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公开(公告)号：US07804038B2
公开(公告)日：2010-09-28
申请号：US11863668
申请日：2007-09-28
CPC分类号： G05B19/0423
摘要： A control system for controlling and synchronizing a plurality of medium-voltage vacuum contactors comprises a two-level network structure. A dedicated network includes a plurality of servant control units operably coupled to the vacuum contactors and configured to ascertain a plurality of different data and conditions thereof. In addition, the dedicated network includes a master control unit in serial communication with the servant control units and configured to send and receive communications therewith. The master control unit is operably coupled to a control network including a plurality of various control devices. The master control unit is configured to send predetermined data received from the servant control units to the control network. The two-level network structure enables relatively jitter free communication on the dedicated network while not overwhelming the control network with unnecessary data. The system is further configured to diagnose and prevent a variety of different vacuum contactor failures.
摘要翻译： 用于控制和同步多个中压真空接触器的控制系统包括两级网络结构。 专用网络包括可操作地耦合到真空接触器并被配置为确定其多个不同数据和条件的多个仆务控制单元。 此外，专用网络包括与服务器控制单元串行通信并被配置为发送和接收与之通信的主控单元。 主控制单元可操作地耦合到包括多个各种控制装置的控制网络。 主控制单元被配置为将从服务控制单元接收的预定数据发送到控制网络。 两级网络结构能够在专用网络上实现相对无抖动的通信，而不会使控制网络压倒不必要的数据。 该系统还被配置为诊断和防止各种不同的真空接触器故障。
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公开(公告)号：US5796599A
公开(公告)日：1998-08-18
申请号：US816445
申请日：1997-03-12
IPC分类号： H02M5/257 , H02P27/16 , H03K17/0814 , H02M7/122
CPC分类号： H02P27/16 , H02M5/2573 , H03K17/08144 , H02M2001/0006 , H03K2217/0081
摘要： A method and/or apparatus used with a thyristor based AC-AC motor controller in a discontinuous current mode for providing power to thyristor gate drivers. The apparatus includes a snubber network and two rechargeable capacitors for storing input line voltage to an inversely connected pair of thyristors when both the thyristors are off. Stored voltage is provided via a power lead to each thyristor driver to provide power thereto and thus the circuit operates in a self-powered manner.
摘要翻译： 一种用于向晶闸管栅极驱动器提供电力的以不连续电流模式的基于晶闸管的AC-AC电动机控制器使用的方法和/或装置。 该装置包括缓冲器网络和两个可再充电电容器，用于当两个晶闸管都断开时，将输入线路电压存储到反向连接的晶闸管对。 存储电压通过电源引线提供给每个晶闸管驱动器以向其提供电力，并且因此电路以自供电方式工作。
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