In accordance with the driving characteristics of ac driving locomotive , the working status of its traction transformer is analysed . the questions that should be considered in the traction transformer design of ac driving locomotive are mentioned . these questions are the large short - circuit impedance of traction winding , higher harmonic current , over - excitation and dc magnetization caused by large variation of the network voltage , etc . some disposal methods are given 針對交流傳動電力機(jī)車的傳動特點(diǎn),對其中的牽引變壓器的工作狀態(tài)進(jìn)行了分析,指出交流傳動電力機(jī)車用牽引變壓器設(shè)計時需考慮的牽引繞組的短路阻抗大、電流的高次諧波、網(wǎng)壓波動大可能引起的過勵磁以及直流磁化等問題,同時給出了相應(yīng)的一些解決方法。