WO2008096664A1 - 磁気エネルギー回生スイッチを用いた交流/直流電力変換装置 - Google Patents
磁気エネルギー回生スイッチを用いた交流/直流電力変換装置 Download PDFInfo
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- WO2008096664A1 WO2008096664A1 PCT/JP2008/051600 JP2008051600W WO2008096664A1 WO 2008096664 A1 WO2008096664 A1 WO 2008096664A1 JP 2008051600 W JP2008051600 W JP 2008051600W WO 2008096664 A1 WO2008096664 A1 WO 2008096664A1
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- Prior art keywords
- power
- inductance
- secondary battery
- power supply
- phase
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 47
- 238000011084 recovery Methods 0.000 title 1
- 230000002441 reversible effect Effects 0.000 claims abstract description 40
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- 239000004065 semiconductor Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims description 11
- 230000001172 regenerating effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 230000006641 stabilisation Effects 0.000 description 4
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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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
- B60L53/20—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
-
- 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
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- 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
- H02M7/4815—Resonant converters
-
- 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
- Y02T90/12—Electric charging stations
-
- 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 is a charger for charging a secondary battery such as an electric vehicle or a hybrid vehicle mainly from a charging power source in a garage, and forward-converts from an AC power source to DC and reverse-converts from DC to AC.
- the present invention relates to a reversible converter for AC Z DC power using a magnetic energy regenerative switch with functions.
- the diffusion of electric vehicles can be covered by electricity that emits less carbon dioxide from natural energy such as nuclear power, wind power, and the sun instead of oil. Since it will increase, its spread is expected.
- a hybrid vehicle running on both a secondary battery and an engine can be expected to reduce fuel consumption, so this is expected as well, but a plug-in hybrid vehicle with a large proportion of electricity uses less electrical energy.
- the gasoline engine is a car that runs with assistance, and is considered to be a bridge to a fully electric car. Electric vehicles are charged using commercial AC power from the power grid, but can be charged anywhere because the distribution line infrastructure is in place.
- Fig. 2 is a circuit block diagram showing the configuration of a conventional PWM inverter converter.
- AC Z-DC reversible power conversion is performed by using a converter configuration converter 1 Turns on and off faster than the frequency of 6 to generate a square-wave voltage waveform (PWM: called pulse-wise modulation) and generates a pseudo-AC voltage, and delays the phase of the pseudo-AC relative to the AC power supply 6
- PWM square-wave voltage waveform
- AC inductance 4 has the advantage that it can be small because the PWM frequency is high.
- Fig. 3 is a circuit block diagram showing the configuration of a PWM inverter converter equipped with a DC up-compressor. For example, as shown in Fig. 3, a DC up-converter is installed between the secondary battery 2 and the capacitor 7. It was necessary to take measures such as voltage adjustment at 0.
- the voltage fluctuation is large, and in a lithium secondary battery, the voltage drops to nearly 70% after discharge.
- the present invention has been made in view of the problems of the conventional AC Z DC power reversible converter as described above, and has a high efficiency AC DC power converter that eliminates the need for voltage adjustment by a DC up-converter.
- the purpose is to provide Means for solving the problem
- the present invention relates to an AC / DC power converter having forward conversion function from AC to DC and reverse conversion function from DC to AC, and the object of the present invention is to provide four reverse conducting semiconductor switches.
- a bridge circuit a capacitor 7 connected between the DC terminals of the bridge circuit and storing magnetic energy when the current is interrupted, and a control signal applied to the gate of each of the reverse conducting semiconductor switches,
- a magnetic energy regenerative bidirectional switch comprising a control device for performing on / off control of a conductive semiconductor switch, and an AC inductor having one end connected to the AC power source 6 and the other end connected to the AC terminal of the bridge circuit.
- a DC inductance 3 having one end connected to the secondary battery 2 of the DC power source and the other end connected to the DC terminal of the bridge circuit,
- the resonant frequency determined by the capacitance C of the capacitor 7 and the AC inductance 4 is higher than the frequency of the AC power supply 6.
- the control device sets the voltage of the AC power source 6 to Synchronously, the pair located on the diagonal line of the reverse conducting semiconductor switch is simultaneously turned on and off, and the control signal is controlled so that two pairs are not simultaneously turned on.
- the forward conversion is performed by delaying the phase of the AC power supply from the phase of the AC power supply, and the reverse conversion is performed by causing the phase of the control signal to advance from the phase of the AC power supply. Accomplished by a conversion device.
- the object of the present invention is to insert an AC switch 5 that is controlled to be opened / closed by the control device between the AC inductance 4 and the AC power source 6.
