WO2014083788A1 - Convertisseur bidirectionnel - Google Patents

Convertisseur bidirectionnel Download PDF

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Publication number
WO2014083788A1
WO2014083788A1 PCT/JP2013/006664 JP2013006664W WO2014083788A1 WO 2014083788 A1 WO2014083788 A1 WO 2014083788A1 JP 2013006664 W JP2013006664 W JP 2013006664W WO 2014083788 A1 WO2014083788 A1 WO 2014083788A1
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WO
WIPO (PCT)
Prior art keywords
power
control
unit
efficiency
power supply
Prior art date
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PCT/JP2013/006664
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English (en)
Japanese (ja)
Inventor
仁 吉澤
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パナソニック株式会社
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Publication of WO2014083788A1 publication Critical patent/WO2014083788A1/fr

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    • 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
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/52—Drive Train control parameters related to converters
    • B60L2240/526—Operating parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/52—Drive Train control parameters related to converters
    • B60L2240/527—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/52—Drive Train control parameters related to converters
    • B60L2240/529—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Definitions

  • the present invention relates to a bidirectional converter that is used by being inserted in a circuit between different power systems.
  • the power conversion device described in Literature 1 is a device that controls charging and discharging of a battery (storage battery) of an electric vehicle.
  • the power conversion device described in Literature 1 includes a first power supply circuit and a second power supply circuit that generate an operating voltage of the control circuit.
  • the first power supply circuit generates an operating voltage for the control circuit from the AC voltage supplied from the power system.
  • the second power supply circuit generates an operating voltage for the control circuit from a DC voltage supplied from a DC power supply of the electric vehicle.
  • the power conversion device described in Document 1 selects the first power supply circuit as the power supply for supplying the operating voltage to the control circuit when power is supplied from the power system, and the power supply from the power system is performed.
  • the second power supply circuit is selected in the case of interruption.
  • the conventional power conversion device described in Document 1 does not consider the efficiency of power used in power conversion when selecting a power supply circuit that supplies an operation voltage to the control circuit. There was a case where a bad power supply circuit was selected.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a bidirectional converter capable of improving the efficiency of power used during power conversion.
  • the bidirectional converter according to the present invention is a bidirectional converter that is used by being inserted into an electric circuit between a first power system and a second power system, and the first power system and the second power system.
  • a power conversion unit that bi-directionally converts power a control unit that controls the power conversion unit, and each of which receives power from the first power system or the second power system and performs the control Among the first control power source and the second control power source provided so as to be able to supply the drive power of the unit to the control unit, and the first control power source and the second control power source, the efficiency of the power used is high
  • a selection unit that selects the control power source as a power source that supplies the driving power to the control unit.
  • a first measurement unit that measures a first voltage on the first power system side
  • a second measurement unit that measures a second voltage on the second power system side
  • An acquisition unit that acquires scheduled power to be converted between the first power system and the second power system, the first voltage measured by the first measurement unit, and the second measurement
  • the first control power source is used as a power source for supplying the driving power to the control unit in the combination of the second voltage measured by the unit and the scheduled power acquired by the acquisition unit
  • a calculation unit that obtains efficiency and efficiency when the second control power source is used as the power source
  • the selection unit includes the first control power source and the second control power source among the first control power source and the second control power source.
  • the efficiency calculated by the calculation unit is The control power of illegal, it is preferable to select as the power source for supplying the driving power to the control unit.
  • a power supply provided separately from the first power system and the second power system and supplying power to at least one of the first control power supply and the second control power supply at startup
  • Preferably further means are provided.
  • the first table in which the first voltage and the efficiency of the first control power supply are associated with each other, and the second voltage and the efficiency of the second control power supply correspond to each other.
  • a first control unit corresponding to the first voltage measured by the first measurement unit using the first table stored in the storage unit.
  • the first determination unit that determines the efficiency of the power supply and the second table stored in the storage unit, and the second voltage corresponding to the second voltage measured by the second measurement unit.
  • a second determining unit for determining the efficiency of the second control power supply Using the third table stored in the storage unit, the first voltage measured by the first measurement unit, the second voltage measured by the second measurement unit, and A third determination unit that determines the efficiency of the power conversion unit corresponding to the combination of the planned power acquired by the acquisition unit, and the efficiency of the first control power source determined by the first determination unit.
  • the scheduled power obtained by the first power system is A1
  • the efficiency of the first control power supply is ⁇ 1
  • the efficiency of the second control power supply is ⁇ 2
  • the efficiency of the power conversion unit is ⁇ 3
  • the drive power is supplied to the control unit.
