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公开(公告)号：US09584024B2
公开(公告)日：2017-02-28
申请号：US13925579
申请日：2013-06-24
Applicant: Illinois Tool Works Inc.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
CPC classification number: B23K9/093 , B23K9/1043 , H02M1/08 , H02M3/285 , H02M3/33523
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
Abstract translation: 用于焊接，切割和类似操作的电源包括双双开关正转变换器。 该转换器具有并联耦合的两个逆变器电路，但被控制以交替的方式提供输出功率。 为了避免电路的“走动”（这可能导致不同的占空比和负载共享的不平衡），控制信号被确定并施加到第一个反相器电路，并且监视第一电路的“接通”时间， 例如通过增加计数器来确定第一电路“接通”的时钟周期数。 然后使用相同的持续时间来指示来自第二反相器电路的输出。 因此，无论总输出功率的变化如何，两个电路的占空比被确保相同。
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公开(公告)号：US20170129034A1
公开(公告)日：2017-05-11
申请号：US15412620
申请日：2017-01-23
Applicant: ILLINOIS TOOL WORKS INC.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
CPC classification number: B23K9/093 , B23K9/1043 , H02M1/08 , H02M3/285 , H02M3/33523
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
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公开(公告)号：US10766088B2
公开(公告)日：2020-09-08
申请号：US16298510
申请日：2019-03-11
Applicant: Illinois Tool Works Inc.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
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Patent Agency Ranking
公开(公告)号：US20190201996A1
公开(公告)日：2019-07-04
申请号：US16298510
申请日：2019-03-11
Applicant: Illinois Tool Works Inc.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
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公开(公告)号：US20180339376A1
公开(公告)日：2018-11-29
申请号：US15604906
申请日：2017-05-25
Applicant: Illinois Tool Works Inc.
Inventor： Craig Knoener , Ron Dewayne Woodward , Mary Divya Poulose
Abstract: A welding-type power supply includes a fan configured to operate at multiple fan speeds. A controller of the welding-type power supply is configured to identify a welding parameter of the welding-type power supply, and determine an operating fan speed of the multiple fan speeds based on the welding parameter.
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公开(公告)号：US11554450B2
公开(公告)日：2023-01-17
申请号：US15604906
申请日：2017-05-25
Applicant: Illinois Tool Works Inc.
Inventor： Craig Knoener , Ron Dewayne Woodward , Mary Divya Poulose
Abstract: A welding-type power supply includes a fan configured to operate at multiple fan speeds. A controller of the welding-type power supply is configured to identify a welding parameter of the welding-type power supply, and determine an operating fan speed of the multiple fan speeds based on the welding parameter.
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公开(公告)号：US10226832B2
公开(公告)日：2019-03-12
申请号：US15412620
申请日：2017-01-23
Applicant: ILLINOIS TOOL WORKS INC.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
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公开(公告)号：US20140376268A1
公开(公告)日：2014-12-25
申请号：US13925579
申请日：2013-06-24
Applicant: Illinois Tool Works Inc.
Inventor： Alan A. Manthe , Jason Alan Dunahoo , Craig Steven Knoener , Mary Divya Poulose
IPC: H02M3/28
CPC classification number: B23K9/093 , B23K9/1043 , H02M1/08 , H02M3/285 , H02M3/33523
Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
Abstract translation: 用于焊接，切割和类似操作的电源包括双双开关正转变换器。 该转换器具有并联耦合的两个逆变器电路，但被控制以交替的方式提供输出功率。 为了避免电路的“走动”（这可能导致不同的占空比和负载共享的不平衡），控制信号被确定并施加到第一个反相器电路，并且监视第一电路的“接通”时间， 例如通过增加计数器来确定第一电路“接通”的时钟周期数。 然后使用相同的持续时间来指示来自第二反相器电路的输出。 因此，无论总输出功率的变化如何，两个电路的占空比被确保相同。
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