公开(公告)号：US20220103090A1

公开(公告)日：2022-03-31

申请号：US17033442

申请日：2020-09-25

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Lixiang Wei ,  Peizhong Yi ,  Robert W. Reese ,  Brian P. Brown ,  Jatinkumar Patel

IPC: H02M7/217 ,  H02P27/06 ,  H02M1/08

Abstract: For open loop phase pre-charge, an apparatus includes a Switching Mode Power Supply (SMPS) charging diode and a charge generator. The SMPS charging diode pre-charges an SMPS to a regulation set point from at least one phase of an Alternating Current (AC) voltage. The charge generator is powered by the pre-charged SMPS. In response to detecting the regulation set point iteratively, the charge generator detects a specified phase angle of the AC voltage. In response to the specified phase angle, the charge generator iteratively generates a charging voltage during positive voltage interval that charges a Direct Current (DC) bus capacitor to a target DC bus voltage within a charging time interval. At least a portion of the charge generator comprises one or more of hardware and executable code, the executable code stored on one or more computer readable storage media.

公开(公告)号：US11984814B2

公开(公告)日：2024-05-14

申请号：US17033442

申请日：2020-09-25

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Lixiang Wei ,  Peizhong Yi ,  Robert W. Reese ,  Brian P. Brown ,  Jatinkumar Patel

IPC: H02P27/08 ,  H02M1/08 ,  H02M7/217 ,  H02P6/12 ,  H02P27/06 ,  H02M1/00

CPC classification number: H02M7/2173 ,  H02M1/083 ,  H02P27/06 ,  H02M1/0058 ,  H02P2201/01

Abstract: For open loop phase pre-charge, an apparatus includes a Switching Mode Power Supply (SMPS) charging diode and a charge generator. The SMPS charging diode pre-charges an SMPS to a regulation set point from at least one phase of an Alternating Current (AC) voltage. The charge generator is powered by the pre-charged SMPS. In response to detecting the regulation set point iteratively, the charge generator detects a specified phase angle of the AC voltage. In response to the specified phase angle, the charge generator iteratively generates a charging voltage during positive voltage interval that charges a Direct Current (DC) bus capacitor to a target DC bus voltage within a charging time interval. At least a portion of the charge generator comprises one or more of hardware and executable code, the executable code stored on one or more computer readable storage media.

公开(公告)号：US11716015B2

公开(公告)日：2023-08-01

申请号：US17174072

申请日：2021-02-11

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Bora Novakovic ,  Jatinkumar K. Patel ,  Rangarajan M. Tallam ,  Robert W. Reese

IPC: H02M1/36 ,  H02M3/06 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M1/36 ,  H02M3/06 ,  H02M3/158 ,  H02M1/0032

Abstract: A switch mode power supply includes a bootstrap circuit, control circuits, and an auxiliary winding coupled to the bootstrap circuit and configured to supply power to the control circuits after startup of the power supply. The bootstrap circuit is configured to supply power to the control circuits during startup and includes an isolation circuit to limit current flow between the starting capacitor and the control circuits while the starting capacitor is charged to a starting voltage by the high voltage input. During the initial charge of the starting capacitor, the control circuits do not have power to provide the initial functionality of the power supply. Once the starting capacitor is charged to the starting voltage, the isolation circuit is activated to allow current flow that powers the control circuits during the remainder of the startup until the auxiliary winding is able to power the control circuits.

公开(公告)号：US20220255421A1

公开(公告)日：2022-08-11

申请号：US17174072

申请日：2021-02-11

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Bora Novakovic ,  Jatinkumar K. Patel ,  Rangarajan M. Tallam ,  Robert W. Reese

IPC: H02M1/36 ,  H02M3/06 ,  H02M3/158

Abstract: A switch mode power supply includes a bootstrap circuit, control circuits, and an auxiliary winding coupled to the bootstrap circuit and configured to supply power to the control circuits after startup of the power supply. The bootstrap circuit is configured to supply power to the control circuits during startup and includes an isolation circuit to limit current flow between the starting capacitor and the control circuits while the starting capacitor is charged to a starting voltage by the high voltage input. During the initial charge of the starting capacitor, the control circuits do not have power to provide the initial functionality of the power supply. Once the starting capacitor is charged to the starting voltage, the isolation circuit is activated to allow current flow that powers the control circuits during the remainder of the startup until the auxiliary winding is able to power the control circuits.