  • the efficiency when the first control power source is used as the power source to be supplied is A1 / [(A1 / ⁇ 3) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 1) ⁇ ]
  • the driving power is supplied to the control unit.
  • the efficiency when the second control power supply is used as the power supply is preferably A1 / ⁇ (A1 / ⁇ 3) + (B1 / ⁇ 2) ⁇ .
  • the planned power obtained by the second power system is A2.
  • the drive power is B1
  • the efficiency of the first control power supply is ⁇ 1
  • the efficiency of the second control power supply is ⁇ 2
  • the efficiency of the power conversion unit is ⁇ 3, the drive power is supplied to the control unit.
  • the efficiency when the first control power source is used as the power source to be supplied is A2 / ⁇ (A2 / ⁇ 3) + (B1 / ⁇ 1) ⁇
  • the first power source for supplying the driving power to the control unit is the second power source.
  • the efficiency when the control power source 2 is used is preferably A2 / [(A2 / ⁇ 3) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 2) ⁇ ].
  • the first power system includes a storage battery
  • the second power system includes a power system
  • direct current is converted into alternating current in the direction from the first power system side to the second power system side, and from the second power system side to the first power system side.
  • a DC / AC converter that converts alternating current into direct current with respect to the direction is preferable.
  • a control power supply that supplies drive power to the control unit can be selected according to the use situation, so that the efficiency of power used during power conversion can be improved.
  • FIG. 3 is a flowchart illustrating an operation of the power conditioner according to the first embodiment. It is a block diagram which shows the structure of the power conditioner which concerns on Embodiment 2.
  • FIG. 3 is a flowchart illustrating an operation of the power conditioner according to the first embodiment. It is a block diagram which shows the structure of the power conditioner which concerns on Embodiment 2.
  • the bidirectional converter includes a first control power source and a second control power source provided so as to be able to supply drive power (operating power) of the control unit to the control unit.
  • Each of the first control power supply and the second control power supply receives power supply from the first power system or the second power system and supplies drive power to the control unit. Then, the bidirectional converter selects a control power source having higher efficiency of power used by the bidirectional converter as a power source for supplying driving power to the control unit, out of the first control power source and the second control power source.
  • the control power supply that supplies the driving power to the control unit can be selected according to the use situation, so that the efficiency of the bidirectional converter at the time of power conversion can be improved.
  • the power conditioner 1 As shown in FIG. 1, the power conditioner 1 according to Embodiment 1 is a charge / discharge bidirectional converter that controls the storage and discharge of a storage battery (first power system) 2.
  • the power conditioner 1 of the present embodiment is used by being inserted into an electric circuit between the storage battery 2 and the system side system (second electric power system) 3 in a consumer to which electric power is supplied from, for example, an electric power company.
  • a consumer there are a detached house, each dwelling unit of a housing complex, a factory, an office, etc., for example.
  • a solid line indicates an electric circuit
  • a broken line indicates a signal line other than the electric circuit.
  • V2H Vehicle to Home
  • the V2H system not only charges a large-capacity storage battery mounted on an electric vehicle from a home power system, but also uses (discharges) the power stored in the storage battery in conjunction with the home power system. It is.
  • the power conditioner 1 is a charge for electric vehicles that mutually converts DC power (DC voltage, DC current) of the storage battery 2 and AC power (AC voltage, AC current) of the system side system 3 during charging and discharging. It is a discharger.
  • DC power DC voltage, DC current
  • AC power AC voltage, AC current
  • the power conditioner 1 converts AC power from the system side system 3 into DC power, and outputs the DC power to the storage battery 2.
  • the power conditioner 1 converts the DC power of the storage battery 2 into AC power and outputs the AC power to the system side system 3.
  • the storage battery 2 is a large-capacity storage battery for an electric vehicle such as a nickel metal hydride battery or a lithium ion battery, and is mounted on the electric vehicle.
  • the storage battery 2 is connected to the power conditioner 1 and is charged with electric power supplied from the system side system 3 via the power conditioner 1. Further, when it is desired to operate a load device (not shown) connected to the system side system 3 at the time of a power failure, the storage battery 2 is discharged to the system side system 3 through the power conditioner 1.
  • the system side system 3 is a system connected to the power system 31.
  • the grid-side system 3 includes a distribution board connected to the power grid 31, and supplies power to the load device.
  • the distribution board is connected to the power conditioner 1 by a second electric circuit 52.
  • the load device is connected to the distribution board and operates when power is supplied from the power system 31 or the storage battery 2.
  • the power conditioner 1 of the present embodiment includes a first connection unit 11, a second connection unit 12, a disconnector 13, a power conversion unit 14, and a first control power source. 15, a second control power supply 16, and a control device 4.
