WO2017159486A1 - Dispositif d'amélioration de facteur de puissance, et dispositif de stockage d'énergie le comportant - Google Patents

Dispositif d'amélioration de facteur de puissance, et dispositif de stockage d'énergie le comportant Download PDF

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Publication number
WO2017159486A1
WO2017159486A1 PCT/JP2017/009195 JP2017009195W WO2017159486A1 WO 2017159486 A1 WO2017159486 A1 WO 2017159486A1 JP 2017009195 W JP2017009195 W JP 2017009195W WO 2017159486 A1 WO2017159486 A1 WO 2017159486A1
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WIPO (PCT)
Prior art keywords
power
power factor
load
current
storage battery
Prior art date
Application number
PCT/JP2017/009195
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English (en)
Japanese (ja)
Inventor
直晃 萩野
内田　丈
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日立マクセル株式会社
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Publication of WO2017159486A1 publication Critical patent/WO2017159486A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/01—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • 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
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present invention relates to a power factor correction device and a power storage device including the same.
  • Japanese Unexamined Patent Application Publication No. 2012-120428 discloses a power distribution management system that controls reactive power in a power distribution system having a renewable power generation facility.
  • An object of the present invention is to provide a power factor correction device that improves the power factor of a system and a power storage device including the same.
  • a power factor improving apparatus is connected between a system and a storage battery, converts AC power into DC power, and converts DC power into AC power, the system and the power converter.
  • a current detection unit for detecting an alternating current between a voltage detection unit for detecting an AC voltage between the system and the power conversion unit, and controlling the power conversion unit, the detected AC current and the
  • the storage battery is charged with AC power corresponding to the power consumption of the AC load connected to the grid, and at least one of the AC power is discharged from the storage battery so that the power factor based on the AC voltage becomes a predetermined value.
  • a power factor improvement control unit is connected between a system and a storage battery, converts AC power into DC power, and converts DC power into AC power, the system and the power converter.
  • the power factor correction control unit may charge the storage battery by inputting an AC current corresponding to a consumption current of the AC load in the power conversion unit.
  • the power factor of the system can be set to a predetermined value by inputting an alternating current corresponding to the consumed current of the alternating load to the storage battery.
  • the power conversion unit is connected to the AC load, and the power factor improvement control unit discharges the storage battery and responds to the consumption current of the AC load from the power conversion unit.
  • the AC current may be output to the AC load.
  • the AC power corresponding to the current consumption of the AC load is discharged from the storage battery and supplied to the AC load, so that the power of the system is not consumed by the AC load, and the power factor of the power consumption of the AC load is reduced.
  • the decrease can be suppressed.
  • the power conversion unit is connected to the AC load, converts DC power generated by the power generation device into AC power, and supplies the AC power to the system.
  • the unit may discharge the storage battery and output an AC current corresponding to a consumption current of the AC load from the power conversion unit to the AC load.
  • the power conversion unit is connected to the AC load and supplies AC power discharged from the storage battery to the system.
  • the power factor improvement control unit further includes the storage battery. It is good also as discharging alternating current and outputting the alternating current according to the consumption current of the said alternating current load from the said power converter to the said alternating current load.
  • the power factor correction control unit inputs an AC current corresponding to power consumption of the AC load to the power conversion unit to charge the storage battery, and discharges the storage battery.
  • An alternating current corresponding to the consumption current of the alternating load may be output from the power conversion unit to the system, and the charge amount and the discharge amount of the storage battery may be equal.
  • the accumulator is charged with an alternating current corresponding to the power consumption of the ac load and discharged from the accumulator so that the power factor in the system becomes a predetermined value, and the charge amount and the discharge amount of the accumulator are equal. It has become. Therefore, when the storage battery is in the standby mode in which neither charging nor discharging is performed, it is possible to improve the power factor reduction caused by the power consumption of the AC load while maintaining the apparent standby mode.
  • the power storage device includes any one of the power factor correction devices and the storage battery described above.
  • the power factor of the system can be improved.
  • FIG. 1 is a schematic diagram illustrating a connection example of the power factor correction apparatus according to the first embodiment.
  • FIG. 2 is a block diagram illustrating a schematic configuration of the power conversion unit and the power factor improvement unit of the power factor correction apparatus illustrated in FIG. 1.
  • FIG. 3 is a diagram illustrating an operation flow of the power factor correction apparatus according to the first embodiment.
  • FIG. 4A is a diagram illustrating the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system after the power factor is improved.
  • FIG.4 (b) is the figure which illustrated the electric current waveform which charges a storage battery for power factor improvement in Fig.4 (a).