- the AC switch 5 is opened to cut off the AC power supply 6 to generate a simulated synchronization signal in place of the AC power supply and to reverse the conversion by advancing the phase of the control signal. This is effectively achieved by switching back to the secondary battery 2 or reversely converting the DC power from the other DC power source or continuing to supply AC power to the AC load.
- the object of the present invention is to insert a DC switch between the DC inductance 3 and the secondary battery 2 or between the DC inductance 3 and the direct current terminal of the bridge circuit.
- it is more effectively achieved by providing the control device with a communication means for performing communication with the outside.
- the present invention relates to a charge / discharge control system for a secondary battery using the AC Z-DC power converter, and the object of the present invention is connected to an AC power source of a power system and a secondary battery of a DC power source.
- One or a plurality of the AC / DC power converters and a server at the external central control base 9 are connected to each other via a communication line 8 such as the Internet, and the server is connected to the power system.
- the charging status of the secondary battery is monitored, According to the supply and demand state, a forward conversion or reverse conversion instruction is sent to the control device, and charging and discharging of the secondary battery is controlled, thereby stabilizing the power of the power system. This is achieved by a secondary battery charge / discharge control system.
- FIG. 1 is a circuit block diagram showing the configuration of an AC / DC power converter according to the present invention.
- FIG. 2 is a circuit block diagram showing the configuration of a conventional PWM inverter com- parator.
- FIG. 3 is a circuit block diagram showing the configuration of a PWM inverter / comparator equipped with a DC upconverter.
- FIG. 4 is a diagram showing the phase relationship between the AC power supply voltage and the semiconductor switching gate signal.
- Fig. 5 shows the simulation result 1 (inverted inverter operation with a DC voltage of 140V, phase advance of 30 degrees).
- Fig. 6 shows the simulation result 2 (inverse conversion chamber with DC voltage of 100V, phase advance 30 degrees).
- Figure 7 shows the simulation result 3 (forward conversion converter with 140V DC voltage, phase delay 30 degrees).
- Figure 8 shows the simulation result 4 (forward conversion converter with DC voltage of 100V, phase delay 30 degrees).
- FIG. 9 is a functional block diagram of the control device.
- FIG. 10 is a diagram for explaining the progress of the magnetic energy regeneration switch.
- Fig. 1 1 shows the reverse of DC to AC from an oscillator using a magnetic energy regenerative switch. It is a figure for demonstrating the progress to a converter.
- the present invention uses a magnetic energy regeneration switch 1 disclosed in Japanese Patent No. 3 6 3 4 9 8 2 to connect an AC inductance 4 and a capacitor 7 between the AC power source 6 and a semiconductor switch pair (SW1, SW3 ) And (SW2, SW4) are alternately turned on and off, and the resonance vibration that magnetic energy comes to and from the capacitor 7 continues.
- Figure 10 shows a circuit that drives an inductance that stores magnetic energy using magnetic energy regenerative switches in series.
- Figure 10 shows both the well-known magnetic energy regenerative switch (MERS) and its dual circuit (Dual MERS).
- the voltage source is the current source, L is the C, and the series is the parallel. It is a circuit.
- Fig. 11 shows an AC power oscillation circuit in which a DC current source is connected to a capacitor and power is input from DC, and an AC power supply is connected to the AC side.
- the present invention provides a reversible conversion from DC to AC power with a minimum configuration, and is turned on and off once per cycle.
- the switching loss is reduced by performing only control, and the resonance frequency with the AC inductance 4 that the DC capacitor 7 of the bridge is installed for coupling with the AC power supply 6 is set close to the frequency of the AC power supply 6.
- AC inductance 4 forms a series filter of power supply frequencies, so that high frequency noise from external systems and AC loads can be eliminated.
- the capacitor 7 is discharged each time. A period when the voltage becomes zero occurs, and an ideal zero voltage / zero current on / off is realized for a semiconductor switch, which further reduces loss.
- the voltage of the oscillating capacitor 7 can be increased or decreased by controlling the delay of the phase of the gate signal of the semiconductor switch with respect to the phase of the AC power source 6.
- the PWM control performed in the conventional reversible converter is not performed, and there is no accompanying noise, so that the harmonic fill is unnecessary.
- the control device not only operates these power sources but also includes communication means (not shown) for communication with the outside.
- the control unit 9 (server) is connected via a communication line 8 such as the Internet. It has the function of sending data to and receiving commands, and can change the charging power by external commands, thereby contributing to the stabilization of local power.
- FIG. 1 shows an embodiment, in which a reverse conducting semiconductor switch is configured as a bridge, and a capacitor 7 for storing magnetic energy is connected to a DC terminal. Unlike the conventional single-phase inverter, this capacitor 7 has a small capacity and only stores magnetic energy, so the voltage is charged and discharged to the peak and zero voltage in each half cycle.