  • the 1st connection part 11 is a terminal provided in order to connect the electric circuit 171 by the side of the power converter 14, and the 1st electric circuit 51 by the side of the storage battery 2.
  • the switch 21 is provided by being inserted into a first electric circuit 51 between the power conditioner 1 and the storage battery 2. Then, the switch 21 is closed so as to electrically connect the power conditioner 1 and the storage battery 2, or is opened so as to electrically disconnect the power conditioner 1 and the storage battery 2. The switch 21 is opened when charging / discharging of the storage battery 2 is not performed or when an abnormality occurs during charging / discharging of the storage battery 2, for example.
  • the second connection unit 12 is a terminal provided to connect the electric circuit 172 on the power conversion unit 14 side and the second electric circuit 52 on the system side system 3 side. That is, the system side system 3 is electrically connected to the second connection unit 12.
  • the disconnector 13 is provided by being inserted into an electric path 172 between the second connection unit 12 and the power conversion unit 14, and opens and closes under the control of the control unit 41 described later. That is, the circuit breaker 13 is closed so that the second connection unit 12 and the power conversion unit 14 are electrically connected, or the second connection unit 12 and the power conversion unit 14 are electrically connected. Or open to block.
  • the power conversion unit 14 bi-directionally converts power (voltage, current) between the storage battery 2 and the system side system 3.
  • the power conversion unit 14 includes a DC / AC inverter (DC / AC conversion unit) 141, a smoothing capacitor 142, and a DC / DC converter (DC / DC conversion unit) 143.
  • the power conversion unit 14 operates under the control of the control unit 41 described later.
  • the DC / AC inverter 141 is a bidirectional DC / AC inverter that converts between DC power (DC voltage, DC current) and AC power (AC voltage, AC current) under the control of the control unit 41.
  • the DC / AC inverter 141 operates by turning on / off a switching element (not shown).
  • This switching element is, for example, an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor: IGBT, hereinafter referred to as “IGBT”), and is switched on and off in accordance with a control signal from the control unit 41.
  • IGBT Insulated Gate Bipolar Transistor
  • the DC / AC inverter 141 converts AC power supplied from the system side system 3 through the second connection unit 12 and the disconnector 13 into DC power, and passes through the smoothing capacitor 142. The DC power is output to the DC / DC converter 143.
  • the DC / AC inverter 141 converts the DC power output from the DC / DC converter 143 into AC power and outputs the AC power to the system side system 3.
  • the smoothing capacitor 142 is provided between the DC / AC inverter 141 and the DC / DC converter 143.
  • the smoothing capacitor 142 smoothes the output voltage of the DC / AC inverter 141 when the storage battery 2 is charged, and smoothes the output voltage of the DC / DC converter 143 when the storage battery 2 is discharged.
  • the DC / DC converter 143 is a bidirectional DC / DC converter that converts the magnitude of DC power (DC voltage, DC current) under the control of the control unit 41.
  • the DC / DC converter 143 operates by turning on and off a switching element (not shown). This switching element is, for example, an IGBT or the like, and switches on / off according to a control signal from the control unit 41.
  • the DC / DC converter 143 is an insulated DC / DC converter using a transformer, for example.
  • the DC / DC converter 143 is not limited to an insulating type, and may be a non-insulating type.
  • the DC / DC converter 143 converts the DC power output from the DC / AC inverter 141 and outputs it to the storage battery 2 when the storage battery 2 is charged. On the other hand, when the storage battery 2 is discharged, the DC / DC converter 143 converts the DC power of the storage battery 2 and outputs it to the DC / AC inverter 141 via the smoothing capacitor 142.
  • the first control power supply 15 is a power supply circuit that supplies drive power for driving the control device 4 (including the control unit 41) to the control device 4.
  • the first control power supply 15 is connected to an electric circuit 171 between the first connection unit 11 and the power conversion unit 14. That is, the first control power supply 15 is provided so as to be able to receive drive power from the storage battery 2 and supply drive power to the control device 4.
  • the first control power supply 15 can also receive power supply from the system side system 3 via the power conversion unit 14 and supply drive power to the control device 4.
  • the second control power supply 16 is a power supply circuit that supplies drive power for driving the control device 4 (including the control unit 41) to the control device 4.
  • the second control power supply 16 is connected to an electric circuit 172 between the second connection unit 12 and the power conversion unit 14. That is, the second control power supply 16 is provided so as to receive power supply from the system side system 3 and supply drive power to the control device 4. Further, the second control power supply 16 can also receive drive power from the storage battery 2 via the power converter 14 and supply drive power to the control device 4.