  • FIG. 5A is a diagram illustrating the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system after the power factor is improved.
  • FIG.5 (b) is the figure which illustrated the electric current waveform which discharges a storage battery for power factor improvement in Fig.5 (a).
  • FIG. 6A is a diagram illustrating the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system before and after power factor improvement at the time of selling solar cell power.
  • FIG.6 (b) is the figure which illustrated the electric current waveform which discharges a storage battery for power factor improvement in Fig.6 (a).
  • FIG. 7A illustrates the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system before and after power factor improvement when the power of the storage battery is supplied to the system.
  • FIG. FIG.7 (b) is the figure which illustrated the electric current waveform which discharges a storage battery for power factor improvement in Fig.7 (a).
  • FIG. 8 is an operation flowchart of the power factor correction apparatus according to the second embodiment.
  • FIG. 9A is a diagram illustrating the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system after power factor improvement when the storage battery is in the standby mode.
  • FIG.9 (b) is the figure which illustrated the electric current waveform at the time of charging / discharging a storage battery for power factor improvement in Fig.9 (a).
  • FIG. 10A is a diagram illustrating the voltage waveform of the system, the consumption current waveform of the AC load, and the current waveform of the system before power factor improvement in Modification Example (1).
  • FIG.10 (b) is the figure which illustrated the waveform of the input electric current which charges a storage battery for power factor improvement in Fig.10 (a).
  • FIG. 11 is a schematic configuration diagram illustrating a connection example of the power storage device in the modification (2).
  • FIG. 12A is a diagram illustrating the voltage waveform of the system and the current waveform before power factor improvement and the consumption current waveform of the AC load in Modification Example (2).
  • FIG.12 (b) is the figure which illustrated the electric current waveform which discharges a storage battery for power factor improvement in Fig.12 (a).
  • FIG. 1 is a schematic diagram showing a connection example of the power factor correction apparatus according to the first embodiment of the present invention.
  • a power factor correction apparatus 11 is provided in an energy management system 10 such as a HEMS (Home Energy Management System) provided in a house.
  • HEMS Home Energy Management System
  • the energy management system 10 is connected to the wiring L connected to the grid 20 via the distribution board 12.
  • the power factor improving device 11 and the AC load 13 are connected to the wiring L via the distribution board 12, and the solar cell 14 and the storage battery 15 are connected to the power factor improving device 11, respectively.
  • the AC load 13 is an electrical device that operates by supplying AC power, such as an OA device such as a personal computer or a server installed in a home, a television, a refrigerator, or a lighting.
  • an OA device such as a personal computer or a server installed in a home, a television, a refrigerator, or a lighting.
  • the solar cell 14 includes a solar cell module in which a plurality of cells are connected in series or in parallel, and converts sunlight into DC power by the photovoltaic effect.
  • the storage battery 15 is a rechargeable secondary battery, for example, a lithium ion battery.
  • the storage battery 15 has a charge mode for storing DC power, a discharge mode for discharging DC power, and a standby mode in which neither power storage nor discharge is performed. It operates in the operation mode.
  • the power factor improvement apparatus 11 includes a power conversion unit 11A and a power factor improvement unit 11B.
  • the power factor improving unit 11B controls the power conversion unit 11A so as to charge or discharge the storage battery 15 so that the power factor in the wiring L connecting the system 20 and the distribution board 12 becomes a predetermined value.
  • FIG. 2 is a block diagram showing a schematic configuration of the power conversion unit 11A and the power factor improvement unit 11B of the power factor correction apparatus 11.
  • the power conversion unit 11 ⁇ / b> A includes an AC / DC converter 111 and a DC / DC converter 112.
  • the AC / DC converter 111 converts the AC power from the system 20 into DC power and outputs it to the DC / DC converter 112 under the control of the power factor improving unit 11B, or the DC power from the DC / DC converter 112 is converted. It is converted into AC power and output to the AC load 13 or the system 20.
  • the DC / DC converter 112 converts the DC power output from the AC / DC converter 111 or the DC power generated by the solar battery 14 into a voltage corresponding to the voltage of the storage battery 15 and outputs the voltage to the storage battery 15. Further, the DC / DC converter 112 converts the DC power generated by the solar battery 14 and the DC power discharged from the storage battery 15 into a predetermined voltage and outputs the voltage to the AC / DC converter 111.
  • the power factor improvement unit 11B includes a voltage detection unit 113, a current detection unit 114, and a power factor improvement control unit 115.