- the charge / discharge current waveform is the angular frequency ⁇ of the AC power supply 6.
- the relational expression between capacitance C and AC inductance L is
- the voltage source capacitor 7 of the single-phase inverter has a significantly smaller capacity than the conventional PWM converter.
- the coupling with the DC circuit has a DC inductance 3 that is sufficiently smooth as seen from the oscillation frequency.
- the vibration frequency is ⁇ .
- the voltage is about the average value of AC voltage.
- the voltage of the DC power source 2 can be reversely converted even if it is smaller than the voltage source of the conventional PWM inverter.
- the DC power source 2 may be a single battery or a combination of various batteries, the DC output of an engine generator, a fuel cell, and a DC load.
- a lithium ion secondary battery that can be charged and discharged is assumed. And explain.
- a large reactance is required to shape the current waveform.
- the reactance voltage is selected from 50% to 100%. If this inductance is connected to the AC system via a transformer, leakage of the transformer may be used, so there is little increase in new loss.
- the AC inductance 4 is connected to an AC power source 6 via an AC load and an AC switch 5.
- the AC switch 5 allows the AC load to continue to operate even if it is disconnected from the AC power supply 6 if there is an abnormality such as a power failure in the upstream AC power.
- the control device has the function of detecting the voltage phase of the AC power supply 6 and the function of sending the necessary gate signals to the four semiconductor switches (SW1 to SW4). Signals are sent simultaneously to the paired semiconductors (SW1-SW3, SW2-SW4) located on the diagonal, but the ON signals are not sent simultaneously to the upper and lower semiconductors. This is because the capacitor voltage is short-circuited.
- control device The functions of the control device are shown in Fig. 9, and it is possible to dynamically increase or decrease the charging power in coordination with the server at the external centralized control base 9 via the communication line 8 such as the Internet.
- the effect has been described in Patent Document 1 using an electric water heater as an example.
- natural energy such as wind power generation and solar power generation can be applied to a power generation apparatus that changes with time in a period of several tens of seconds.
- the charging power source (secondary battery) of the present invention can also be a variable load that serves as a buffer. This is because there is no problem even if the charging power of the secondary battery changes over time, and ultimately, only the accumulated energy charged is of interest.
- the power grid or the power company can reduce the operation to maintain the system frequency by the generated power, that is, LFC control.
- LFC control the generated power
- the AC / DC power converter according to the present invention contributes to the stability of the power system at night by performing centralized control via the Internet during charging in the garage.
- power generation facilities and spare power generation facilities at the time of failure will be unnecessary for LFC control, and that it will also serve as a buffer for fluctuations in solar and wind power generation.
- the external centralized control base 9 collects data from a large number of AC Z-DC power converters, and sends optimal operation control data to individual AC Z-DC power converters from the power system. .
- DC power supply (secondary battery) 100V or 140V
- Figure 4 shows the relationship between the voltage phase of the gate signal and the lead angle of 60 degrees.
- Figure 5 shows the case of reverse conversion from direct current to alternating current at 140V and a reverse conversion advance angle of 30 degrees.
- Figure 6 shows the case where the reverse conversion advance angle is 30 degrees at 100V during reverse conversion from DC to AC.
- Figure 7 shows the case where the reverse conversion delay angle is 30 degrees at 140V during forward conversion from AC to DC.
- Figure 8 shows the case where the reverse conversion delay angle is 30 degrees at 100 V during forward conversion from AC to DC.
- Table 1 shows power control by phase control. Table 1 When DC voltage is 1400 V, power by phase control
- the AC power source 6 can be shut off at 5 and the AC power can be reversely converted from the DC power source 2 and the AC load can continue to operate, there is a control device for the AC switch 5 for this purpose. Since the phase control of the gate control signal can control forward conversion from AC to DC and vice versa, the communication system such as the Internet receives commands from the external integrated external centralized control base 9 and Alternatively, it can have a function contributing to power stabilization of the micro grid.
- the AC Z-DC power converter according to the present invention requires a large AC inductance 4 compared to the conventional PWM converter.
- the current waveform is harmonic with one cycle on / off. There are very few waves. Slightly lower-order harmonic distortion remains, but this will be canceled if it is made three-phased. Switching loss can be greatly reduced by reducing the number of on / off cycles.
- the size and capacity of the DC link capacitor are reduced from 1/10 to 1/20. If the principle of the magnetic energy regenerative switch is used as in the present invention, the DC link capacitor 7 only needs to have a capacity for storing the magnetic energy, and thus can be made smaller than the PWM converter.
- the semiconductor switch Since the resonance frequency determined by the capacitor capacitance C and AC inductance L is set to be higher than the AC power supply frequency, the semiconductor switch is turned off at zero voltage and the current is inductive.