  • the control device 4 includes a control unit 41, a first measurement unit 42, a second measurement unit 43, an acquisition unit 44, a calculation unit 45, a selection unit 46, and a storage unit 47.
  • the control device 4 includes, for example, a computer (including a microcomputer) on which a CPU (Central Processing Unit) and a memory are mounted as main components.
  • a computer including a microcomputer
  • CPU Central Processing Unit
  • the control unit 41 controls the power conversion unit 14. That is, the control unit 41 controls the circuit breaker 13, the DC / AC inverter 141, and the DC / DC converter 143. Thereby, the control unit 41 controls charging and discharging of the storage battery 2. At this time, the control unit 41 has a grid-connected operation function for coordinating AC power supplied from the second connection unit 12 to the grid-side system 3 with commercial power supplied by the power grid 31. Further, the control unit 41 detects whether the storage battery 2 is charged or discharged.
  • the control unit 41 has a CPU mounted on a computer as a main component, and operates according to a program.
  • the 1st measurement part 42 measures the both-ends voltage between the 1st connection part 11 and the power converter part 14 as the battery voltage (1st voltage) V1 by the side of the storage battery 2.
  • the second measuring unit 43 measures the voltage between both ends of the second connecting unit 12 and the power conversion unit 14 as a system voltage (second voltage) V2 on the power system 31 side.
  • the acquisition unit 44 acquires planned power (scheduled power information) for charging / discharging the storage battery 2.
  • the acquisition unit 44 acquires planned charging information (scheduled power information) indicating planned charging power (scheduled power).
  • the scheduled charging power is obtained, for example, by the product of the current flowing through the electric circuit 171 or the first electric circuit 51 and the battery voltage V1.
  • the acquisition unit 44 acquires scheduled discharge information (scheduled power information) indicating the scheduled discharge power (scheduled power).
  • the planned discharge power is obtained by, for example, the product of the current flowing in the electric circuit 172 or the second electric circuit 52 and the system voltage V2.
  • the means for obtaining the planned charging power and the planned discharging power may be in the power conditioner 1 or may be different from the power conditioner 1.
  • the acquisition unit 44 may acquire the planned power information from the storage battery 2 or a HEMS (You can also obtain it from Home (Energy Management (System)).
  • the planned charging power and the planned discharging power may be set in advance in the power conditioner 1 or outside the power conditioner 1 before the start of charging / discharging.
  • the calculation unit 45 controls the combination of the battery voltage V1 measured by the first measurement unit 42, the system voltage V2 measured by the second measurement unit 43, and the planned power acquired by the acquisition unit 44.
  • the efficiency when the first control power supply 15 is used as a power supply for supplying drive power to the device 4 and the efficiency when the second control power supply 16 is used as the power supply are obtained.
  • the calculation unit 45 includes a first determination unit 451, a second determination unit 452, a third determination unit 453, and a calculation unit 454.
  • the first determination unit 451 shown in FIG. 1 uses the first table 471 stored in the storage unit 47 and uses the first control power supply corresponding to the battery voltage V1 measured by the first measurement unit 42.
  • the efficiency ⁇ 1 of 15 is determined.
  • the efficiency ⁇ 1 of the first control power supply 15 varies depending on the battery voltage V1.
  • FIG. 3 shows the first table 471.
  • the battery voltage V1 and the efficiency ⁇ 1 of the first control power supply 15 are associated with each other. In the example of FIG. 3, the case where the battery voltage V1 is m is shown.
  • the second determination unit 452 illustrated in FIG. 1 uses the second table 472 stored in the storage unit 47 and uses the second control power supply corresponding to the system voltage V2 measured by the second measurement unit 43.
  • the efficiency ⁇ 2 of 16 is determined.
  • the efficiency ⁇ 2 of the second control power supply 16 varies depending on the system voltage V2.
  • FIG. 4 shows the second table 472.
  • the system voltage V2 and the efficiency ⁇ 2 of the second control power supply 16 are associated with each other.
  • the system voltage V2 is shown for n types.
  • the third determination unit 453 illustrated in FIG. 1 uses the third table 473 stored in the storage unit 47 and the battery voltage V ⁇ b> 1 measured by the first measurement unit 42 and the second measurement unit 43.
  • the efficiency ⁇ 3 of the power conversion unit 14 corresponding to the combination of the system voltage V2 measured in step 1 and the planned power acquired by the acquisition unit 44 is determined.
  • the efficiency ⁇ 3 of the power conversion unit 14 varies depending on the battery voltage V1, the system voltage V2, and the planned power.
  • FIG. 5 shows the third table 473.
