WO2008066000A1 - Chargeur d'alimentation électrique et procédé de chargement d'alimentation électrique - Google Patents

Chargeur d'alimentation électrique et procédé de chargement d'alimentation électrique Download PDF

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Publication number
WO2008066000A1
WO2008066000A1 PCT/JP2007/072773 JP2007072773W WO2008066000A1 WO 2008066000 A1 WO2008066000 A1 WO 2008066000A1 JP 2007072773 W JP2007072773 W JP 2007072773W WO 2008066000 A1 WO2008066000 A1 WO 2008066000A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
capacitor
current limiting
switch
power
Prior art date
Application number
PCT/JP2007/072773
Other languages
English (en)
Japanese (ja)
Inventor
Takeshi Kokura
Original Assignee
Daikin Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries, Ltd. filed Critical Daikin Industries, Ltd.
Publication of WO2008066000A1 publication Critical patent/WO2008066000A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/062—Avoiding or suppressing excessive transient voltages or currents

Definitions

  • the present invention relates to a charging device for a power supply device and a charging method for the power supply device.
  • a large-capacity smoothing capacitor is used for an inverter used in an air conditioner. Therefore, the smoothing capacitor is charged before the normal operation.
  • Patent Document 1 Such a smoothing capacitor charging operation is disclosed in Patent Document 1.
  • a power switch and a main power transformer are connected in series between an AC power source and a power converter (consisting of a rectifier circuit, a smoothing capacitor, and an inverter).
  • a charging transformer, a charging switch, and a current limiting resistor are connected in series with a pair of the power switch and the main power transformer.
  • the power switch is turned off and the charging switch is turned on to charge the smoothing capacitor via the charging transformer and the current limiting resistor.
  • Patent Document 1 Japanese Patent Laid-Open No. 2006-129571
  • Patent Document 1 charges the smoothing capacitor via the current limiting resistor, so that there is a problem in that power consumption occurs at the current limiting resistor when the smoothing capacitor is charged.
  • an object of the present invention is to provide a charging device for a power supply device that can reduce power consumption.
  • a first aspect of the charging device of the power supply device includes a rectifying unit (11) that rectifies an AC voltage from the AC power source (E1) and converts the rectified voltage into a direct current, and a DC voltage from the rectifying unit.
  • a charging device (2) of a power supply device (1) having a smoothing capacitor (13) that smoothes and supplies the load to a load (14, Ml), and is connected between the AC power supply and the rectifying unit Current-limiting capacitor (2 2), a switch that connects the AC power supply and the rectifier through the current-limiting capacitor, and a switch that connects the AC power supply and the rectifier bypassing the current-limiting capacitor.
  • a rectifying unit (11) that rectifies an AC voltage from the AC power source (E1) and converts the rectified voltage into a direct current, and a DC voltage from the rectifying unit.
  • a charging device (2) of a power supply device (1) having a smoothing capacitor (13) that smoothes and supplies the load to a load (14, Ml), and is connected between the
  • a second aspect of the power supply device charging device is the power supply device charging device according to the first aspect, wherein the load is a compressor driving motor (Ml) used in an air conditioner. ) Is an inverter (14) that supplies an alternating current.
  • Ml compressor driving motor
  • a third aspect of the power supply apparatus charging device is the power supply apparatus charging apparatus according to the first or second aspect, wherein the switch unit includes the AC power supply and the rectifying unit. And a power switch (SW1) provided on one of the output lines (R, S, T) connecting between the two and a branch from one of the output lines, bypassing the power switch and again A line (23) provided with one of the output lines and provided with the current-limiting capacitor, and a current-limiting switch (SW2) connected in series with the current-limiting capacitor on the line.
  • SW1 provided on one of the output lines (R, S, T) connecting between the two and a branch from one of the output lines, bypassing the power switch and again
  • a line (23) provided with one of the output lines and provided with the current-limiting capacitor
  • SW2 current-limiting switch
  • a charging device for a power supply device is the charging device for a power supply device according to the first or second aspect, wherein the AC power supply has a neutral point (P1).
  • the smoothing capacitor is composed of a first smoothing capacitor (13a) and a second smoothing capacitor (13b) connected in series on the output side of the rectifying unit, and the current limiting capacitor. Is connected between the neutral point and the connection point (P2) of the first smoothing capacitor and the second smoothing capacitor and on the side opposite to the rectifying unit, and the switch unit is A power switch (SW1) provided on one of the output lines connecting the AC power source and the input side of the rectifier without passing through a neutral point, and the neutral point and the connection point. And a current limiting switch connected in series with the current limiting capacitor.
  • a first aspect of the method for charging the power supply device includes a rectifying unit (11) that rectifies an AC voltage from an AC power source (E1) and converts the AC voltage into a DC voltage, and a DC voltage from the rectifying unit. And a smoothing capacitor (13) for smoothing and supplying the load (14, Ml) to the load (14, Ml), wherein the AC power is supplied to the load before the AC power is supplied to the load.
  • the smoothing capacitor is charged through a current-limiting capacitor (22) connected to one of output lines (R, S, T) connecting the power source and the rectifier.
  • a second aspect of the method of charging the power supply device according to the present invention is the power supply device according to the first aspect.
  • the load is an inverter (14) for supplying an alternating current to a compressor driving motor (Ml) used in an air conditioner.
  • the current-limiting capacitor has a small resistance, so unnecessary power consumption can be reduced.
  • FIG. 1 is a schematic configuration diagram of a charging device of a power conversion device according to an embodiment.
  • FIG. 2 is a diagram showing a charging voltage of a smoothing capacitor through a current limiting capacitor.
  • FIG. 3 is a diagram illustrating a charging voltage of a smoothing capacitor through a current limiting resistor.
  • FIG. 4 is a schematic configuration diagram of a charging device of the power conversion device according to the embodiment.
  • FIG. 5 is a schematic configuration diagram of a charging device of the power conversion device according to the embodiment.
  • FIG. 6 is a schematic configuration diagram of a charging device of the power conversion device according to the embodiment.
  • FIG. 1 shows a schematic configuration diagram of a motor drive device using a power supply device charging device according to the present invention.
  • the motor drive device includes a power supply device 1, a charging device 2, an inverter 14, an AC power supply E1, a motor Ml, and a switch control unit 3.
