公开(公告)号：US11652421B2

公开(公告)日：2023-05-16

申请号：US17701543

申请日：2022-03-22

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Gary L. Skibinski ,  Zhijun Liu

IPC: H02M5/458 ,  H02P23/00 ,  H03H7/06

CPC classification number: H02M5/458 ,  H02P23/00 ,  H03H7/06 ,  H02P2201/01

Abstract: A line interface filter apparatus to couple a drive or group of drives to a shared multiphase AC bus, including individual phase circuits having an inductor coupled between a respective bus and drive phase lines, a tapped resistor coupled to the respective drive phase line, and a capacitor coupled between the resistor and a common connection of the capacitors of the individual phase circuits, where the capacitance of the capacitors is 5 to 15 times a per-phase equivalent capacitance of the drive or group of drives, and the resistance of the resistors is two times a damping ratio times a square root of a ratio of the filter inductance to the filter capacitance, where the damping ratio ζ is greater than or equal to 1.0 and less than or equal to 2.0.

公开(公告)号：US11342861B2

公开(公告)日：2022-05-24

申请号：US17037979

申请日：2020-09-30

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Zhijun Liu ,  Gary L. Skibinski

IPC: H02M5/458 ,  H02P23/00 ,  H03H7/06

Abstract: A method and line interface filter apparatus to couple a drive or group of drives to a shared multiphase AC bus, including individual phase circuits having an inductor coupled between a respective bus and drive phase lines, a resistor coupled to the respective drive phase line, and a capacitor coupled between the resistor and a common connection of the capacitors of the individual phase circuits, where the capacitance of the capacitors is 5 to 15 times a per-phase equivalent capacitance of the drive or group of drives, and the resistance of the resistors is two times a damping ratio times a square root of a ratio of the filter inductance to the filter capacitance, where the damping ratio is greater than or equal to 1.0 and less than or equal to 2.0.

公开(公告)号：US20180323022A1

公开(公告)日：2018-11-08

申请号：US15720285

申请日：2017-09-29

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Gary L. Skibinski ,  Nickolay N. Guskov ,  Steven J. Krautkramer ,  Jesus Mariscal ,  James P. Clavette ,  Zhijun Liu

IPC: H01H33/08 ,  H02H3/16 ,  H02B1/56 ,  H02B13/025 ,  H05K7/20

CPC classification number: H01H33/08 ,  H02B1/565 ,  H02B13/025 ,  H02H3/16 ,  H05K7/20145

Abstract: Disclosed examples include enclosures with segregated or divided cooling paths and improved arc flash resistance. In one example, a TYPE 12, 50 DEGREE C. ambient common bus power conversion enclosure design provides enhanced arc flash protection & segregated cooling for high reliability of imbedded electronics. Example enclosures and systems can be used in association with AC/DC converters for motor drives or motor control centers, and/or for electroplating or painting systems with modular anode control (MAC) systems to implement an anodic DC electroplating for workpieces and other end use applications.