  • the combination of the battery voltage V1, the system voltage V2, and the scheduled power is associated with the efficiency ⁇ 3 of the power conversion unit 14.
  • z cases are shown.
  • the planned power is four ways of 1000 [W], 2000 [W], 3000 [W], and 4000 [W]
  • z becomes (m ⁇ n ⁇ 4).
  • the calculation unit 454 shown in FIG. 1 includes the efficiency ⁇ 1 of the first control power supply 15 determined by the first determination unit 451, the efficiency ⁇ 2 of the second control power supply 16 determined by the second determination unit 452, and Then, the efficiency ⁇ 3 of the power conversion unit 14 determined by the third determination unit 453 is acquired. Furthermore, the calculation unit 454 acquires the scheduled power acquired by the acquisition unit 44 and the driving power. Then, the calculation unit 454 calculates the efficiency of the power conditioner 1 using the efficiency ⁇ 1, the efficiency ⁇ 2, the efficiency ⁇ 3, the scheduled power, and the drive power. That is, the calculation unit 454 uses the efficiency of the power conditioner 1 when the first control power supply 15 is used as a power supply for supplying driving power to the control device 4 and the second control power supply 16 as the power supply. The efficiency of the power conditioner 1 is calculated.
  • the efficiency of the power conditioner 1 is the ratio (A1 / A2) of the planned charging power A1 on the storage battery 2 side to the power A2 on the system side system 3 side when the storage battery 2 is charged.
  • the power A2 on the system side system 3 side is the power C1 necessary for charging the storage battery 2.
  • the power C1 is (A1 / ⁇ 3)
  • the power D1 is B1 / ( ⁇ 3 ⁇ ⁇ 1).
  • ⁇ 1 is the efficiency of the first control power supply 15, and ⁇ 3 is the efficiency of the power conversion unit 14.
  • the power A2 on the system side system 3 side includes the power C1 necessary for charging the storage battery 2 and the second control power.
  • This is the sum (C1 + D2) with the power D2 necessary for the power supply 16 to supply the driving power B1 to the control device 4. Therefore, the efficiency of the power conditioner 1 is A1 / (C1 + D2).
  • the power C1 is (A1 / ⁇ 3)
  • the power D2 is (B1 / ⁇ 2).
  • ⁇ 2 is the efficiency of the second control power supply 16
  • ⁇ 3 is the efficiency of the power conversion unit 14.
  • the efficiency of the power conditioner 1 is the ratio (A2 / A1) of the planned discharge power A2 on the system side system 3 side to the power A1 on the storage battery 2 side.
  • the power A ⁇ b> 1 on the storage battery 2 side is the power C ⁇ b> 1 necessary for discharging to the system side system 3 and the first control power supply 15. Is the sum (C1 + D1) with the power D1 required to supply the drive power B1 to the control device 4. Therefore, the efficiency of the power conditioner 1 is A2 / (C1 + D1). At this time, the power C1 is (A1 / ⁇ 3), and the power D1 is (B1 / ⁇ 1).
  • the second control power supply 16 is used as a power supply for supplying drive power to the control device 4, the power A1 on the storage battery 2 side is the power C1 necessary for discharging to the system side system 3 and the second control power. This is the sum (C1 + D2) with the power D2 necessary for the power supply 16 to supply the driving power B1 to the control device 4. Therefore, the efficiency of the power conditioner 1 is A2 / (C1 + D2). At this time, the power C1 is (A2 / ⁇ 3), and the power D2 is (B1 / ( ⁇ 3 ⁇ ⁇ 2)).
  • the efficiency of the power conditioner 1 is A1 / [(A1 / ⁇ 3) when the first control power supply 15 is used as a power supply for supplying drive power to the control device 4 in the case of charging. ) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 1)) ⁇ , and when the second control power supply 16 is used as the power supply, A1 / ⁇ (A1 / ⁇ 3) + (B1 / ⁇ 2) ⁇ .
  • the efficiency of the power conditioner 1 is A2 / ⁇ (A2 / ⁇ 3) + (B1 / ⁇ 1) ⁇ when the first control power supply 15 is used as a power supply for supplying drive power to the control device 4.
  • the second control power supply 16 is used as the power supply, A2 / [(A2 / ⁇ 3) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 2) ⁇ ].
  • the selection unit 46 illustrated in FIG. 1 selects the control power source having the higher power consumption efficiency among the first control power source 15 and the second control power source 16 as the power source for supplying drive power to the control device 4. .
  • the selection unit 46 of the present embodiment supplies drive power to the control device 4 of the first control power supply 15 and the second control power supply 16 that has the higher efficiency calculated by the calculation unit 45. Select as power source.
