Takayuki Suzuki, Fuji Electric Co., Ltd.
Oil immersed power transformers are equipments which convert voltage with Faradayâ€™s law of induction on power systems. Leakage magnetic flux generated by transformerâ€™s windings invades each of transformerâ€™s parts and generates eddy current losses. Theses losses prevent high efficiency and space-saving. It is important to calculate exactly the distribution of magnetic flux and the losses for transformer design. This lecture is reported the evaluation of magnetic analyses by JMAG for a real scale model of oil immersed transformer.