  • the motor driving device drives a compressor in an air conditioner.
  • the AC power supply El supplies an AC voltage between the output lines R, S, and T.
  • the charging device 2 includes a switch unit 21 and a current limiting capacitor 22.
  • the switch unit 21 selects a state in which the AC power supply E1 and the power supply device 1 are connected via the current limiting capacitor 22, and a state in which the AC power supply E1 and the power supply device 1 are connected by bypassing the current limiting capacitor 22.
  • the switch unit 21 includes power switches SW1 and SW1, a line 23, and a current limiting switch SW2.
  • the two power switches SW1 and SW1 are connected to the output lines R and T, respectively, and the connection / disconnection between the AC power supply E1 and the power supply 1 is selected. Note that the two power switches SW1 and SW1 are connected to any two output lines R, S, and T, respectively.
  • the line 23 branches from the output line R, bypasses the power switch SW1, and joins the output line R again. Note that the line 23 is not limited to the output line R, and may be branched or merged from any output spring provided with the power switch SW1.
  • the current limiting capacitor 22 is connected on the line 23.
  • Current limiting switch SW2 is a line
  • the power supply device 1 includes a diode bridge 11, a reactor 12, a smoothing capacitor 13, a high potential line 15a, and a low potential line 15b.
  • the diode bridge 11 includes diodes D1 to D6.
  • Diode D1 and diode D2 force sword are connected, diode D3 anode and diode D4 force sword are connected, diode D5 anode and diode D6 force sword are connected, and AC is connected at each connection point.
  • the power swords of diodes Dl, D3, and D5 are connected to the high potential line 15a, and the anodes of the diodes D2, D4, and D6 are connected to the low potential line 15b.
  • the diode bridge 11 performs full-wave rectification on the AC voltage from the AC power supply E1, converts it to a DC voltage, and outputs the DC voltage between the high potential line 15a and the low potential line 15b.
  • the rear tuttle 12 is connected to the high potential line 15a and reduces the ripple of the DC voltage from the diode bridge 11.
  • the smoothing capacitor 13 is in the rear stage of the rear tuttle 12, and one end is connected to the high potential line 15a. The other end is connected to the low potential line 15b to smooth the DC voltage from the diode bridge 11.
  • the inverter 14 receives the DC voltage from the smoothing capacitor 13 via the high potential line 15a and the low potential line 15b, converts it to an arbitrary AC voltage, and supplies it to the motor Ml.
  • the motor Ml is a compressor driving motor that drives a compressor used in the air conditioner according to the alternating current supplied from the inverter 14.
  • the switch controller 3 controls ON / OFF of the power switches SW1 and SW1 and the current limiting switch SW2.
  • the switch control unit 3 turns on the current limiting switch SW2 before turning on the power by turning on the power switch SW1. Then, an alternating current flows between the output line R, the line 23, the current limiting switch SW2, and the current limiting capacitor 22 and the output line S, and the alternating current flows into the direct current via the diode bridge 11. Converted. Then, the direct current flows to the reactor 12 and the smoothing capacitor 13, and the smoothing capacitor 13 is charged.
  • FIG. 2 is a diagram illustrating an example of the charging voltage of the smoothing capacitor.
  • Fig. 2 (a) is a diagram showing the charging voltage of the smoothing capacitor 13
  • Fig. 2 (b) is a diagram showing the current flowing through the current limiting capacitor 22
  • Fig. 2 (c) is a diagram showing that the switch control unit 3
  • FIG. 6 is a diagram showing a switch signal output to a current limiting switch SW2. Note that FIG. 2 shows the values when the current-limiting capacitor 22 has a capacitance of 10 F, the rear tuttle 12 has an inductance of 1.7 mH, and the smoothing capacitor 13 has a capacitance of 1680 ⁇ F.
  • FIG. 3 shows a charging voltage of the smoothing capacitor 13 when a current limiting resistor is used instead of the current limiting capacitor 22.
  • Fig. 3 (a) shows the voltage across the smoothing capacitor 13
  • Fig. 3 (b) shows the current flowing through the current limiting resistor
  • Fig. 3 (c) shows the switch to the current limiting switch SW2. It is a figure which shows a signal.
  • Fig. 3 shows the direct current when the current limiting resistance is 180 ⁇ , the inductance of the reactor 12 is 1.7 mH, and the capacitance of the smoothing capacitor 13 is 16 80 ⁇ F.
  • the charging device of the present invention is not limited to the force described as the charging device 2 of the power supply device 1 for the inverter 14 that supplies an alternating current to the compressor driving motor Ml used in the air conditioner.
  • the power supply device 1 is provided with a large-capacity smoothing capacitor 13. Therefore, this place In this case, the effect of reducing power consumption by the present invention is great.
  • the AC power supply E1 may be a three-phase AC power supply having a neutral point P1.
  • Figure 4 shows a motor drive device that uses a charging device for the power supply in this case.
  • symbol shows the same or an equivalent part, and the overlapping description is abbreviate
  • the smoothing capacitor 13 is composed of smoothing capacitors 13 a and 13 b connected in series on the output side of the diode bridge 11.
  • the current limiting capacitor 22 is connected between the neutral point P1 and the connection point P2 of the smoothing capacitors 13a and 13b on the side opposite to the diode bridge 11! /.
  • the current limiting switch SW2 is connected in series with the current limiting capacitor 22 between the neutral point P1 and the connection point P2.
  • the switch control unit 3 turns on the current limiting switch SW2 prior to turning on the power by turning on the power switch SW1. Then, current flows through the closed circuit consisting of AC power supply El, output line S, diodes 3 and D4, smoothing capacitors 13a and 13b, current limiting capacitor 22 and current limiting switch SW2, and the smoothing capacitors 13a and 13b are charged with voltage. The Even in this case, since power is charged through the current limiting capacitor 22, power S can be reduced to reduce power consumption.
  • the AC power supply E1 may be a single-phase AC power supply as shown in FIGS.
  • the diode bridge 11 is composed of four diodes D1 to D4.
  • the power switch SW1 is connected to one of the output lines of the AC power supply E1.
  • the other configuration is the same as that of the motor driving device shown in FIG.
  • the smoothing capacitors 13a and 13b are on the output side of the diode bridge 11, and are connected in series between the high potential line 15a and the low potential line 15b. It has been.
  • the smoothing capacitors 13a and 13b connected in series are connected in parallel with the smoothing capacitor 13.
  • the power factor improving switch SW3 is connected between the connection point P2 of the smoothing capacitors 13a and 13b and the single-phase AC power supply El!
  • the power factor can be improved by controlling the power factor improving switch SW3 at a predetermined timing.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

