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公开(公告)号：US20210123612A1
公开(公告)日：2021-04-29
申请号：US16965346
申请日：2018-02-05
Applicant: Mitsubishi Electric Corporation
Inventor： Takuya SHIMOMUGI , Keisuke MORI , Koichi ARISAWA , Takashi YAMAKAWA , Kenji IWAZAKI
Abstract: An outdoor machine includes a housing including a front panel with an opening formed therein; a blower disposed in the housing; a bell mouth disposed in the outer periphery of the blower and connected to the opening; a control board on which an electric component is mounted, the control board being provided in the housing; a heat radiation part that radiates heat generated by the electric component; and a vent deflector that covers the heat radiation part, and forms a ventilation flue through which air generated by the blower flows in the heat radiation part, in which the vent deflector 20 is not provided in a region between a virtual plane S and the front panel, the virtual plane S covering the entire periphery of an edge of the bell mouth and extending in parallel with the front panel.
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公开(公告)号：US20220085730A1
公开(公告)日：2022-03-17
申请号：US17423514
申请日：2019-03-11
Applicant: Mitsubishi Electric Corporation
Inventor： Kenji IWAZAKI , Koichi ARISAWA , Takuya SHIMOMUGI , Satoru ICHIKI , Keisuke UEMURA
Abstract: A converter device includes: a power conversion circuit including a reactor and a switching element, rectifying a voltage of alternating-current power supplied from an alternating-current power supply to a direct-current voltage, and boosting and outputting the direct-current voltage; a current detector detecting a current flowing in the reactor; a filter circuit filtering a first signal detected by the current detector; and a control unit generating a control signal on the basis of a carrier and a second signal generated by the filter circuit and controlling, on the basis of the control signal and with a first period, the switching element, the first period being a period of the carrier. The filter circuit cuts off a repetition frequency component in the first period and passes a repetition frequency component in a second period, the second period being longer than the first period.
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公开(公告)号：US20210242796A1
公开(公告)日：2021-08-05
申请号：US17273906
申请日：2018-09-28
Applicant: Mitsubishi Electric Corporation
Inventor： Keisuke UEMURA , Satoru ICHIKI , Takuya SHIMOMUGI , Koichi ARISAWA , Kenji IWAZAKI
Abstract: A power converting apparatus includes: a reactor that includes a first terminal and a second terminal, the first terminal being connected to an alternating-current power supply; a bridge circuit that is connected to the second terminal of the reactor, includes at least one or more switching elements, and converts an alternating-current voltage output from the alternating-current power supply into a direct-current voltage; a power-supply current detecting unit that detects a current from the alternating-current power supply; and a control unit that controls ON and OFF of the switching elements depending on a current value detected by the power-supply current detecting unit, in which two or more current thresholds for controlling ON and OFF of the switching elements are included.
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公开(公告)号：US20190305649A1
公开(公告)日：2019-10-03
申请号：US16072529
申请日：2016-04-27
Applicant: Mitsubishi Electric Corporation
Inventor： Norikazu ITO , Takuya SHIMOMUGI , Masahiro FUKUDA
IPC: H02K11/33 , H02K9/22 , H05K7/20 , H01L25/065 , H05K1/18 , H05K1/02 , F24F11/88 , H02M5/458 , H02P27/08
Abstract: A motor driving device that converts alternating-current power to direct-current power and drives a motor, the motor driving device including a printed circuit board having a first plate surface and a second plate surface, having an inverter module and an inverter module provided on the first plate surface, having a first power pattern provided on the second plate surface and connected to the inverter module, having a second power pattern provided on the second plate surface and connected to the inverter module, and having a jumper portion to connect the first power pattern and the second power pattern. A cross-sectional area of the jumper portion is larger than a cross-sectional area of the first power pattern or the second power pattern.
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5.发明申请公开(公告)号：US20170241691A1
公开(公告)日：2017-08-24
申请号：US15518649
申请日：2014-11-04
Applicant: Mitsubishi Electric Corporation
Inventor： Takashi YAMAKAWA , Kazunori HATAKEYAMA , Takuya SHIMOMUGI , Yosuke SHINOMOTO
Abstract: A heat pump apparatus includes a compressor compressing a refrigerant, a motor driving the compressor, an inverter device, and an inverter control unit controlling the inverter device. The inverter device includes the same number of bridge circuits as those of phases of the motor, and each of the bridge circuits includes plural pairs of series-connected switching elements. The pairs of switching elements are connected in parallel. The inverter device applies to the motor a high-frequency voltage of a frequency at which the motor does not rotate.
