Method for calculating transformer short-circuit impedance and winding circulation in transformer design stage

Abstract

The invention discloses a method for calculating transformer short-circuit impedance and winding circulation in a transformer design stage, which comprises the following steps of: 1, determining a researched transformer object, and obtaining related parameters; 2, calculating the short-circuit impedance of the transformer; 3, calculating a leakage flux peak value of the transformer; and 4, calculating the winding circulation of the transformer. Three kinds of transformer electromagnetic parameters are calculated and associated together, and the relationship among the three kinds of transformerelectromagnetic parameters and the relationship between the three kinds of transformer electromagnetic parameters and transformer winding design parameters are derived through a formula. The parameters can be quickly calculated, and meanwhile, the electromagnetic parameters of the transformer, which do not meet the design requirements, can be adjusted by adjusting the winding design according tothe relationship shown in the derived formula. The formulas have guiding significance for adjustment of electromagnetic parameters.

Description

technical field [0001] The invention belongs to the technical field of transformer design, and in particular relates to a method for calculating transformer short-circuit impedance and winding circulation current in the stage of transformer design. Background technique [0002] In the transformer design stage, after the designer selects the transformer core and designs the winding parameters, it is necessary to verify whether the designed transformer can meet the design specifications and whether it can operate stably under engineering conditions. At this time, some tools are needed for effective verification. After passing the verification, the next step of design or production can be carried out. [0003] In a transformer, an induced potential is induced in the winding coil due to the axial leakage field. Under the action of the potential difference of the induced potential of the winding coil at different positions, a winding circulating current that only flows through t...

AI Technical Summary

Problems solved by technology

Generally speaking, transformer modeling and simulation is required to obtain transformer electromagnetic parameters such as leaka

Images