公开(公告)号：US10295213B2

公开(公告)日：2019-05-21

申请号：US15558006

申请日：2015-06-26

申请人： Mitsubishi Electric Corporation

发明人： Yasushi Makino ,  Kenta Owada

IPC分类号： F24F11/30 ,  F25B49/02 ,  F24F11/62 ,  F24F11/46 ,  F24F11/85 ,  H02M7/04

摘要： An air conditioning apparatus, being a power efficient and highly resistant to external noise, includes: an outdoor device; and indoor devices. The outdoor device includes: a first current path, through which AC power is supplied; and a second current path, through which AC power is supplied from the AC power supply to the control-power-supply generation unit through a first noise reduction unit, a second outdoor power-feed switching relay, and a surge-current suppression resistor. When there is a possibility an inrush current to the control-power-supply generation unit to be generated, the outdoor device supplies AC power of the AC power supply to the control-power-supply generation unit through the first current path. When there is not a possibility for an inrush current to the control-power-supply generation unit to be generated, the outdoor device supplies AC power of the AC power supply to the control-power-supply generation unit through the second current path.

公开(公告)号：US10126033B2

公开(公告)日：2018-11-13

申请号：US15030397

申请日：2015-01-13

申请人： Mitsubishi Electric Corporation

发明人： Yasushi Makino ,  Keiichiro Shizu ,  Kenta Owada

IPC分类号： F25B49/02 ,  F24F1/20 ,  H02M1/42 ,  F24F1/40 ,  H02M1/36 ,  H02M1/12 ,  H02M7/08 ,  H02M1/00

摘要： A power conversion device includes a first AC-DC conversion section generating DC voltage applied to a compressor drive section, a first DC-voltage smoothing section smoothing DC voltage, a first noise reduction section having one end connected to an AC power source and the other end connected to the first AC-DC conversion section, a second noise reduction section disposed between the first noise reduction section and the first AC-DC conversion section, an inrush-current inhibition circuit (a first inrush-current inhibition resistor and a rectifier diode) connected in parallel with the second noise reduction section and the first AC-DC conversion section for inhibiting inrush current from flowing to the first DC-voltage smoothing section, a first AC power-source relay opening/closing a power supply path to the inrush-current inhibition circuit, and a second AC power-source relay opening/closing a power supply path to the second noise reduction section.

公开(公告)号：US10128649B2

公开(公告)日：2018-11-13

申请号：US15535474

申请日：2015-03-11

申请人： Mitsubishi Electric Corporation

发明人： Yasushi Makino ,  Kenta Owada

IPC分类号： H02H7/125 ,  H02M3/155 ,  H02M7/217 ,  H01L29/16 ,  H01L29/20 ,  H02M7/06 ,  H02M1/42 ,  H02H9/00 ,  H02H3/24 ,  H02M1/00

摘要： A power supply device includes a resistor that limits an electric current supplied from an AC power supply, a switching unit that is connected in parallel with the resistor, a rectifier circuit unit that is connected to a subsequent stage of the resistor and the switching unit and rectifies an AC voltage of the AC power supply, a booster circuit unit, a DC-voltage detection unit that detects a DC voltage output from the booster circuit unit, an AC voltage detection unit, a protection setting unit that compares a first protection voltage calculated on the basis of the boosting level by the booster circuit unit with a second protection voltage calculated based on the AC voltage detected by the AC-voltage detection unit and sets either one as a protection voltage, and a control unit that opens the switching unit when the DC voltage falls below the protection voltage and stops boosting.