Multi-winding high-frequency transformer with solid insulation structure

Abstract

The invention provides a multi-winding high-frequency transformer with a solid insulation structure, which is characterized in that an input coil is arranged close to a sectional magnetic core column,and a plurality of output coils are sequentially sleeved on the outer side of the input coil from top to bottom; and an upper magnet yoke and a lower magnet yoke are arranged on the upper side and the lower side of a shell type magnetic core and winding assembly respectively, and bypass magnet yokes are arranged on the outer side of the output coil respectively. Solid insulation filling structures are respectively arranged between the input coil and the output coil, between the input coil and the sectional type magnetic core column, and between the shell type magnetic core and winding assembly and the magnet yokes. A middle section magnetic core column is made of low-permeability magnetic materials, and the upper section and the lower section are both made of high-permeability magnetic materials. The solid insulation material disclosed by the invention has high breakdown electric field strength and good heat-conducting property, so that the insulating distance is smaller than the traditional air insulating distance, transformer oil circulation, an external closed oil tank and a heat dissipation structure required for cooling the transformer oil do not exist, and the power densityof a transformer is improved.

Description

technical field [0001] The invention relates to the technical field of high-frequency transformers, in particular to a multi-winding high-frequency transformer with a solid insulation structure. Background technique [0002] Power transformers are one of the main equipment in power plants and substations. The role of the transformer is multifaceted. It can not only increase the voltage to send electric energy to the power consumption area, but also reduce the voltage to the voltage of all levels to meet the needs of power consumption. In short, both step-up and step-down must be done by the transformer. In the process of electric energy transmission in the power system, two parts of voltage and power will inevitably be lost. When the same power is transmitted, the voltage loss is inversely proportional to the voltage, and the power loss is inversely proportional to the square of the voltage. Using the transformer to increase the voltage reduces the power transmission loss....

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At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

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