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Patent Agency Ranking
6.发明申请BACKFLOW PREVENTING DEVICE, POWER CONVERSION APPARATUS, MOTOR DRIVER, AND REFRIGERATING AND AIR-CONDITIONING APPARATUS 有权逆流防止装置，动力转换装置，电动驱动装置以及制冷和空调装置公开(公告)号：US20160204690A1
公开(公告)日：2016-07-14
申请号：US14901270
申请日：2013-07-02
Applicant: Mitsubishi Electric Corporation
Inventor： Takuya SHIMOMUGI , Koichi ARISAWA , Takashi YAMAKAWA , Keisuke UEMURA , Noriyuki MATSUBARA , Shinsaku KUSUBE , Kenta YUASA , Akihiro TSUMURA
CPC classification number: H02M1/32 , H02M3/156 , H02M3/158 , H02M2001/0051 , H02M2001/325 , H02P27/06 , H03K17/16 , H03K17/74 , Y02B70/1491
Abstract: A backflow preventing device includes a backflow preventing element that is connected between a power supply and a load and that prevents electric current from flowing backward from the load side toward the power supply side, a commutating device that performs a commutation operation for causing the electric current to flow to a commutation path connected in parallel with the backflow preventing element, and a controller that sets a time for performing the commutation operation and causes the commutating device to perform the commutation operation based on the set time. The backflow preventing device has a plurality of the commutation paths and has, for example, elements with small current-carrying capacities disposed in the commutation paths to achieve cost reduction and to cope with, for example, failures, thereby allowing for enhanced reliability for reducing recovery electric current.
Abstract translation: 防回流装置包括连接在电源和负载之间并且防止电流从负载侧向电源侧向后流动的防回流元件，进行用于使电流的换向操作的换向装置 流到与防回流元件并联连接的换向路径，以及控制器，其设定用于执行换向操作的时间，并使换向装置基于设定时间执行换向操作。 防回流装置具有多个换向路径，并且例如具有设置在换向路径中的具有小载流能力的元件，以实现成本降低并且例如应对故障，从而允许提高可靠性以减少 恢复电流。
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公开(公告)号：US20160156281A1
公开(公告)日：2016-06-02
申请号：US14901189
申请日：2013-07-02
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Koichi ARISAWA , Takuya SHIMOMUGI , Takashi YAMAKAWA , Keisuke UEMURA , Noriyuki MATSUBARA , Shinsaku KUSUBE , Kenta YUASA , Akihiro TSUMURA
CPC classification number: H02M7/539 , F25B49/025 , H01F27/006 , H01F27/323 , H02M3/158 , H02M2001/0051 , Y02B70/1491
Abstract: A power conversion device configured to convert electric power from a power source to a load, the power conversion device including: a voltage boosting device including a boost rectification unit configured to prevent backflow of a current from a side of the load to a side of the power source, the voltage boosting device being configured to change voltage of power from the power source to a predetermined voltage; and a commutation device including a transformer and configured to perform commutation operation, in the commutation operation, the transformer applying a voltage induced by a current flowing through a primary-side winding to a secondary-side winding, which is on an other path different from that for the voltage changing device, wherein the transformer includes at least part of windings that are wound such that an inter-winding distance is uniform.