  • the voltage detection unit 113 detects the AC voltage in the wiring L, that is, the AC voltage in the system 20, and outputs the detection result to the power factor correction control unit 115.
  • the current detection unit 114 detects the AC current in the wiring L, that is, the AC current in the system 20, and outputs the detection result to the power factor correction control unit 115.
  • the power factor improvement control unit 115 is composed of, for example, a microcomputer.
  • the power factor correction control unit 115 calculates the power factor based on the detected effective value of the alternating current (current effective value) and the detected effective value of the alternating voltage (voltage effective value). Then, the power factor improvement control unit 115 controls the power conversion unit 11A to charge or discharge the storage battery 15 so that the power factor becomes a predetermined value according to the power flow (buying or selling power).
  • Whether the AC load 13 consumes power from the system 20 (power purchase) or whether power is supplied to the system 20 (power sale) is based on the sign of the current value detected by the current detection unit 114. You may make it judge. That is, for example, when the current detection unit 114 is installed so that a positive current value is detected when power is supplied from the grid 20, if the sign of the detected current value is positive, the purchase is made. If it is negative, it is determined that the power is sold.
  • FIG. 3 is a diagram illustrating an operation flow of the power factor correction apparatus 11 according to the present embodiment. In the following description, it is assumed that the storage battery 15 operates in the charge mode or the discharge mode, and the AC load 13 consumes power.
  • the power factor correction apparatus 11 calculates the power factor of the system 20 by using the AC voltage and the AC current detected by the voltage detection unit 113 and the current detection unit 114 in the power factor correction control unit 115, respectively (step S11). . Then, in the case of a power purchase state in which power is not flowing backward to the grid 20 (step S12: No), the power factor improvement control unit 115 is in the charge mode (step S13: Yes). Then, an AC current corresponding to the consumption current of the AC load 13 is input to the AC / DC converter 111 so that the power factor becomes a predetermined value (for example, 1.0), and the storage battery 15 is charged (step S15).
  • a predetermined value for example, 1.0
  • FIG. 4A shows that the voltage waveform W1 in the system 20 when the AC load 13 is consuming power (power purchase), the current consumption waveform W2 of the AC load 13, and the power factor of the system 20 are predetermined values ( It is the figure which illustrated current waveform W3 in system 20 in the case of 1.0).
  • the power factor correction control unit 115 charges the storage battery 15 by controlling the input current in the AC / DC converter 111 so that the current in the system 20 becomes the current waveform W3. That is, the current indicated by the current waveform W4 in FIG. 4B is AC / AC so that the current waveform obtained by combining the consumption current of the AC load 13 and the AC current input to the AC / DC converter 111 becomes the current waveform W3. Input in the DC converter 111 to charge the storage battery 15. Thereby, the current waveform in the system 20 becomes a current waveform W3 in which the distortion of the consumption current waveform W2 is compensated, and the power factor is improved.
  • step S13 when the operation mode of the storage battery 15 is the discharge mode in step S13 (step S13: No), the power factor improvement control unit 115 sets the AC load 13 so that the power factor becomes a predetermined value (for example, 0). The storage battery 15 is discharged so that an alternating current corresponding to the consumed current is output from the AC / DC converter 111 (step S15).
  • a predetermined value for example, 0
  • FIG. 5A shows a voltage waveform W1 in the system 20 at the time of power purchase, a consumption current waveform W2 of the AC load 13, and a current waveform W6 of the system 20 after power factor improvement, as in FIG. 4A.
  • FIG. When the AC load 13 consumes the power of the system 20, reactive power is generated and the power factor of the system 20 is reduced.
  • the storage battery 15 When the storage battery 15 is in the discharge mode, the storage battery 15 is discharged to supplement the power consumption of the AC load 13 with the power of the storage battery 15, and the current waveform W5 of FIG. / Supplied from the DC converter 111 to the AC load 13.
  • the AC load 13 consumes the electric power discharged from the storage battery 15, the current in the system 20 becomes 0 as shown by the current waveform W6 in FIG. 5A, and the power factor becomes 0.
  • the current flowing from the system 20 into the home is 0, a reduction in the power factor of the system 20 due to the AC load 13 consuming the power from the system 20 is suppressed.
  • step S12 when the power is flowing backward in step S12 (step S12: Yes), when the power is generated by the solar cell 14 (step S16: Yes), the power factor correction control unit 115 A current corresponding to the power consumption of the AC load 13 is discharged from the storage battery 15 so that the voltage and current in the system 20 are in opposite phases, that is, the absolute value of the power factor is 1.0, and the AC load 13 (step S17).