  • the storage unit 47 stores the first table 471, the second table 472, and the third table 473. In addition to the above, the storage unit 47 stores various types of information as necessary.
  • control part 41 cannot operate the power conversion part 14 at the time of starting the power conditioner 1 of this embodiment, the efficiency of the power conditioner 1 is considered and the 1st control power supply 15 or 2nd The control power supply 16 cannot be selected.
  • the power conditioner 1 of the present embodiment preferentially selects the second control power supply 16 on the system side system 3 side as a power supply for supplying drive power to the control device 4 at the time of startup.
  • the power conditioner 1 is supplied with driving power from the second control power supply 16 to the control device 4.
  • the first measuring unit 42 measures the battery voltage V1 (S1). Then, the first determination unit 451 determines the efficiency ⁇ 1 of the first control power supply 15 (S2). The second measuring unit 43 (measures the system voltage V2 (S3). Then, the second determining unit 452 determines the efficiency ⁇ 2 of the second control power supply 16 (S4). 44 acquires the planned power information (S5) The planned power information indicates the planned charge power in the case of charging, indicates the planned discharge power in the case of discharge, and the third determination unit 453 performs the power conversion unit 14 (S6) After that, the calculation unit 454 uses the first control power source 15 as a power source for supplying driving power to the control device 4, and uses the second power as the power source. (S7) Then, the selection unit 46 has the highest power consumption efficiency of the first control power supply 15 and the second control power supply 16. This control power supply provides drive power to the control device 4 It selects as a power supply to supply (S8).
  • the first control power supply 15 when the first control power supply 15 is used as a power supply for supplying drive power to the control device 4 at the time of discharging, B1 / ⁇ 1 power is supplied from the storage battery 2 to the first control power supply 15.
  • the power supplied from the storage battery 2 to the first control power supply 15 is 111 [W].
  • the differential power 11 [W] (111 [W] ⁇ 100 [W]) is a loss.
  • B1 / ⁇ 2 power is supplied from the power converter 14 to the second control power supply 16.
  • the bidirectional converter (power conditioner 1) of the present embodiment described above is used by being inserted into an electric circuit between the first power system (storage battery 2) and the second power system (system side system 3). Bidirectional converter.
  • the bidirectional converter of this embodiment includes a power conversion unit 14, a control unit 41, a first control power supply 15 and a second control power supply 16, and a selection unit 46.
  • the power conversion unit 14 converts power bidirectionally between the first power system and the second power system.
  • the control unit 41 controls the power conversion unit 14.
  • the first control power supply 15 and the second control power supply 16 are provided so that each can receive power supply from the first power system or the second power system and supply drive power of the control unit 41 to the control unit 41.
  • the selection unit 46 selects a control power source having higher power consumption efficiency among the first control power source 15 and the second control power source 16 as a power source for supplying driving power to the control unit 41.
  • the power conditioner 1 of the present embodiment selects the control power source having the higher efficiency of the used power from the first control power source 15 and the second control power source 16. Thereby, in the power conditioner 1, since the control power supply which supplies drive electric power to the control apparatus 4 (including the control part 41) can be selected according to a use condition, the power conditioner 1 in the case of power conversion Efficiency can be improved.
  • the efficiency of the power conditioner 1 can be improved depending on the conditions of use, that is, charging or discharging.
  • the power charge can be reduced when the storage battery 2 is charged, and the discharge time of the storage battery 2 can be extended when the storage battery 2 is discharged.
  • the bidirectional converter preferably further includes a first measurement unit 42, a second measurement unit 43, an acquisition unit 44, and a calculation unit 45.
  • the 1st measurement part 42 measures the 1st voltage by the side of the 1st electric power system (storage battery 2).
  • the second measurement unit 43 measures the second voltage on the second power system (system side system 3) side.
  • the acquisition unit 44 acquires scheduled power to be converted between the first power system and the second power system.
  • the calculation unit 45 is a combination of the first voltage measured by the first measurement unit 42, the second voltage measured by the second measurement unit 43, and the scheduled power acquired by the acquisition unit 44.
  • the selection unit 46 supplies the control power having the higher efficiency calculated by the calculation unit 45 out of the first control power supply 15 and the second control power supply 16 to the control unit 41. Choose as.
  • the bidirectional converter (power conditioner 1) preferably further includes a storage unit 47, and the calculation unit 45 includes the following components.
  • the storage unit 47 stores a first table 471, a second table 472, and a third table 473.
  • the first table 471 the first voltage (battery voltage V1) and the efficiency of the first control power supply 15 are associated with each other.
  • the second table 472 the second voltage (system voltage V2) and the efficiency of the second control power supply 16 are associated with each other.
