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    • 7. 发明授权
    • Flux-controlled type variable transformer
    • 磁通控制型变压器
    • US6137391A
    • 2000-10-24
    • US254740
    • 1999-03-11
    • Koichi MitamuraMitsuru MaedaMasaaki Sakamoto
    • Koichi MitamuraMitsuru MaedaMasaaki Sakamoto
    • H01F29/14H01F30/00H02M5/10H01F21/08H01F27/24
    • H01F29/14H01F2029/143
    • A flux-controlled variable transformer can control voltage at a high speed without using any voltage adjusting tap. The transformer has a first and second magnetic circuits. The first magnetic circuit is composed of a first and second U-cut cores (13 and 11) which contact at their cut ends with each other in the state either of the two cores has been turned by 90.degree. in a twisting direction relative to the other. The primary winding (14) is wound in common around the second magnetic circuit and the first U-cut core (13) of the first magnetic circuit, the secondary winding (17) is wound around the second magnetic circuit and a control winding (12) is wound on the second U-cut core (11) of the first magnetic circuit. The magnetic flux linking the primary and secondary windings (14 and 17) can be controlled by change of the magnetic resistance in the first magnetic circuit with the primary winding (14) by changing a value of exciting current flowing in the control winding (12). Thus, the voltage in the secondary winding can be continuously changed by adjusting the exciting current flowing in the control winding.
    • PCT No.PCT / JP97 / 04659 Sec。 371日期1999年7月19日第 102(e)1999年7月19日PCT 1997年12月17日PCT公布。 WO99 /​​ 31686 PCT公开 日期1999年6月24日磁通控制变压器可以在不使用任何电压调节龙头的情况下高速控制电压。 变压器具有第一和第二磁路。 第一磁路由第一和第二U形芯(13和11)构成,第一和第二U形芯(13和11)在它们的切割端彼此接触,在两个芯中的任一个相对于第二磁芯的扭转方向已经转动了90度 其他。 初级绕组(14)绕第一磁路的第二磁路和第一U形磁芯(13)共同缠绕,次级绕组(17)缠绕在第二磁路上,控制绕组(12) )缠绕在第一磁路的第二U形芯(11)上。 通过改变在控制绕组(12)中流动的励磁电流的值,可以通过使初级绕组(14)改变第一磁路中的磁阻来控制连接初级和次级绕组(14和17)的磁通量, 。 因此,可以通过调节在控制绕组中流动的励磁电流来连续地改变次级绕组中的电压。