L'invention concerne un chargeur pour charger un convertisseur de puissance avec une consommation de puissance réduite. Une alimentation électrique (1) comprend un pont de diode (11) pour redresser une tension en courant alternatif à partir d'une alimentation électrique en courant alternatif (E1) et un condensateur de lissage (13) pour lisser la tension en courant continu provenant du pont de diode (11). Un chargeur (2) comprend un condensateur de limitation de courant (2) connecté entre l'alimentation électrique en courant alternatif (E1) et l'alimentation électrique (1) et une section de commutation (21) pour sélectionner soit une connexion de l'alimentation électrique en courant alternatif (E1) au pont de diode (11) par l'intermédiaire du condensateur (22) de limitation de courant (22), soit une connexion de l'alimentation électrique en courant alternatif (E1) au pont de diode (11) par dérivation du condensateur de limitation de courant (22). Une section (3) de commande de commutation commande la section de commutation (21) et charge le condensateur de lissage (13) par l'intermédiaire du condensateur (22) de limitation de courant. Étant donné que le condensateur (22) de limitation de courant ne consomme pas de puissance à l'exception de la consommation de puissance parla résistance en courant continu équivalente, la consommation de puissance est inférieure à celle qui se produit lorsque le condensateur de lissage est chargé par l'intermédiaire de la résistance de limitation de courant.
PCT/JP2007/072773 2006-11-29 2007-11-26 Chargeur d'alimentation électrique et procédé de chargement d'alimentation électrique WO2008066000A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006321285A JP2008136316A (ja) 2006-11-29 2006-11-29 電源装置の充電装置及び電源装置の充電方法
JP2006-321285 2006-11-29

