this reason, the concept of three cracking transformers was proposed. The so-called three-cracking transformer refers to the use of a three-column core 1, and three low-voltage windings a1~a3, b1~b3, c1~c3 and three high-voltage windings A1~A3, B1~B3, C1~C3. The three low-voltage windings are arranged axially, leading out three low-voltage leads respectively; the three high-voltage windings are also arranged axially, and the three-way ...

Claims

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Application Information

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IPC IPC(8): H01F30/12H01F27/28H01F27/24H01F41/00
Inventor 孙新忠郑秀娟张亚杰
Owner BAODING TIANWEI BAOBIAN ELECTRICAL
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