Transformer

Abstract

An embodiment of the invention discloses a transformer, comprising a primary coil and a secondary coil. The primary coil is electrically connected with a power supply, and the secondary coil is electrically connected with a load, wherein a hollow structure is provided between the primary coil and the secondary coil, the primary coil and the secondary coil are superconducting coils, a controllable capacitor is disposed between the primary coil and the power supply, and the controllable capacitor and the primary coil are connected in parallel. Compared with the prior art, the transformer provided by the embodiment of the invention has no core structure; on one hand, exciting current is greatly increased, and high sensitive reactive power compensation can be provided for a system as leakage reactance increases; the other hand, the saturation problem of a core is basically solved, transformer capacity is improved, and the setting of the superconducting coils reduces total loss of the transformer and improves transformer efficiency on the whole.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a transformer. Background technique [0002] Modern power transformer is a kind of power equipment with high reliability and high efficiency. With the rapid development of my country's electric power industry and urban construction, the transformer industry has developed rapidly accordingly. [0003] In the prior art, a normally conductive iron core transformer generally consists of a primary coil, a secondary coil and an iron core. The transformer uses the electromagnetic induction between the primary coil and the secondary coil to increase or decrease the voltage, and then realize the purpose of transferring electric energy from one circuit to another. The existence of the resistance of the primary and secondary coils in the normally conductive iron core transformer causes the loss of electric energy on the transformer, especially for the high voltage long-distance transmiss...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a transformer to solve the problems caused by the coil resistance of the conventional iron core transformer in the prior art and the AC hysteresis loss and core saturation that occur on the iron core during the working process. The problem of limited transformer capacity, high loss and inability to provide inductive reactive power compensation for long-distance power transmission systems

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