Abstract translation: 一种电力转换装置，被配置为将电力从电源转换为负载，所述电力转换装置包括：升压装置，包括升压整流单元，所述升压整流单元被配置为防止电流从所述负载侧向所述负载侧流动 电源，所述升压装置被配置为将来自所述电源的电力的电压改变为预定电压; 以及包括变压器并且被配置为执行换向操作的换向装置，在换向操作中，变压器将由流过初级侧绕组的电流感应的电压施加到次级侧绕组，次级侧绕组 对于电压改变装置，其中变压器包括被卷绕的绕组的至少一部分，使得绕组间距离是均匀的。
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8.发明申请BACKFLOW PREVENTING DEVICE, POWER CONVERSION DEVICE, AND REFRIGERATION AIR-CONDITIONING APPARATUS 有权逆流防止装置，动力转换装置和制冷空气调节装置公开(公告)号：US20160049783A1
公开(公告)日：2016-02-18
申请号：US14780036
申请日：2014-03-18
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Takuya SHIMOMUGI , Koichi ARISAWA , Takashi YAMAKAWA , Keisuke UEMURA , Shinsaku KUSUBE , Kenta YUASA , Akihiro TSUMURA
IPC: H02H3/00
CPC classification number: H02H3/003 , H02M1/4225 , H02M3/158 , H02M2001/0051 , H02M2001/342 , Y02B70/126 , Y02B70/1491
Abstract: A backflow preventing device includes a backflow preventing element connected between a power source and a load, for preventing a backflow of a current from the load side to the power source side, a commutation device configured to perform a commutation operation of causing a current to flow through an other path connected in parallel to the backflow preventing element, and a controller configured to change a pulse width of a commutation drive signal for controlling the commutation device to perform the commutation operation based on a current flowing through the backflow preventing element, and transmitting the commutation drive signal having the changed pulse width to the commutation device. The controller transmits the pulse to the commutation device only for a necessary time period so that the commutation device performs the commutation operation, to thereby reduce electric power relating to the commutation operation not contributing to the power conversion.
Abstract translation: 防回流装置包括连接在电源和负载之间的防回流元件，用于防止电流从负载侧回流到电源侧;换流装置，被配置为执行使电流流动的换向操作 通过与防回流元件并联连接的另一路径，以及控制器，被配置为基于流过防回流元件的电流来改变换向驱动信号的脉冲宽度，以控制换向装置执行换向操作，并且发送 换向驱动信号具有改变的脉冲宽度到换向装置。 控制器仅在必要的时间周期内将脉冲发送到换向装置，使得换向装置执行换向操作，从而减少与对电力转换无贡献的换向操作相关的电力。
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公开(公告)号：US20240063708A1
公开(公告)日：2024-02-22
申请号：US18259340
申请日：2021-02-12
Applicant: Mitsubishi Electric Corporation
Inventor： Koichi ARISAWA , Takuya SHIMOMUGI , Takaaki TAKAHARA , Haruka MATSUO , Keisuke UEMURA
CPC classification number: H02M1/12 , H02M1/4283 , H02M1/0009 , H02M1/16 , H02M1/4225 , H02M5/4585 , H02P27/12 , H02M1/143 , F25B49/025 , H02P2201/07 , H02P2201/09 , H02P2201/15 , F25B2600/021
Abstract: A power converter includes: a rectifying and boosting unit that rectifies first alternating-current power supplied from a commercial power supply and boosts a voltage of the first alternating-current power; a capacitor connected to an output end of the rectifying and boosting unit; an inverter to convert power output from the rectifying and boosting unit and the capacitor into second alternating-current power, and output the second alternating-current power to a device; and a control unit that reduces a current flowing through the capacitor by controlling the rectifying and boosting unit and by controlling the inverter such that the inverter outputs, to the device, the second alternating-current power containing a ripple dependent on a ripple of power flowing from the rectifying and boosting unit into the capacitor. The control unit controls in accordance with a load state.
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10.发明申请公开(公告)号：US20210328538A1
公开(公告)日：2021-10-21
申请号：US17271234
申请日：2018-09-28
Applicant: Mitsubishi Electric Corporation
Inventor： Satoru ICHIKI , Takuya SHIMOMUGI , Koichi ARISAWA , Keisuke UEMURA , Kenji IWAZAKI
IPC: H02P29/024 , F25B31/02
Abstract: A direct-current power supply device includes a reactor, a bridge circuit that converts alternating-current voltage output from an alternating-current power supply, which is connected to the reactor, into direct-current voltage, a capacitor that smoothes the output voltage of the bridge circuit, a current detector that detects a first current flowing as an alternating current between the alternating-current power supply and the bridge circuit, a current detector that detects a second current flowing as a direct current between the bridge circuit and the capacitor, an overcurrent determination unit that determines on the basis of a detected first current value whether or not the first current is an overcurrent, and an overcurrent determination unit that determines on the basis of a detected second current value whether or not the second current is an overcurrent. The bridge circuit stops operating when a determination result of either the overcurrent determination unit or the overcurrent determination unit indicates an overcurrent.
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