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公开(公告)号：US4259716A
公开(公告)日：1981-03-31
申请号：US028405
申请日：1979-04-09
摘要： A novel transformer is described for use in a static inverter in association with one or two switching semiconductor devices. The transformer produces an output for control of the associated switching device(s) which changes in sense from conduction aiding to conduction inhibiting as a function of the flux level in the transformer core. The invention is applicable to single loop cores, such as are assembled from two "U" cores. Control is effected by a primary and secondary control winding wound through an aperture pair, the aperture pair being oriented for "neutrality" of the second control winding to the main flux. The aperture pair creates a five branch magnetic path which permits optimizing the control voltage applied to the associated semiconductor devices both to enhance the switching efficiency when the switching device is initially turned on and to reduce stresses on the switching device by precluding transformer saturation when the switching device is turned off. With two switching devices, two aperture pairs are normally provided.
摘要翻译： 描述了一种与一个或两个开关半导体器件相关联的用于静态逆变器的新型变压器。 变压器产生用于控制相关开关器件的输出，其从感应传导到传导抑制的变化，其作为变压器铁芯中的通量水平的函数。 本发明可应用于单环芯，例如由两个“U”芯组装。 控制通过缠绕在孔径对上的初级和次级控制绕组来实现，该孔径对被定向成使第二控制绕组的“中性”到主通量。 孔径对产生五个分支磁路，其允许优化施加到相关联的半导体器件的控制电压，以在开关器件初始接通时提高开关效率，并且通过在开关器件的切换时通过排除变压器饱和来减小开关器件上的应力 设备已关闭。 使用两个开关装置，通常提供两个开口对。
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公开(公告)号：US4177418A
公开(公告)日：1979-12-04
申请号：US821893
申请日：1977-08-04
CPC分类号： H01F29/14 , H01F2029/143 , Y10S174/17 , Y10S174/25
摘要： The output voltage of a transformer is regulated by controlling the flow of magnetic flux through a shunt core. The transformer includes a main core fabricated from U-I laminations and is arranged to form a substantially rectangular structure. A primary and a secondary coil are seated on the main core. A shunt core with shunt winding having lamination size and structure substantially analogous to that of the main core is positioned in spaced alignment to said main core. A flux interconnecting path, called the bottleneck, connects the main core and the shunt core to form a sturdy unified structure. The shunt winding is activated by control circuitry by which the flux flow through the shunt core is limited and hence the output voltage is regulated.
摘要翻译： 变压器的输出电压通过控制通过分流铁心的磁通流量来调节。 变压器包括由U-I叠片制成的主芯，并且被布置成形成大致矩形的结构。 初级和次级线圈位于主芯上。 具有分流绕组的分路芯具有基本上类似于主芯的层叠尺寸和结构的位置与所述主芯间隔开定位。 称为瓶颈的通量互连路径连接主芯和分流芯，形成坚固的统一结构。 分流绕组由控制电路激活，通过该控制电路流过分流铁芯的磁通量受到限制，因此输出电压被调节。
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