  • FIG. 6A shows the voltage waveform W11 of the grid 20, the consumption current waveform W12 of the AC load 13, the current waveform W13 of the grid 20 before power factor improvement, and after power factor improvement during the sale of power of the solar cell 14. It is the figure which illustrated current waveform W14 of system 20 of.
  • the power conversion unit 11 ⁇ / b> A converts the DC power generated by the solar cell 14 into AC power and outputs it so as to have a predetermined power factor (for example, 1.0).
  • a predetermined power factor for example, 1.0.
  • the current waveform in the system 20 is the current waveform W14 in FIG.
  • the consumption current waveform W12 in FIG. 6A the current waveform of the system 20 becomes the current waveform W23 due to the reactive power generated when the AC load 13 consumes power, and the power factor is reduced.
  • the power factor correction control unit 115 discharges the storage battery 15 so that the current and voltage in the system 20 at the time of power sale are in opposite phases, and corresponds to the consumption current of the AC load 13 (b) in FIG.
  • Current waveform W15 is supplied from the AC / DC converter 111 to the AC load 13.
  • the AC load 13 consumes the electric power discharged from the storage battery 15, the current waveform of the system 20 becomes a current waveform W14 shown in FIG. 6A, and the power factor of the system 20 is improved to a predetermined value.
  • step S16 when the electric power discharged from the storage battery 15 is supplied to the system 20 in step S16 (step S16: No), the power factor correction control unit 115 causes the voltage and current in the system 20 to be in opposite phases. That is, the current obtained by adding the current consumption of the AC load 13 is discharged from the storage battery 15 and supplied to the system 20 and the AC load 13 so that the absolute value of the power factor becomes 1.0 (step S18).
  • FIG. 7A shows the voltage waveform W11 of the system 20, the current consumption waveform W12 of the AC load 13 and the current waveform W23 of the system 20 before power factor improvement when the power of the storage battery 15 is supplied to the system 20.
  • FIG. 5 is a diagram illustrating a current waveform W24 of the system 20 after power factor improvement.
  • the power conversion unit 11A converts the DC power of the storage battery 15 into AC power and outputs it so as to have a predetermined power factor (for example, 1.0).
  • a predetermined power factor for example, 1.0
  • the current waveform in the system 20 is the current waveform W24 in FIG.
  • the consumption current waveform W12 in FIG. 7A the current waveform of the system 20 becomes the current waveform W23 due to the reactive power generated by the power consumption of the AC load 13, and the power factor decreases.
  • the power factor correction control unit 115 discharges from the storage battery 15 power corresponding to the power consumed by the AC load 13 in addition to the power supplied to the system 20 so that the current and voltage in the system 20 are in opposite phases. Then, the power consumption of the AC load 13 is supplemented. Accordingly, the AC / DC converter 111 outputs the current waveform W25 in FIG. 7B, which is a combination of the current output to the system 20 and the current corresponding to the consumption current waveform W12. As a result, the AC load 13 consumes AC power supplied from the storage battery 15, and the current waveform of the system 20 becomes a current waveform W24 shown in FIG. 7A, so that the power factor of the system 20 is improved.
  • FIG. 8 is an operation flowchart of the power factor correction apparatus 11 in the present embodiment.
  • the power factor correction apparatus 11 calculates the power factor based on the AC voltage and AC current in the system 20 in the power factor correction control unit 115 (step S11).
  • the power factor improvement control part 115 charges / discharges the electric power according to the power consumption of the alternating current load 13 so that the calculated power factor may become a predetermined value (step S20).
  • the voltage in the system 20 is the voltage waveform W31 shown in FIG. 9A, and the consumption current of the AC load 13 becomes the consumption current waveform W32 shown in FIG. 9A due to the reactive power generated by the power consumption of the AC load 13.
  • the power factor correction control unit 115 charges and discharges the storage battery 15 so that the current waveform in the system 20 becomes the current waveform W33 shown in FIG.
  • the power factor correction control unit 115 is configured so that the current waveform W34 shown in FIG. 9B is input to and output from the AC / DC converter 111 in accordance with the current consumption waveform W32 of the AC load 13.
  • the battery is charged and discharged.
  • the charge amount and discharge amount during charging / discharging are equivalent.
  • the charge amount is a value obtained by integrating the alternating current input from the AC / DC converter 111 to the storage battery 15 with the charging time
  • the discharge amount is the alternating current output from the storage battery 15 to the AC / DC converter 111 with the discharge time. The integrated value.
