What is transformer load operation

- Jul 10, 2018-

High Frequency Transformer load operation
The load operation of high frequency transformer refers to the working condition when the original winding is connected to the power supply voltage and the secondary winding is connected to the chartering load. At this time, there is current flow on the side of the transformer. Compared with no load, the access circuit of the original transformer increases correspondingly.
Circuit analysis:
ɸ m 1. The main magnetic flux by the original, deputy side current i1, i2, produce together.
2. The magnetic flux leakage ɸ 1 s generated by the primary side current i1.
3. The magnetic flux leakage ɸ 2 s by vice and current i2.
4. E1 and e2: self-perception + mutual perception; E1s, e2s: self-induction.
When the transformer is under load, the main magnetic field is generated by the current of the primary and secondary side.

Load running current:
When the transformer is loaded, the original side current can be divided into two quantities, one is the excitation component and the other is the load component.
The electromagnetic relation connects the primary and secondary edges, and the change of the secondary current will cause the change of the original side current.
Loss of load operating power:
The iron loss of PFE is basically unchanged when running under load and without load.
Copper loss of primary and secondary side windings: Pcu1=I12R1 Pcu2=I22R2; The copper loss of primary and secondary side windings is proportional to the square of the current of primary and secondary side windings, so it is variable loss.

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