Stereoscopic rolled iron core type photovoltaic transformer with stabilizing windings

A three-dimensional wound iron core and stable winding technology, applied in the direction of transformer/inductor coil/winding/connection, preventing/reducing unnecessary electric/magnetic influence, etc., can solve the problems of equipment heating and affecting the power supply quality of power system, etc. To achieve the effect of harmonic suppression, light weight and small size

Inactive Publication Date: 2013-09-18
HAIHONG ELECTRIC CO LTD
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Problems solved by technology

[0002] Solar photovoltaic power generation has become the most important power generation method in some developed countries, and it has also developed rapidly in my country in recent years. In this new energy industry, the high and low voltage sides are Y-connected transformers. channel, so once the 3rd harmonic is generated on the load side, it will be directly transmitted to the high voltage side, affecting the power supply quality of the power system. At the same time, the 3rd harmonic will directly enter the load, causing the equipment to heat up

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  • Stereoscopic rolled iron core type photovoltaic transformer with stabilizing windings
  • Stereoscopic rolled iron core type photovoltaic transformer with stabilizing windings

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Embodiment Construction

[0012] Reference figure 1 - figure 2 A three-dimensional wound core photovoltaic transformer with stable windings of the present invention includes a three-dimensional wound core 1 with symmetrical three-phase magnetic circuits, and three-phase windings 2 arranged on the three-dimensional wound core 1 in a three-dimensional triangular distribution. Each single-phase winding 3 of the three-phase winding 2 includes a primary winding 4 and a secondary winding 5, and each single-phase winding 3 also includes a stable winding 6, which is arranged between the secondary winding 5 and the iron core. The two stable windings 6 are connected to each other to form a stable winding triangular connection structure, and an electrostatic screen 7 is provided between the primary winding 4 and the secondary winding 5. The structure of the single-phase winding 3 from the inside to the outside is as follows: iron core-stable winding 6-secondary winding 5-electrostatic screen 7-primary winding 4. ...

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Abstract

The invention discloses a stereoscopic rolled iron core type photovoltaic transformer with stabilizing windings, which includes a stereoscopic rolled iron core with symmetrical three-phase magnetic circuits; three-phase windings are distributed in a stereoscopic triangle, and include primary windings, secondary windings and stabilizing windings; each stabilizing winding is arranged between the secondary winding and the iron core; the stabilizing windings are mutually linked to form a stabilizing winding triangular linking structure which is not used for external power supply and has no voltage input and output; when a third subharmonic is generated on the load side, circulation in the delta connection stabilizing winding is formed, so that harmonic is effectively prevented from fleeing to a power grid. The stereoscopic rolled iron core type photovoltaic transformer has the advantages of safety, environmental protection, strong overload capacity, harmonic wave inhibition, and the like, and has the characteristics of low no-load loss and noise, small magnetizing current and size, light weight, attractive appearance and the like.

Description

Technical field [0001] The invention belongs to the technical field of power equipment, and specifically refers to a three-dimensional wound core photovoltaic transformer with stable windings. Background technique [0002] Solar photovoltaic power generation has become the most important power generation method in some developed countries, and it has also developed rapidly in China in recent years. In this new energy industry, transformers with y-connections are used for the high and low voltage sides, because they do not have third-order and third-order harmonics. Therefore, once the third harmonic is generated on the load side, it will be directly transmitted to the high-voltage side, which will affect the power supply quality of the power system. At the same time, the third harmonic will directly enter the load and cause the equipment to heat up. Summary of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a three-dim...

Claims

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Application Information

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IPC IPC(8): H01F27/28H01F27/30H01F27/36
Inventor 许凯旋郭献清梁庆宁邝文聪
Owner HAIHONG ELECTRIC CO LTD
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