  • the combination of the first voltage, the second voltage, and the scheduled power is associated with the efficiency of the power conversion unit 14.
  • the calculation unit 45 includes a first determination unit 451, a second determination unit 452, a third determination unit 453, and a calculation unit 454.
  • the first determination unit 451 uses the first table 471 stored in the storage unit 47 and the efficiency of the first control power supply 15 corresponding to the first voltage measured by the first measurement unit 42. To decide.
  • the second determination unit 452 uses the second table 472 stored in the storage unit 47, and the efficiency of the second control power supply 16 corresponding to the second voltage measured by the second measurement unit 43. To decide.
  • the third determination unit 453 uses the third table 473 stored in the storage unit 47 to measure the first voltage measured by the first measurement unit 42 and the second measurement unit 43. The efficiency of the power conversion unit 14 corresponding to the combination of the second voltage and the scheduled power acquired by the acquisition unit 44 is determined.
  • the calculation unit 454 includes the efficiency of the first control power source 15 determined by the first determination unit 451, the efficiency of the second control power source 16 determined by the second determination unit 452, and the third determination unit 453.
  • the first control power source 15 is used as a power source for supplying drive power to the control unit 41 using the determined efficiency of the power conversion unit 14, the scheduled power acquired by the acquisition unit 44, and the drive power.
  • the efficiency and the efficiency when the second control power supply 16 is used as the power supply are calculated.
  • the bidirectional converter (power conditioner 1) of this embodiment electric power is supplied from the second power system (system side system 3) to the first power system (storage battery 2) via the power conversion unit 14.
  • the following conditions are preferably satisfied.
  • the planned power obtained by the first power system is A1
  • the drive power is B1
  • the efficiency of the first control power supply 15 is ⁇ 1
  • the efficiency of the second control power supply 16 is ⁇ 2
  • the efficiency of the power conversion unit 14 Is ⁇ 3.
  • the efficiency when the first control power supply 15 is used as a power supply for supplying drive power to the control unit 41 is A1 / [(A1 / ⁇ 3) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 1) ⁇ ].
  • the efficiency when the second control power supply 16 is used as a power supply for supplying drive power to the control unit 41 is A1 / ⁇ (A1 / ⁇ 3) + (B1 / ⁇ 2) ⁇ .
  • the bidirectional converter (power conditioner 1) of the present embodiment power is supplied from the first power system (storage battery 2) to the second power system (system side system 3) via the power conversion unit 14.
  • the planned power obtained by the second power system is A2, the drive power is B1, the efficiency of the first control power supply 15 is ⁇ 1, the efficiency of the second control power supply 16 is ⁇ 2, and the efficiency of the power conversion unit 14 Is ⁇ 3.
  • the efficiency when the first control power supply 15 is used as a power supply for supplying drive power to the control unit 41 is A2 / ⁇ (A2 / ⁇ 3) + (B1 / ⁇ 1) ⁇ .
  • the efficiency when the second control power supply 16 is used as the power supply for supplying drive power to the control unit 41 is A2 / [(A2 / ⁇ 3) + ⁇ B1 / ( ⁇ 3 ⁇ ⁇ 2) ⁇ ].
  • the first power system preferably includes the storage battery 2
  • the second power system preferably includes the power system 31.
  • the power conditioner 1 according to the second embodiment is different from the power conditioner 1 according to the first embodiment (see FIG. 1) in that the power conditioner 1 according to the second embodiment includes a power supply unit that is used at startup.
  • symbol is attached
  • the power conditioner 1 of the present embodiment includes power supply means.
  • the power supply means is provided separately from the storage battery 2 and the system side system 3 and supplies power to the first control power supply 15 and the second control power supply 16 at the time of startup.
  • the power conditioner 1 of the present embodiment is provided with an internal battery 18 as power supply means.
  • a solid line indicates an electric circuit
  • a broken line indicates a signal line other than the electric circuit.
  • the operation of the power conditioner 1 according to the present embodiment is the same as that of the first embodiment except that either the first control power supply 15 or the second control power supply 16 is operated by power supply from the internal battery 18 at the time of startup.
  • the operation is the same as that of the inverter 1.
  • the bidirectional converter preferably further includes power supply means (internal battery 18).
  • the power supply means is provided separately from the first power system (storage battery 2) and the second power system (system side system 3), and at least one of the first control power supply 15 and the second control power supply 16 at the time of startup. To supply power.
  • the power conditioner 1 of the present embodiment is internally provided as power supply means for supplying power to the first control power supply 15 and the second control power supply 16 separately from the storage battery 2 and the system side system 3 at the time of startup.