- the ideal zero voltage / zero current switching is realized for so-called semiconductor switches that do not rise rapidly due to the presence of an event.
- the AC / DC power converter of the present invention is adopted in the charging system of electric vehicles and plug-in hybrid vehicles that are expected to become widely used in the future, it will become possible to perform forward and reverse bidirectional charging and discharging. It is thought that the power system with nuclear power will not have sufficient frequency adjustment capability at night, but it will support conventional variable speed pumped storage power generation.
- the power grid will be burdened by transacting the electricity sales of wind power generators from the electric power market and receiving power in real time according to changes in the amount of wind power generation.
- the postage which is the borrowing fee for transmission lines and distribution lines
- Electric vehicles can operate with fully renewable energy. It becomes a business model that promotes the introduction of natural energy. Or, it can be said that the electric vehicle to be recharged is operated with energy that does not emit carbon dioxide gas reliably at night and only during the time when nuclear power generation is mainly used.
- the realization of these business models is played by a major external integrated central control base9.
- the external integrated external centralized control base 9 knows not only the frequency control of the power system, but also the AC voltage and phase connected to all AC DC power converters (chargers) distributed in the region. Therefore, it is possible to play a role of local power system, distributed microgrid power stabilization device, and power storage device by controlling the AC Z-DC power converter so as to buffer local voltage fluctuations and charging and discharging. There is sex.
- the core is the forward-reverse bidirectional AC Z DC power converter of the present invention.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08704309.7A EP2112758A4 (en) | 2007-02-06 | 2008-01-25 | AC / DC POWER CONVERTING DEVICE USING A MAGNETIC ENERGY RECOVERY SWITCH |
CN2008800040887A CN101611536B (zh) | 2007-02-06 | 2008-01-25 | 交流/直流电力转换装置及二次电池的充电放电控制系统 |
US12/525,542 US8097981B2 (en) | 2007-02-06 | 2008-01-25 | AC/DC power converter using magnetic energy recovery switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007026273A JP4441691B2 (ja) | 2007-02-06 | 2007-02-06 | 交流/直流電力変換装置 |
JP2007-026273 | 2007-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008096664A1 true WO2008096664A1 (ja) | 2008-08-14 |
Family
ID=39681575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/051600 WO2008096664A1 (ja) | 2007-02-06 | 2008-01-25 | 磁気エネルギー回生スイッチを用いた交流/直流電力変換装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8097981B2 (ja) |
EP (1) | EP2112758A4 (ja) |
JP (1) | JP4441691B2 (ja) |
CN (1) | CN101611536B (ja) |
WO (1) | WO2008096664A1 (ja) |
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US20130010507A1 (en) * | 2010-01-15 | 2013-01-10 | Merstech, Inc. | Protected power conversion device and control method |
US8482945B2 (en) | 2008-09-26 | 2013-07-09 | Merstech, Inc. | Power converter with magnetic recovery switch |
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- 2008-01-25 WO PCT/JP2008/051600 patent/WO2008096664A1/ja active Application Filing
- 2008-01-25 US US12/525,542 patent/US8097981B2/en not_active Expired - Fee Related
- 2008-01-25 EP EP08704309.7A patent/EP2112758A4/en not_active Withdrawn
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8482945B2 (en) | 2008-09-26 | 2013-07-09 | Merstech, Inc. | Power converter with magnetic recovery switch |
FR2946810A1 (fr) * | 2009-06-16 | 2010-12-17 | Renault Sas | Dispositif de charge rapide reversible pour vehicule electrique |
WO2010146092A1 (en) * | 2009-06-16 | 2010-12-23 | Renault S.A.S. | Rapid reversible charging device for an electric vehicle |
CN102015355A (zh) * | 2009-06-16 | 2011-04-13 | 雷诺股份公司 | 用于电气车辆的迅速可逆充电设备 |
US8917046B2 (en) | 2009-06-16 | 2014-12-23 | Renault S.A.S. | Rapid reversible charging device for an electric vehicle |
US20130010507A1 (en) * | 2010-01-15 | 2013-01-10 | Merstech, Inc. | Protected power conversion device and control method |
Also Published As
Publication number | Publication date |
---|---|
US8097981B2 (en) | 2012-01-17 |
EP2112758A4 (en) | 2013-07-03 |
US20100090533A1 (en) | 2010-04-15 |
CN101611536B (zh) | 2012-08-29 |
CN101611536A (zh) | 2009-12-23 |
JP2008193817A (ja) | 2008-08-21 |
EP2112758A1 (en) | 2009-10-28 |
JP4441691B2 (ja) | 2010-03-31 |
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