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WO2008066000A1 true WO2008066000A1 (fr) 2008-06-05

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WO (1) WO2008066000A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967300A (zh) * 2015-05-27 2015-10-07 阳光电源股份有限公司 一种预充电电路和光伏逆变器
WO2021098201A1 (fr) * 2019-11-22 2021-05-27 华为技术有限公司 Circuit de précharge, onduleur et système de génération d'énergie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11677310B2 (en) 2018-09-12 2023-06-13 Mitsubishi Electric Corporation Power converting apparatus and air conditioner

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH07289766A (ja) * 1994-04-28 1995-11-07 Matsushita Electric Ind Co Ltd 工業用ミシン駆動装置
JPH0819265A (ja) * 1994-06-28 1996-01-19 Toshiba Corp 空気調和機のインバータ
JPH11235030A (ja) * 1998-02-19 1999-08-27 Sharp Corp スイッチング電源装置
JP2005130650A (ja) * 2003-10-24 2005-05-19 Shinko Electric Co Ltd 電源装置およびそれを備えた風力発電装置

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
JPH0186725U (fr) * 1987-11-30 1989-06-08

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07289766A (ja) * 1994-04-28 1995-11-07 Matsushita Electric Ind Co Ltd 工業用ミシン駆動装置
JPH0819265A (ja) * 1994-06-28 1996-01-19 Toshiba Corp 空気調和機のインバータ
JPH11235030A (ja) * 1998-02-19 1999-08-27 Sharp Corp スイッチング電源装置
JP2005130650A (ja) * 2003-10-24 2005-05-19 Shinko Electric Co Ltd 電源装置およびそれを備えた風力発電装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104967300A (zh) * 2015-05-27 2015-10-07 阳光电源股份有限公司 一种预充电电路和光伏逆变器
EP3098953A3 (fr) * 2015-05-27 2016-12-14 Sungrow Power Supply Co., Ltd. Circuit de précharge et onduleur photovoltaïque
US9912252B2 (en) 2015-05-27 2018-03-06 Sungrow Power Supply Co., Ltd. Pre-charge circuit and photovoltaic inverter
CN104967300B (zh) * 2015-05-27 2018-04-10 阳光电源股份有限公司 一种预充电电路和光伏逆变器
WO2021098201A1 (fr) * 2019-11-22 2021-05-27 华为技术有限公司 Circuit de précharge, onduleur et système de génération d'énergie
US11722001B2 (en) 2019-11-22 2023-08-08 Huawei Digital Power Technologies Co., Ltd. Pre-charging circuit, inverter, and power generation system

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