【摘要】 分析了星-开口三角型三相铁磁三倍叛变压器的移相原理和用于分频输电系统时可能出现的问题，提出了两种新型的铁磁三倍频变压器的结构方案，并论述了它们的工作原理和优点。指出对铁磁三倍频变压器仍需进行更深入研究的若干问题．更多还原

【Abstract】 The principle of phase shifting of the so called star-open delta type of ferromagnetic triple frequency transformer and the difficulties which may present when this type of transformer is used in high voltage fractional transmission system are discussed in this paper. In order to overcome the difficulties, two types of ferromagnetic triple frequency transformers with special structural schemes are proposed. The advantages of these types of transformers are analysed and someproblems which are need to be profoundly studied are also pointed out in the paper.更多还原