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公开(公告)号：EP2058861A4
公开(公告)日：2011-10-12
申请号：EP07805967
申请日：2007-08-22
Applicant: DAIKIN IND LTD
Inventor： SEKIMOTO MORIMITSU , HAGA HITOSHI , SAKAKIBARA KENICHI , KAWASHIMA REIJI , MECHI ABDALLAH , MAEDA TOSHIYUKI
CPC classification number: H01L25/16 , H01L23/647 , H01L24/48 , H01L25/072 , H01L2224/48091 , H01L2224/48227 , H01L2224/484 , H01L2224/4899 , H01L2924/00014 , H01L2924/01004 , H01L2924/01005 , H01L2924/01006 , H01L2924/01014 , H01L2924/01029 , H01L2924/01031 , H01L2924/01033 , H01L2924/01078 , H01L2924/01082 , H01L2924/07802 , H01L2924/13055 , H01L2924/13091 , H01L2924/15747 , H01L2924/181 , H01L2924/19041 , H01L2924/19107 , H01L2924/3011 , H05K1/0201 , H05K1/0204 , H05K1/141 , H05K1/18 , H05K2201/062 , H05K2201/09263 , H05K2201/09972 , H05K2201/10022 , H05K2201/10166 , H05K2203/081 , H01L2924/00 , H01L2224/45099 , H01L2924/00012
Abstract: In the case where a chip is made of wide band gap semiconductor, a power conversion apparatus is obtained in which a component having a low heat resistant temperature is prevented from receiving thermal damage by heat generated at the chip. In a configuration including: a chip portion (20) including a chip (21) made of wide band gap semiconductor and a member (22, 23) having a heat resistant temperature equal to or higher than that of the chip (21); and a peripheral component (25) arranged in the vicinity of the chip portion (20) and having a heat resistant temperature lower than that of the chip (21). The chip (21) and the peripheral component (25) are thermally insulated from each other so that the temperature of the peripheral component (25) does not exceed the heat resistant temperature of the peripheral component (25).
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公开(公告)号：EP2903148A4
公开(公告)日：2017-03-08
申请号：EP13842130
申请日：2013-09-26
Applicant: DAIKIN IND LTD
Inventor： YAMASHITA NAOYA , MAEDA TOSHIYUKI
CPC classification number: H02M5/458 , H02J3/36 , H02M1/4225 , H02M7/08 , Y02B70/126
Abstract: In a direct power converter employing a boost chopper, a peak current flowing an inductor of the boost chopper is reduced. When a rectifying duty dr, a discharge duty dc, a voltage between both ends Vc of a capacitor (34), and a rectified voltage Vrec of an AC voltage Vin are introduced, a virtual DC link voltage Vdc in an inverter (6) is expressed by dc€¢Vc+dr€¢Vrec. The discharge duty dc is a time ratio of continuity of a switch (41). The rectifying duty dr has a value obtained by subtracting the discharge duty dc and a zero voltage duty dz from 1. The zero voltage duty dz is a time ratio for the inverter (6) to adopt a zero voltage vector regardless of a magnitude of a voltage to be output from the inverter (6). The capacitor (34) is charged in the boost chopper (3) at a part of a period during which the virtual DC link voltage Vdc is larger than the rectified voltage Vrec.
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公开(公告)号：EP2506273A4
公开(公告)日：2017-01-25
申请号：EP10832850
申请日：2010-11-25
Applicant: DAIKIN IND LTD
Inventor： KIDO NAOHIRO , MAEDA TOSHIYUKI
CPC classification number: H01F27/10 , H01F27/18 , H01F37/00 , H01F2003/103
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公开(公告)号：EP2518422A4
公开(公告)日：2016-11-02
申请号：EP10838958
申请日：2010-12-22
Applicant: DAIKIN IND LTD
Inventor： KIDO NAOHIRO , MAEDA TOSHIYUKI
CPC classification number: F25B31/006 , F25B13/00 , F25B2313/021 , F25B2600/021 , Y02B30/741
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公开(公告)号：EP1480326A4
公开(公告)日：2016-10-12
申请号：EP03742673
申请日：2003-02-25
Applicant: DAIKIN IND LTD
Inventor： MAEDA TOSHIYUKI
CPC classification number: H02P27/08 , H02P6/28 , H02P23/0004 , H02P27/045
Abstract: A voltage detection section (11a) and current detection section (11b) detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to a position detection section (12). An angular speed output from the position detection section (12) is supplied to a differentiator (13) to output an angular acceleration. A fundamental wave component extraction section (14) extracts a fundamental wave component of the angular acceleration, and the extracted fundamental wave component is supplied to an amplitude adjustment section (15). The output of the amplitude adjustment section (15) is subtracted from the average current command by a subtraction section (16). This subtraction result, current detection value, and the rotor position from the position detection section (12) are supplied to a current control section (17) to carry out the current control operation so as to obtain a current command. The current command is supplied to an inverter (4) to control the voltage and current so as to suppress the speed changing due to the load torque changing. Thus, stability is improved, and decreasing in cost is realized.
