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公开(公告)号：US20200343820A1
公开(公告)日：2020-10-29
申请号：US16698392
申请日：2019-11-27
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Sarah Badawi , Zhong Y. Cheng , Mehdi Narimani , Ye Zhang
IPC: H02M5/458
Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.
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公开(公告)号：US10651760B1
公开(公告)日：2020-05-12
申请号：US16393613
申请日：2019-04-24
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Zhong Y. Cheng , Navid R. Zargari , Ye Zhang
Abstract: For a power supply with a reduced number of semiconductor devices, a phase shifting transformer receives a three-phase primary voltage and steps the three-phase primary voltage one of up and down to a secondary voltage with a plurality of secondary winding sets. There is phase shifting between different secondary winding sets. A plurality of power cell sets each comprise a plurality of power cells cascaded connected, and each power cell receives one of a single phase and a three-phase voltage of a distinct secondary winding set of the phase shifting transformer. Each power cell comprises no more than eight power semiconductor devices organized as a rectifier and an inverter. Each power semiconductor device is one of a diode and an active switch. Each power cell set generates one phase of a three-phase alternating current output.
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Patent Agency Ranking
公开(公告)号：US10680547B2
公开(公告)日：2020-06-09
申请号：US16033321
申请日：2018-07-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yuan Xiao , Ye Zhang , Ehsan Al-Nabi , Richard L. Piekarz
Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.
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公开(公告)号：US20200021234A1
公开(公告)日：2020-01-16
申请号：US16033321
申请日：2018-07-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yuan Xiao , Ye Zhang , Ehsan Al-Nabi , Richard L. Piekarz
Abstract: The disclosed examples provide an easy and low-loss solution to reduce voltage stress on motor and cable in inverter-fed motor systems by suppressing resonances on the motor cable with apparatus coupled between the inverter output and the motor cable. Disclosed examples include various methods to mitigate voltage stress on both motor and cable, including an output filter circuit with a cable side parallel RL circuit between an inverter output and a motor cable, and an inverter to provide an inverter output signal to the output filter circuit to drive a load through the motor cable, where the cable side parallel RL circuit includes a resistor coupled in series between the inverter output and the motor cable, and an inductor connected in parallel with the resistor.
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公开(公告)号：US10924026B2
公开(公告)日：2021-02-16
申请号：US16837037
申请日：2020-04-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Sarah Badawi , Zhong Y. Cheng , Mehdi Narimani , Ye Zhang
Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.
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公开(公告)号：US10924025B2
公开(公告)日：2021-02-16
申请号：US16698392
申请日：2019-11-27
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Sarah Badawi , Zhong Y. Cheng , Mehdi Narimani , Ye Zhang
Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.
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公开(公告)号：US20200343821A1
公开(公告)日：2020-10-29
申请号：US16837037
申请日：2020-04-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Navid R. Zargari , Sarah Badawi , Zhong Y. Cheng , Mehdi Narimani , Ye Zhang
IPC: H02M5/458
Abstract: For a power supply with a reduced number of semiconductor devices, a transformer receives a three-phase primary voltage and steps the three-phase primary voltage up or down to a secondary voltage with a plurality of secondary winding sets to a plurality of first phase voltages, a plurality of second phase voltages, and a plurality of third phase voltages. A plurality of power cell sets each include a plurality of power cells cascaded connected. Each power cell comprises a rectifier and an inverter. The rectifier includes two first active switches that are serially connected and receive a phase voltage at a first switch midpoint, two second active switches that are serially connected and receive another phase voltage at a second switch midpoint, and two capacitors that are serially connected and receive another phase voltage at a capacitor midpoint between the capacitors.
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