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公开(公告)号：US10807184B2
公开(公告)日：2020-10-20
申请号：US16082972
申请日：2017-03-13
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Lei Zhu , Wenyan Fan
Abstract: The present invention provides an SiC inverted plasma cutting power supply, which is characterized in that: the SiC inverted plasma cutting power supply comprises a main circuit and a closed-loop control circuit; the main circuit comprises a sequentially connected noise suppression module, a power-frequency rectification and filtering module, an SiC inverter module, a power transformer, an SiC rectification and smoothing module and a non-contact arc initiation module, wherein the noise suppression module is connected to an alternating-current input power supply, and the SiC rectification and smoothing module and the non-contact arc initiation module are respectively connected to a load; the closed-loop control circuit comprises a man-machine interaction module, a DSC controller, a failure diagnosis and protection module, an SiC high-frequency drive module and a load electrical signal detection module. The power supply has high inverting frequency, small size, light weight, lower raw material consumption, high energy efficiency, an obvious energy saving effect and excellent dynamic characteristics, and can be applied on both a low-power occasion and medium and high power cutting occasions in a stable and reliable manner.
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Patent Agency Ranking
2.发明申请公开(公告)号：US20180345400A1
公开(公告)日：2018-12-06
申请号：US16049956
申请日：2018-07-31
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Wenyan Fan , Chun Jiang , Qian Wang
Abstract: The invention provides a DSC-based full-digital SiC inversion type multi-function argon arc welding power supply, which includes a main circuit and a DSC control circuit; the main circuit includes a common mode noise suppression module, a power frequency rectification and filter module, a SiC inversion and commutation module, power transformer, a SiC rectification and smoothing module and a non-contact arc ignition module connected in sequence and are respectively connected to external arc load; the DSC control circuit includes a DSC minimum system, a human-machine interaction module, a fault diagnosis and protection module, a SiC high-frequency drive module connected to SiC inversion and commutation module, and an electrical load signal detection module connected to the arc load. The argon arc welding power supply has a simple structure, high control accuracy, fast response, small size, high efficiency, low energy consumption and excellent process adaptability, which can improve the quality of welding process.
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公开(公告)号：US20220118542A1
公开(公告)日：2022-04-21
申请号：US17422262
申请日：2019-10-23
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Qiming Zhong , Fangxiang Xie , Wenyan Fan , Zhuo Luo
Abstract: A dual-pulse MIG welding power source based on SiC power devices may include a main circuit and a digital control circuit. The main circuit may include a power frequency rectifier filter module, a first SiC high frequency inverter module, a first high frequency transformer, and a first SiC fast full-wave rectifier filter module connected sequentially. The power frequency rectifier filter module may be connected to a three-phase AC power supply, and the first SiC fast full-wave rectifier filter module may be connected to a load. The digital control circuit may include a digital human-machine interaction module, a core control module, a SiC high-frequency drive module, a load voltage and current detection feedback module, and a wire feeding control module. The digital human-machine interaction module may be connected to the core control module.
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公开(公告)号：US20190084073A1
公开(公告)日：2019-03-21
申请号：US16082972
申请日：2017-03-13
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Lei Zhu , Wenyan Fan
CPC classification number: B23K10/006 , B23K9/013 , B23K9/1006 , B23K9/1012 , B23K10/00
Abstract: The present invention provides an SiC inverted plasma cutting power supply, which is characterized in that: the SiC inverted plasma cutting power supply comprises a main circuit and a closed-loop control circuit; the main circuit comprises a sequentially connected noise suppression module, a power-frequency rectification and filtering module, an SiC inverted commutation module, a power transformer, an SiC rectification and smoothing module and a non-contact arc striking module, wherein the noise suppression module is connected to an alternating-current input power supply, and the SiC rectification and smoothing module and the non-contact arc striking module are respectively connected to a load; the closed-loop control circuit comprises a man-machine interaction module, a DSC controller, a failure diagnosis and protection module, an SiC high-frequency drive module and a load electrical signal detection module. The power supply has high inverting frequency, small size, light weight, lower raw material consumption, high energy efficiency, an obvious energy saving effect and excellent dynamic characteristics, and can be applied on both a low-power occasion and medium and high power cutting occasions in a stable and reliable manner.
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公开(公告)号：US12103118B2
公开(公告)日：2024-10-01
申请号：US17422262
申请日：2019-10-23
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Qiming Zhong , Fangxiang Xie , Wenyan Fan , Zhuo Luo
Abstract: A dual-pulse MIG welding power source based on SiC power devices may include a main circuit and a digital control circuit. The main circuit may include a power frequency rectifier filter module, a first SiC high frequency inverter module, a first high frequency transformer, and a first SiC fast full-wave rectifier filter module connected sequentially. The power frequency rectifier filter module may be connected to a three-phase AC power supply, and the first SiC fast full-wave rectifier filter module may be connected to a load. The digital control circuit may include a digital human-machine interaction module, a core control module, a SiC high-frequency drive module, a load voltage and current detection feedback module, and a wire feeding control module. The digital human-machine interaction module may be connected to the core control module.
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公开(公告)号：US11298771B2
公开(公告)日：2022-04-12
申请号：US16049956
申请日：2018-07-31
Applicant: South China University of Technology
Inventor： Zhenmin Wang , Wenyan Fan , Chun Jiang , Qian Wang
Abstract: The invention provides a DSC-based full-digital SiC inversion type multi-function argon arc welding power supply, which includes a main circuit and a DSC control circuit; the main circuit includes a common mode noise suppression module, a power frequency rectification and filter module, a SiC inversion and commutation module, power transformer, a SiC rectification and smoothing module and a non-contact arc ignition module connected in sequence and are respectively connected to external arc load; the DSC control circuit includes a DSC minimum system, a human-machine interaction module, a fault diagnosis and protection module, a SiC high-frequency drive module connected to SiC inversion and commutation module, and an electrical load signal detection module connected to the arc load. The argon arc welding power supply has a simple structure, high control accuracy, fast response, small size, high efficiency, low energy consumption and excellent process adaptability, which can improve the quality of welding process.
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