  • the remaining amount of the storage battery 15 after charging / discharging is substantially the same as before the start of charging / discharging, and apparently the standby mode is maintained. Further, the current in the system 20 becomes a current waveform W33 shown in FIG. 9A, and the power factor of the system 20 is improved to a predetermined value.
  • step S16 of FIG. 3 the power generated by the solar cell 14 is being sold (step S16: Yes), and the storage battery is set so that the power factor of the system 20 becomes a predetermined value.
  • FIG. 10 (a) the example (FIG. 6 (a) (b)) which discharges 15 was demonstrated, you may charge the storage battery 15 at this time.
  • the current waveform W15 ′ shown in FIG. 10 (b) corresponding to the consumption current waveform W12 is changed to AC in order to compensate for the distortion of the consumption current waveform W12 of the AC load 13.
  • Input into DC converter 111 to charge storage battery 15.
  • the current waveform of the system 20 becomes a current waveform W14 '.
  • the power storage device 30 including the power factor improving device 110 and the storage battery 15 It may be installed outside the house.
  • the term “outside the house” refers to the outside (system side) of a charge meter provided for each consumer.
  • the ampere breaker of the electric power company is installed in the distribution board 12, the outside (system side) from the ampere breaker is outside the house.
  • the power factor correction apparatus 110 includes a power conversion unit 11A and a power factor improvement unit 110B similar to those in the first embodiment.
  • the power factor improvement unit 110B detects an AC voltage and an AC current in the system 20, and calculates a power factor in the system 20 based on the detected AC voltage and AC current.
  • the power factor improving unit 110B is configured so that the power factor of the system 20 becomes a predetermined value as in FIGS. 4A and 4B of the first embodiment described above.
  • a current waveform W4 (FIG. 4B) corresponding to the consumption current of the AC load 13 is input to the AC / DC converter 111 to charge the storage battery 15.
  • the power generated by the power generation device may be supplied to the system 20.
  • the power factor improvement unit 110B determines the AC current value to be detected. If the sign is negative, it is determined that the power is being sold.
  • FIG. 12A shows a voltage waveform W11 in the system 20 when the AC load 13 is consuming power during power sale, a consumption current waveform W12 of the AC load 13, and a current waveform in the system 20 before power factor improvement.
  • the current waveform W42 and a current waveform W44 in the system 20 whose power factor is a predetermined value (for example, 1.0) are shown.
  • the current waveform W42 of the system 20 is distorted due to power consumption by the AC load 13 at the time of selling power, and does not have an opposite phase to the voltage waveform W11.
  • the power factor correction apparatus 110 outputs the current waveform W43 shown in FIG. 12B corresponding to the consumption current waveform W12 from the AC / DC converter 111 so as to compensate for the consumption current of the AC load 13.
  • the storage battery 15 is discharged. Thereby, the current waveform of the system 20 becomes a current waveform W44 shown in FIG. 12A, and the power factor of the system 20 is improved to a predetermined value.
  • the power factor improving apparatus of the above-described embodiment has been described as improving the power factor reduction due to the distortion of the AC current waveform in the system, but even when applied to the improvement of the power factor reduction due to the phase shift of the AC current. Good.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
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Abstract

La présente invention a pour but de proposer un dispositif d'amélioration de facteur de puissance pour améliorer le facteur de puissance d'un système. Un dispositif de commande d'amélioration de facteur de puissance (11) comporte : un convertisseur d'énergie (11A) connecté entre un système (20) et une batterie de stockage (15); un détecteur de courant (114); un détecteur de tension (113); et un dispositif de commande d'amélioration de facteur de puissance (115). Le détecteur de courant (114) détecte un courant alternatif entre le système (20) et le convertisseur d'énergie (11A), et le détecteur de tension (113) détecte une tension alternative entre le système (20) et le convertisseur d'énergie (11A). Le dispositif de commande d'amélioration de facteur de puissance (115) réalise au moins l'une d'une charge de la batterie de stockage (15) avec une puissance de courant alternatif qui correspond à la consommation d'énergie d'une charge de courant alternatif (13) connectée au système (20) et d'une décharge d'une telle puissance de courant alternatif provenant de la batterie de stockage (15).
PCT/JP2017/009195 2016-03-14 2017-03-08 Dispositif d'amélioration de facteur de puissance, et dispositif de stockage d'énergie le comportant WO2017159486A1 (fr)

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JP2016-049216 2016-03-14
JP2016049216A JP2017169253A (ja) 2016-03-14 2016-03-14 力率改善装置、及びそれを備えた蓄電装置

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