Phase-missing self-protecting Scott transformer with compensating iron yoke

Abstract

The invention discloses a phase-missing self-protecting Scott transformer with a compensating iron yoke. The transformer comprises an iron core, multiple windings, damping wave-absorbing sheets, shuntcapacitors and the compensating iron yoke; the multiple windings are installed on an iron core main body, each winding comprises multiple winding wire turns which are connected in sequence, the damping wave-absorbing sheets are arranged between the adjacent winding wire turns, the parallel capacitors are connected to the windings in parallel, and the compensating iron yoke is connected with the iron core. When phase failure occurs, magnetic flux distribution at the iron core can be stabilized; in the phase missing state, phase failure work can still be conducted, that is to say, the self-protecting function is achieved; by arranging the shunt capacitors, the capacity of the transformer subjected to lightning and overvoltage shock can be improved; by arranging the damping wave-absorbing sheets, certain electromagnetic waves can be attenuated, absorbed and shielded, and the mechanical strength of the winding wire turns under electromagnetic oscillation is improved.

Description

technical field [0001] The invention relates to the field of transformer design, in particular to an iron yoke Scott transformer with phase loss self-protection and compensation. Background technique [0002] A transformer is a device that uses the principle of electromagnetic induction to change voltage. It mainly has functions such as voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization. Transformers are also used in rail vehicle traction systems, and for rail vehicles. It can be said that the transformer is the single electrical equipment with the largest weight and volume and the highest price. It is the core equipment in the entire electric traction system and the source of train power. An important prerequisite for stable operation. There are many types of transformers used in rail vehicles, and the Scott transformer is one of the common ones. [0003] The Scott transformer is actually made up of two single-phase transfor...

AI Technical Summary

Problems solved by technology

[0004] And because rail vehicles usually need to work outdoors for a long time, the Scott transformers used in rail vehicles often also need to work outdoors for a long time, which makes the Scott transformers vulnerable to wind, frost, rain and snow. The vibration when the vehicle is running causes the service life of the Scott transformer to be low. In severe cases, it will also cause the winding in the Scott transformer to lose phase. Operation overvoltage and other conditions will cause the transformer load to be too large and cause a short circuit. These conditions will affect the normal operation of the transformer and bring safety hazards to the operation of rail vehicles.

Images