Method for reducing additional loss of converter transformer

The invention belongs to the technical field of transformers, and particularly relates to a novel method for reducing the additional loss of a converter transformer, which is characterized in that a compensation copper plate is used for replacing a last-stage silicon steel sheet on a voltage regulating side of the converter transformer, and a compensation insulating plate is used for completely insulating the compensation copper plate and a penultimate-stage silicon steel sheet; on the net side and the valve side of the converter transformer, the upper iron core copper plate is assembled on the upper portion of the iron core pulling plate, the lower iron core copper plate is assembled on the lower portion of the iron core pulling plate, and a magnetic flux leakage compensation loop is formed. A compensation copper plate is designed on the voltage regulation side of the converter transformer, and compensation on large-current magnetic leakage caused by a voltage regulation lead on the voltage regulation side i