公开(公告)号：US5515731A

公开(公告)日：1996-05-14

申请号：US272491

申请日：1994-07-08

Applicant: Bernhard Weisshaar ,  Werner Schnalzger ,  Johann Wokusch

Inventor： Bernhard Weisshaar ,  Werner Schnalzger ,  Johann Wokusch

IPC: B21B37/00 ,  B21B38/00 ,  G01M13/00

CPC classification number: B21B37/007 ,  B21B38/008

Abstract: In chatter monitoring of twin drives of roll stands, vibrations of an upper drive and a lower drive are detected and monitored to determine whether a predetermined amplitude has been exceeded. If the amplitude has been exceeded, a chatter detection signal is generated. In order to prevent the chatter detection signal from being generated erroneously due to an operational pass vibrations, the frequencies of the vibrations of the upper drive and the lower drive are monitored for identity; when the frequencies are identical, the chatter detection signal is suppressed.

Abstract translation: 在摇架的双驱动器的颤音监视中，检测和监视上驱动器和下驱动器的振动以确定是否已经超过预定幅度。 如果超过振幅，则产生颤振检测信号。 为了防止由于操作通过振动而错误地产生颤振检测信号，监视上部驱动器和下部驱动器的振动的频率以进行识别; 当频率相同时，抑制颤振检测信号。

公开(公告)号：US06262906B1

公开(公告)日：2001-07-17

申请号：US09194211

申请日：1999-08-25

Applicant: Theodor Salzmann ,  Johann Wokusch ,  Tomas Greif ,  Hans-Jürgen Müller

Inventor： Theodor Salzmann ,  Johann Wokusch ,  Tomas Greif ,  Hans-Jürgen Müller

IPC: H02M545

CPC classification number: H02M7/003 ,  H05K7/1432

Abstract: An air-cooled power converter with gate turn-off power semiconductors, is described in which the cooling capacity is such that the temperature of the gate turn-off power semiconductor does not exceed a critical temperature limit, the power converter having optimized heat sinks, at least some of which are thermally connected in parallel, and the power converter is designed to operate at a continuous load of 1 to 20 megawatts, preferably of 2 to 10 megawatts.

Abstract translation: 描述了具有栅极关断功率半导体的风冷功率转换器，其中制冷能力使得栅极关断功率半导体的温度不超过临界温度极限，功率转换器具有优化的散热器， 其中至少一些并联热连接，并且功率转换器设计成在1至20兆瓦，优选2至10兆瓦的连续负载下工作。

公开(公告)号：US06189352B1

公开(公告)日：2001-02-20

申请号：US09194215

申请日：1999-02-04

Applicant: Theodor Salzmann ,  Johann Wokusch ,  Rolf-Dieter Klug

Inventor： Theodor Salzmann ,  Johann Wokusch ,  Rolf-Dieter Klug

IPC: B21B3758

CPC classification number: H02M7/003 ,  B21B37/46 ,  H05K7/1432

Abstract: A driving arrangement for rolling stands of a rolling mill, is described. The driving arrangement includes a control system which prescribes desired values for the rolling stands via control units, the rolling stands having at least one electric motor which is supplied with electric energy by a power supply system via at least one converter having turn-off power semiconductors. The converter has an air-cooled design. The cooling power is dimensioned such that the temperature of the turn-off power semiconductors does not exceed a critical temperature limit for continuous operation. The converter includes heat sinks which have an optimum design. At least some of the heat sinks are connected thermally in parallel.

Abstract translation: 描述了轧机的轧机机架的驱动装置。 驱动装置包括控制系统，该控制系统通过控制单元规定轧机机架的期望值，滚动机架具有至少一个电动机，该电动机由电源系统通过至少一个具有截止功率半导体的转换器供电 。 转换器采用风冷设计。 冷却功率的尺寸使得关断功率半导体的温度不超过连续运行的临界温度极限。 该转换器包括具有最佳设计的散热器。 至少一些散热器并联热连接。