Patents Represented by Attorney Mark S. Svat
  • Patent number: 5909367
    Abstract: An AC--AC multi-module matrix PWM converter includes one to a plurality of phase banks within which are provided architecturally identical basic circuit modules of single phase output AC--AC matrix converters. Each basic converter module includes three-phase AC inputs and two output terminals. The modules may then be interconnected in series or parallel with other modules within a phase bank to increase the output voltage or current respectively of the phase bank. The differential power module structure and the differential phase PWM modulation scheme increases the output voltage by 15.5% in comparison with phase modulation. Individually designed and tested phase banks can be further connected to a higher power symmetric three phase system or multiphase system for various AC load and AC motor controls. The modular structure permits standardization of the power electronics design and manufacture at system level.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 1, 1999
    Assignee: Reliance Electric Industrial Company
    Inventor: Jie Change
  • Patent number: 5892677
    Abstract: A high power AC--AC converter having integrated adaptive commutation control and a new modularity design based on standard per-phase floating AC power-building modules. The per-phase floating AC power building modules designed with high voltage throughput and optimal partitioning differential output architecture which is suitable for multi-phase multi-module high power electronic systems. Now integrated and smart AC power switch modules are provided to reduce the gate control complexity, minimize circuit connection terminals and simplify power bus structure.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: April 6, 1999
    Assignee: Reliance Electric Industrial Company
    Inventor: Jie Chang
  • Patent number: 5862411
    Abstract: A controller based network, where data from a plurality of nodes is placed onto the network in a scheduled predetermined order during a network update interval. The data transmitted onto the network being collected following the issuance of a data collection start signal issued in accordance with a timer, whereby the issuance of the data collection start signal can be varied within the network update interval. The collected data being transmitted onto the network upon the issuance of a data transmission signal.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: January 19, 1999
    Assignee: Allen Bradley Company, Inc.
    Inventors: James J. Kay, Peter J. Boldt
  • Patent number: 5809334
    Abstract: A processor-based control system including a host processor, a data receiver device, a system memory, and an intelligent DMA controller. The DMA controller includes a pre-parsing section. The pre-parsing section interrogating a received data packet to determine whether the received data packet contains an error, is valid, is a null packet or whether the host processor must be contacted.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: September 15, 1998
    Assignee: Allen-Bradley Company, LLC
    Inventors: Daniel J. Galdun, Peter J. Boldt