  • a battery 18 is provided.
  • the power conditioner 1 is started without receiving power supply from the storage battery 2 and the system side system 3. Can do.
  • the power conditioner 1 can be started even when not connected to the storage battery 2 or when the power system 31 is out of power.
  • the power supply means may be an external power supply input terminal (not shown) for connecting an external power supply (not shown) instead of the internal battery 18.
  • the power conditioner 1 operates either the first control power supply 15 or the second control power supply 16 by power supply from an external power supply connected to the external power supply input terminal at the time of startup.
  • the power conditioner 1 is started without receiving power supply from the storage battery 2 and the system side system 3. Can do.
  • the power supply means may only supply power to either the first control power supply 15 or the second control power supply 16. Also in this modified example, before selecting the higher one of the first control power supply 15 and the second control power supply 16, the power conditioner 1 is operated without receiving power supply from the storage battery 2 and the system side system 3. Can be activated.
  • the charge / discharge power conditioner 1 inserted between the storage battery 2 and the power system 31 has been described as a bidirectional converter.
  • the bidirectional converter includes the power conditioner 1. Not exclusively. That is, the bidirectional converter may be a DC / AC converter other than the power conditioner 1.
  • the DC / AC converter converts direct current (direct current power, direct current voltage, direct current) into alternating current (alternating current power, alternating voltage, alternating current) in the direction from the first power system side to the second power system side. And alternating current is converted to direct current in the direction from the second power system side to the first power system side.
  • the bidirectional converter may be a DC / DC converter.
  • the DC / DC converter converts direct current (direct current power, direct current voltage, direct current) into direct current (direct current power, direct current voltage, direct current) of different magnitudes in any direction. That is, the DC / DC converter is in any of the direction from the first power system side to the second power system side and the direction from the second power system side to the first power system side. Also, the direct current is converted into a direct current having a magnitude different from that of the direct current.
  • the bidirectional converter may be an AC / AC converter.
  • the AC / AC converter is, for example, a cycloconverter or the like, and alternating current (alternating current power, alternating voltage, alternating current) of alternating current (alternating current power, alternating voltage, alternating current) with a different magnitude or frequency in any direction ). That is, the AC / AC converter is in any of the direction from the first power system side to the second power system side and the direction from the second power system side to the first power system side. Also, alternating current is converted into alternating current having a magnitude or frequency different from that of the alternating current. For example, it can be used when a plug-in hybrid vehicle that inputs and outputs alternating current is connected to an electric power system.
  • the system side system 3 connected to the power conditioner 1 may include a photovoltaic power generation facility (solar cell panel, power conditioner).
  • the power conditioner 1 as a bidirectional converter may charge the storage battery 2 using the output from the photovoltaic power generation facility as a direct current. That is, you may charge the storage battery 2 with direct current, without converting the output from photovoltaic power generation equipment into alternating current.
  • the output from the photovoltaic power generation facility may be converted into alternating current, and the storage battery 2 may be charged using the alternating current.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Inverter Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

La présente invention se rapporte à un convertisseur bidirectionnel, tel qu'un conditionneur de puissance, qui comprend une unité de conversion d'énergie électrique, une unité de commande, une première alimentation électrique de commande, une seconde alimentation électrique de commande et une unité de sélection. L'unité de conversion d'énergie électrique convertit de manière bidirectionnelle l'énergie électrique entre une première source d'alimentation en énergie électrique, telle qu'une cellule de stockage, et une seconde source d'alimentation en énergie électrique telle qu'un système côté réseau électrique. L'unité de commande gère l'unité de conversion d'énergie. La première source d'alimentation en énergie électrique et la seconde source d'alimentation en énergie électrique sont agencées de sorte à pouvoir fournir une puissance d'excitation de l'unité de commande à l'unité de commande par réception d'une fourniture de courant provenant de la première source d'alimentation en énergie électrique ou de la seconde source d'alimentation en énergie électrique. L'unité de sélection sélectionne la première source d'alimentation en énergie électrique ou la seconde source d'alimentation en énergie électrique celle qui utilise l'énergie de manière plus efficace en tant que source d'alimentation électrique pour fournir la puissance d'excitation à l'unité de commande.
PCT/JP2013/006664 2012-11-30 2013-11-13 Convertisseur bidirectionnel WO2014083788A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-263276 2012-11-30
JP2012263276A JP5938679B2 (ja) 2012-11-30 2012-11-30 双方向コンバータ

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WO2014083788A1 true WO2014083788A1 (fr) 2014-06-05

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MY (1) MY169416A (fr)
WO (1) WO2014083788A1 (fr)

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