transformer

Abstract

The present invention provides a transformer comprising: at least one magnetic core, wherein each of said magnetic cores has at least one window; a primary winding passing through at least one window of all said magnetic cores, wherein said primary winding is formed The wires are sequentially covered with a first solid insulating layer, a ground shielding layer and a second solid insulating layer along the radial direction of the wires from inside to outside, the ground shielding layer is connected to a reference ground; and at least one secondary side winding, Each of the secondary side windings passes through at least one window of a corresponding one of the magnetic cores, wherein the primary side winding has a first voltage to the reference ground, and the secondary side winding has a first voltage to the reference ground. The ground has a second voltage which is more than 50 times the first voltage. The transformer provided by the present invention has only one level of insulation isolation, occupies a small space volume, and at the same time, the overall electric field distribution is more uniform, and the overall insulation coordination is optimized.

Description

technical field [0001] The invention relates to electrical components, in particular to a transformer. Background technique [0002] With the rapid explosion of data volume, the sharp increase in data value, and the rapid development of cloud computing, the scale of data centers has maintained a rapid growth trend in recent years. Whether it is the global market or the Chinese market, the market value and power consumption of data centers reflect the data Future development of the Center and its importance. On the other hand, under the double drive of policy and market, the production and sales of new energy vehicles continued to rise. An intelligent and efficient charging infrastructure system that follows vehicles and piles is also an important technology to be developed. [0003] With its advantages of high efficiency and modularity, power electronic converters are the development direction of power supply for data centers and charging piles in the future. Among them, ...

AI Technical Summary

Problems solved by technology

(3) Two-stage magnetic components in series structure, reducing transformer efficiency

[0012] The disadvantages of the second solution are: (1) The encapsulation of the magnetic element 104 limits the selection of magnetic core materials, and the pressure after encapsulation usually leads to a substantial increase in core loss, and the insulating material will affect the heat dissipation performance of the magnetic element 104

[0013] It can be seen that the traditional scheme is difficult to optimize the insulation coordination, improve the electric field distribution of the transformer, and increase the power density of the transformer while miniaturizing the transformer.

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