发明申请
- 专利标题: POWER SUPPLY AND ARC PROCESSING POWER SUPPLY
- 专利标题(中): 电源和电弧加工电源
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申请号: US13306398申请日: 2011-11-29
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公开(公告)号: US20120140524A1公开(公告)日: 2012-06-07
- 发明人: Haruhiko Manabe , Tetsuya Etoh , Hirotsune Tajima , Kazutoshi Nagami , Masayoshi Kureha
- 申请人: Haruhiko Manabe , Tetsuya Etoh , Hirotsune Tajima , Kazutoshi Nagami , Masayoshi Kureha
- 申请人地址: JP Osaka-shi
- 专利权人: DAIHEN CORPORATION
- 当前专利权人: DAIHEN CORPORATION
- 当前专利权人地址: JP Osaka-shi
- 优先权: JP2010-268217 20101201; JP2011-224248 20111011
- 主分类号: H02M3/335
- IPC分类号: H02M3/335
摘要:
A power supply that performs output PWM control and PSM control. The PWM control is performed when the required output is such that a control signal is set with a larger ON pulse width than a predetermined narrow pulse width allowing for sufficient activation of switching elements in an inverter circuit and an auxiliary switching circuit. The PSM control is performed when the required output is such that the control signal for each switching element is set with a smaller ON pulse width than the predetermined narrow pulse width. The PSM control adjusts the phase of a control pulse signal so that the ON pulse is fixed to the predetermined narrow pulse width.