| 摘要 |
PURPOSE:To reduce magnetic flux density of joint part and improve core loss property by arranging the joint part of internal core to the straight part of yoke and the joint part of external core to the corner part thereof. CONSTITUTION:A three-phase wound core is formed by adjacently placing the one legs of a plurality of internal wound cores 1, 2 each other in contact and by arranging an external wound core 3 at the outside thereof. The joint part 4 of the internal wound cores 1, 2 of the three-phase wound core is arranged at the straight part of yoke, while the joint part 5 of external wound core 3 is arranged at the corner part. Magnetic flux distribution of three-phase wound core is divided into the magnetic flux distribution 6 of corner part, magnetic flux distribution of 7 of core and that 8 of yoke. Thereby, magnetic flux distribution of joint part can be reduced and loss of core can also be improved. |