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公开(公告)号：EP3171502A4
公开(公告)日：2017-12-06
申请号：EP15821840
申请日：2015-07-21
Applicant: DAIKIN IND LTD
Inventor： YAMASHITA NAOYA , MAEDA TOSHIYUKI
Abstract: In a direct power converter including a boost chopper, an average value or an effective value of a current flowing in an inductor of the boost chopper is reduced. When a rectifying duty (dr), a discharge duty (dc), a voltage between both ends (Vc) of a capacitor (34), and a rectified voltage (Vrec) of an AC voltage (Vin) are introduced, a virtual DC link voltage (Vdc) in an inverter (6) is expressed by dc·Vc + dr·Vrec. The discharge duty (dc) is a time ratio at which a switch (41) is conductive. The rectifying duty (dr) has a value obtained by subtracting the discharge duty (dc) and a zero voltage duty (dz) from 1. The zero voltage duty (dz) is a time ratio at which the inverter (6) adopts a zero voltage vector irrespective of the magnitude of a voltage output from the inverter (6). In a boost chopper (3), the capacitor (34) is charged during a part of a period during which the virtual DC link voltage (Vdc) is greater than the rectified voltage (Vrec).
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公开(公告)号：EP2667502A4
公开(公告)日：2017-08-09
申请号：EP12736369
申请日：2012-01-18
Applicant: DAIKIN IND LTD
Inventor： SEKIMOTO MORIMITSU , TANIGUCHI TOMOISA , HIBINO HIROSHI , MAEDA TOSHIYUKI
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公开(公告)号：EP2058937A4
公开(公告)日：2017-07-26
申请号：EP07806255
申请日：2007-08-29
Applicant: DAIKIN IND LTD
Inventor： SEKIMOTO MORIMITSU , HAGA HITOSHI , MECHI ABDALLAH , KAWASHIMA REIJI , SAKAKIBARA KENICHI , MAEDA TOSHIYUKI
IPC: H02P6/10 , H02P23/30 , H02P29/032 , H02P29/50
CPC classification number: H02P23/30 , H02P29/032 , H02P29/50
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公开(公告)号：EP1748265A4
公开(公告)日：2010-11-03
申请号：EP05733988
申请日：2005-04-22
Applicant: DAIKIN IND LTD
Inventor： ISHIKAWA SATOSHI , HIKAWA TAKESHI , MAEDA TOSHIYUKI , MATSUNO SUMIKAZU
CPC classification number: H02P27/08 , F04B49/06 , F25B49/025 , F25B2500/26 , F25B2600/021 , Y02B30/741
Abstract: [Problem] To reduce a leakage current when a motor for driving a compressor is energized, with the compressor unoperated. [Means for Solution] Setting the carrier frequency of an inverter at a value lower than that used during normal operation to cause phase interruption electrification of the motor.
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公开(公告)号：EP2568597A4
公开(公告)日：2017-05-31
申请号：EP11777385
申请日：2011-04-28
Applicant: DAIKIN IND LTD
Inventor： HARADA YOSHIYUKI , MAEDA TOSHIYUKI
IPC: H02P27/06 , F25B13/00 , F25B31/00 , F25B49/00 , F25B49/02 , H02M1/32 , H02M1/44 , H02M7/48 , H02P27/08 , H02P29/68
CPC classification number: H02P27/08 , F25B13/00 , F25B31/006 , F25B49/025 , F25B2313/003 , F25B2313/021 , F25B2600/021 , F25B2600/024 , H02M1/44 , H02M2001/327 , H02P29/68 , Y02B30/741
Abstract: A power module (61) is attached to a refrigerant cooler (81) in contact with the refrigerant cooler (81), and cooling is performed by dissipating heat to the refrigerant flowing in the refrigerant cooler (81). A controller (60) outputs a driving signal to a drive circuit (31) to reduce the number of switching operations of switching elements (37).
Abstract translation: 在与制冷剂冷却器81接触的制冷剂冷却器81上安装有功率模块61，通过向在制冷剂冷却器81内流动的制冷剂散热而进行冷却。 控制器（60）向驱动电路（31）输出驱动信号以减少开关元件（37）的开关操作次数。
