Method and apparatus for standstill recognition when restarting a power
converter-fed AC motor without a tachometer generator
    1.
    发明授权
    Method and apparatus for standstill recognition when restarting a power converter-fed AC motor without a tachometer generator 失效
    在没有转速计发电机的情况下重新启动电力转换器供电的交流电机时,用于静止识别的方法和装置

    公开(公告)号:US5635811A

    公开(公告)日:1997-06-03

    申请号:US474719

    申请日:1995-06-07

    CPC分类号: H02P1/30 H02P1/029 H02P3/18

    摘要: The invention relates to a method and apparatus for recognizing a standstill condition when restarting a power converter-fed AC motor without a tachometer generator. According to an embodiment of the invention, a standstill recognition method includes first and second active phases decoupled by a passive phase. In each phase, time characteristics of the orthogonal current components of a measured motor current are recorded, and the energy component of current from the second active phase is further evaluated to generate an average value. This generated average value and an upper range value are then compared to a limiting value, which will be exceeded when the AC motor is at a standstill. Thus, through application of a current measurement and a simple evaluation, one can quickly determine the actual state of the power converter-fed AC motor when restarting.

    摘要翻译: 本发明涉及一种用于在没有转速计发生器的情况下重新启动功率变换器供电的AC电动机时识别停机状态的方法和装置。 根据本发明的实施例,静止识别方法包括被被动相分离的第一和第二有源相位。 在每一相中,记录测量的电动机电流的正交电流分量的时间特性,并进一步评估来自第二活性相的电流的能量分量以产生平均值。 然后将该产生的平均值和上限值与限制值进行比较,当限制值超过AC电机处于停止状态时。 因此,通过应用电流测量和简单的评估,可以在重新启动时快速确定电力变换器馈电的交流电机的实际状态。

    Optoelectronic Module
    3.
    发明申请
    Optoelectronic Module 审中-公开
    光电模块

    公开(公告)号:US20120228666A1

    公开(公告)日:2012-09-13

    申请号:US13496805

    申请日:2010-09-06

    IPC分类号: H01L33/36

    摘要: An optoelectronic module has at least one carrier with at least one contact location. A semiconductor chip emitting radiation includes a first contact surface and a second contact surface. An electrically insulating layer has a first and a second recess. The first contact surface is disposed on the side of the semiconductor chip emitting radiation facing away from the carrier. The electrically insulating layer is applied at least in places to the carrier. The semiconductor chip includes the first recess in the area of the first contact surface and the second recess in the area of the contact location. A electrically conductive conductor structure is disposed on the electrically insulating layer. The first contact surface electrically contacts the contact location of the carrier. The electrically insulating layer is formed predominately from a ceramic material.

    摘要翻译: 光电子模块具有至少一个具有至少一个接触位置的载体。 发射辐射的半导体芯片包括第一接触表面和第二接触表面。 电绝缘层具有第一和第二凹部。 第一接触表面设置在半导体芯片发射背离载体的辐射的一侧。 电绝缘层至少施加到载体的位置。 半导体芯片包括在第一接触表面的区域中的第一凹部和在接触位置的区域中的第二凹部。 导电导体结构设置在电绝缘层上。 第一接触表面电接触载体的接触位置。 电绝缘层主要由陶瓷材料形成。