- 专利标题： POWER SUPPLY CIRCUIT, CONTROL METHOD, AND PROGRAM
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申请号： EP18210123.8申请日： 2018-12-04
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公开(公告)号： EP3499697A1公开(公告)日： 2019-06-19
- 发明人: Oono, Kenzo , Sumiya, Atsuyuki
- 申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
- 申请人地址： 16-5, Konan 2-chome Minato-ku 108-8215 Tokyo JP
- 专利权人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
- 当前专利权人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
- 当前专利权人地址： 16-5, Konan 2-chome Minato-ku 108-8215 Tokyo JP
- 代理机构： Henkel, Breuer & Partner
- 优先权： JP2017236112 20171208
- 主分类号： H02M1/36
- IPC分类号： H02M1/36 ; H02H3/253 ; H02M1/42 ; H02H9/02 ; H02M7/12 ; F24F11/30
摘要：
A power supply circuit (1) including:
a three-phase AC power supply (10) that includes a first terminal, a second terminal and a third terminal corresponding to three phases;
a rectifier circuit (20) configured to rectify power of the three-phase AC power supply;
a capacitor (C1) configured to smooth an output voltage of the rectifier circuit;
a first switch (SW2) configured to switch connection and disconnection of the rectifier circuit and the first terminal;
a second switch (SW3) configured to switch connection and disconnection of the rectifier circuit and the second terminal;
a third switch (SW4) configured to switch connection and disconnection of the rectifier circuit and the third terminal;
a fourth switch (SW1) and an inrush current suppression circuit (Rl) which are connected together in series and are provided in parallel with the first switch;
a control unit (40) which is configured to cause the capacitor to be fully charged by performing control of what to bring the fourth switch and one of the second switch and the third switch into a closed state, and to bring the first switch and the other one of the second switch and the third switch into an open state; and
a determination unit configured to determine an open-phase in the three-phase AC power supply on the basis of an output voltage of the rectifier circuit in each state of the first switch, the second switch, the third switch, and the fourth switch controlled by the control unit.
a three-phase AC power supply (10) that includes a first terminal, a second terminal and a third terminal corresponding to three phases;
a rectifier circuit (20) configured to rectify power of the three-phase AC power supply;
a capacitor (C1) configured to smooth an output voltage of the rectifier circuit;
a first switch (SW2) configured to switch connection and disconnection of the rectifier circuit and the first terminal;
a second switch (SW3) configured to switch connection and disconnection of the rectifier circuit and the second terminal;
a third switch (SW4) configured to switch connection and disconnection of the rectifier circuit and the third terminal;
a fourth switch (SW1) and an inrush current suppression circuit (Rl) which are connected together in series and are provided in parallel with the first switch;
a control unit (40) which is configured to cause the capacitor to be fully charged by performing control of what to bring the fourth switch and one of the second switch and the third switch into a closed state, and to bring the first switch and the other one of the second switch and the third switch into an open state; and
a determination unit configured to determine an open-phase in the three-phase AC power supply on the basis of an output voltage of the rectifier circuit in each state of the first switch, the second switch, the third switch, and the fourth switch controlled by the control unit.
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