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Single-phase autotransformer and voltage regulating method

An autotransformer and single-phase technology, applied in the field of transformers, can solve problems such as high cost, many consumables, and unqualified ratio error, and achieve the effects of low cost, reduced copper consumption, and precise voltage regulation

Pending Publication Date: 2022-07-15
WUJIANG TRANSFORMER
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  • Description
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Problems solved by technology

[0006] The present invention provides a single-phase autotransformer and a voltage regulation method, which are used to solve the problem that when the voltage regulation coil of the transformer is arranged on the side column, the consumables are many and the cost is high, and the time-varying ratio error is unqualified when it is arranged on the main column

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  • Single-phase autotransformer and voltage regulating method

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Embodiment Construction

[0034] For ease of understanding, the single-phase autotransformer and the voltage regulation method are described below with reference to the embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation and positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", ...

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Abstract

The invention belongs to the field of voltage regulation of transformers, and discloses a single-phase autotransformer and a voltage regulation method. The transformer comprises a first side column, a second side column, a main column arranged between the first side column and the second side column, a first tap switch and a second tap switch, a low-voltage coil, a common coil, a series coil and a first voltage regulating coil are sequentially wound on the main column from inside to outside, and a second voltage regulating coil is wound on the first side column; the first tap switch adjusts the number of connected turns of the first voltage regulating coil, and the second tap switch adjusts the number of connected turns of the second voltage regulating coil. The first voltage regulation coil is arranged on the main column, the second voltage regulation coil is arranged on the first side column, the first voltage regulation coil and the second voltage regulation coil are matched and connected in series, and the voltage regulation precision is controlled by setting the turn ratio of the first voltage regulation coil to the second voltage regulation coil. According to the utility model, accurate voltage regulation can be realized, the cost is low, a large-capacity excitation coil does not need to be arranged, the copper consumption is reduced in the same voltage regulation range, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a single-phase autotransformer and a voltage regulation method. Background technique [0002] The transformer generally draws several taps from the coil on one side, and switches from one tap to another through the on-load (or non-excited) tap changer to change the effective number of turns of the access circuit and adjust the transformer. The turns ratio of the primary side and the secondary side to achieve the purpose of regulating the voltage. [0003] The voltage regulating coil of the transformer is generally wound on the side column. Chinese patent CN202405075U discloses a single-phase transformer. In this solution, an excitation coil and a voltage regulating coil are sequentially sheathed on the side column from the inside to the outside, and the low-voltage coil, the medium voltage coil and the high-voltage coil are sheathed on the main column from the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/30H01F27/02H01F27/29
CPCH01F27/30H01F27/29H01F27/02
Inventor 董景义宋志良周一纯孙浩东
Owner WUJIANG TRANSFORMER
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