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    • 9. 发明公开
    • Electrically-variable inductor
    • Elektrisch变量Induktivität。
    • EP0246377A1
    • 1987-11-25
    • EP86303951.7
    • 1986-05-23
    • ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY LIMITED
    • Hulanicki, JosephZmood, Ronald Barry
    • H01F29/14
    • H01F29/146H01F2029/143
    • An inductive device includes a principal magnetic core (11) having a principal winding (10) coupled therewith so that the reluctance of the principal core influences the inductance of the principal winding. A control winding (12) is coupled to a control magnetic core (13) so that the current in the control winding influences the magnetic flux in the control core. The control core intersects the principal core so that magnetic flux produced in the control core interferes with the principal core. Selective control of current in the control winding influences the magnetic flux in the control core, which in turn interferes with the principal core so as to influence the reluctance thereof and thereby vary the inductance of the principal winding. Additional control windings may be coupled to respective additional control cores (13a, 13b, 13c) which intersect the principal core, so that selective control of the currents in the various control windings enables selective control of the degree of interference with the principal core, and hence the reluctance thereof. The dimensions of respective reluctance control regions where the control cores intersect the principal core may be selected such that the degrees of influence of the individual control cores are in a binary sequence.
    • 感应装置包括具有与其耦合的主绕组(10)的主磁芯(11),使得主芯的磁阻影响主绕组的电感。 控制绕组(12)耦合到控制磁芯(13),使得控制绕组中的电流影响控制芯中的磁通量。 控制芯与主芯相交,使得在控制芯中产生的磁通干涉主芯。 控制绕组中的电流的选择性控制影响控制铁芯中的磁通量,这又影响主铁心,从而影响其磁阻,从而改变主绕组的电感。 附加的控制绕组可以耦合到与主芯相交的相应的附加控制磁芯(13a,13b,13c),使得对各个控制绕组中的电流的选择性控制使得能够选择性地控制与主磁芯的干涉程度,以及 因此不愿意。 可以选择控制核心与主核心相交的各个磁阻控制区域的尺寸,使得各个控制核心的影响程度为二进制序列。