公开(公告)号：US4634943A

公开(公告)日：1987-01-06

申请号：US775473

申请日：1985-09-12

申请人： Horst Reick ,  Gerhard Kratz

发明人： Horst Reick ,  Gerhard Kratz

IPC分类号： H02M3/158 ,  H02P7/00

CPC分类号： H02M3/1584 ,  Y02T10/7258

摘要： An inductive load 1, more specifically a direct current motor, is fed by a direct current source through a semiconductor regulator which contains two parallel switching controllable semiconductor rectifier elements with identical conduction direction which in turn are in series with a respective one-half of center tapped output autotransformer. Parallel to the semiconductor regulator is an additional and identical semiconductor regulator. The center tap points of both semiconductor regulator autotransformers are connected with the terminals of a third output autotransformer which is similarly center tapped, whereby the center tap point of the third output autotransformer is connected to a terminal (+) of the inductive load. The control assembly is made in such a manner that it produces clock frequency signals with identical control levels for both semiconductor rectifier elements; however, these signals for the two parallel switching arrangements are, electrically offset by 90 degrees. In this way, it is possible to operate the motor in RPM ranges where a minimum of ripple current is obtainable.

摘要翻译： 感性负载1，特别是直流电动机由直流电源馈送通过半导体调节器，该半导体调节器包含具有相同导电方向的两个并联的开关可控半导体整流器元件，该导通方向又与相应的一半中心 抽头输出自耦变压器。 与半导体调节器并联是一个额外且相同的半导体调节器。 两个半导体调节器自耦变压器的中心抽头点与第三输出自耦变压器的端子相连，该第三输出自耦变压器类似地进行中心抽头，由此第三输出自耦变压器的中心抽头点连接到电感负载的端子（+）。 控制组件以这样一种方式制造，以便它们为半导体整流元件产生具有相同控制电平的时钟频率信号; 然而，用于两个并联开关装置的这些信号电偏移90度。 以这种方式，可以在可获得最小纹波电流的RPM范围内操作电机。