WO2006090675A1 - 電力変換装置 - Google Patents
電力変換装置 Download PDFInfo
- Publication number
- WO2006090675A1 WO2006090675A1 PCT/JP2006/303001 JP2006303001W WO2006090675A1 WO 2006090675 A1 WO2006090675 A1 WO 2006090675A1 JP 2006303001 W JP2006303001 W JP 2006303001W WO 2006090675 A1 WO2006090675 A1 WO 2006090675A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- voltage
- power supply
- maximum
- inv
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- 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
- H02M1/0077—Plural converter units whose outputs are connected in series
Definitions
- the present invention relates to a power conversion device that converts DC power into AC power, and more particularly to a power conversion device that is used in a power conditioner or the like that links a distributed power source to a system.
- a distributed power supply that is a solar cell is also boosted using a chiyotsuba, and an inverter of PWM control is inserted in the subsequent stage to output power. AC voltage is generated.
- the DC power output from the solar cell drives the internal control power supply of the power conditioner and enables the internal circuit to operate.
- the internal circuit includes a chiyotsuba circuit and an inverter unit, and the chiyotsuba circuit boosts the voltage of the solar cell to a voltage required to connect to the grid.
- the inverter section is composed of four switch forces and performs PWM switching so that the output current has a phase synchronized with the system voltage. In this way, a strip-shaped waveform is output to the output, and the average voltage of the output is controlled by changing the output time ratio.
- the output voltage is averaged by the smoothing filter provided on the output side, and sent to the system.
- AC power is output (see Non-Patent Document 1, for example).
- Non-Patent Document 1 “Development of Solar Power Conditioner Type KP40F” OMRON TECHNIC S Vol.42 No.2 (Volume 142) 2002
- the maximum value of the output voltage of the inverter is determined by the magnitude of the boosted voltage by the chopper. For this reason, for example, when outputting an AC voltage of 200V, the boosted DC voltage needs to be 282V or higher, and is usually set higher with a margin.
- the output voltage of solar voltage is Usually, it is about 200V or less, and it is necessary to boost it to 282V or more as mentioned above. If the boost ratio is increased, the loss of the chopper becomes larger, and the efficiency of the entire power conditioner is lowered.
- the present invention has been made to solve the above-described problems.
- the power converter that converts the power of the DC power source into AC and outputs the AC power to the system and the load, each part It is an object of the present invention to obtain a power conversion device that improves the conversion efficiency by reducing the loss of the power supply and promotes the downsizing of the device configuration.
- a plurality of AC sides of a single-phase inverter that converts DC power of a DC power source into AC power are connected in series, and a predetermined combination selected from the plurality of single-phase inverters is used.
- the output voltage is controlled by the sum of the generated voltages.
- the first and second DC power supplies that are input to the first and second single-phase inverters connected to each other on the AC side in the single-phase inverters are connected to each other via a DC / DC converter. Is done.
- the DCZDC converter supplies power from the first DC power source having a higher voltage to the second DC power source having a lower voltage via the switching elements in the first and second single-phase inverters. Supply.
- a smooth output voltage waveform can be obtained with high accuracy by combining the voltages of each single-phase inverter, and the filter on the output side can be downsized or omitted, and the device configuration is small and inexpensive.
- power is supplied from the first DC power supply to the second DC power supply between the DC power supplies that are input to each single-phase inverter, and the total sum of the voltages of each single-phase inverter is output. High voltage can be output due to loss.
- the DC / DC converter supplies power from the first DC power source to the second DC power source via the switching elements in the first and second single-phase inverters. Can supply power. This improves conversion efficiency, is small and inexpensive Thus, a power conversion device configured as described above can be obtained.
- FIG. 1 A schematic configuration diagram showing a power conditioner according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing a circuit configuration of the power conditioner according to the first embodiment of the present invention.
- FIG. 3 is a diagram for explaining the operation of the DCZDC converter according to Embodiment 1 of the present invention.
- FIG. 4 shows a power conditioner according to Embodiment 2 of the present invention.
- FIG. 5 is a diagram showing an example of a DCZDC converter according to Embodiment 2 of the present invention.
- FIG. 6 is a diagram for explaining the operation of a DCZDC converter according to a second embodiment of the present invention.
- FIG. 7 is a diagram showing another example of the DCZDC converter according to the second embodiment of the present invention.
- FIG. 8 is a diagram showing a circuit configuration of a power conditioner according to Embodiment 3 of the present invention.
- FIG. 9 is a diagram for explaining the operation of the DCZDC converter according to the third embodiment of the present invention.
- FIG. 10 is a diagram showing a bidirectional DCZDC converter according to a fourth embodiment of the present invention.
- FIG. 11 is a diagram showing a bidirectional DCZDC converter according to another example of the fourth embodiment of the present invention.
- FIG. 12 is a diagram showing a bidirectional DCZDC converter according to a second other example of the fourth embodiment of the present invention.
- ⁇ 14 Schematic configuration diagram showing a power conditioner according to Embodiment 7 of the present invention.
- ⁇ 15 Configuration diagram of a bypass circuit according to Embodiment 7 of the present invention.
- FIG. 16 is a configuration diagram of another example of the bypass circuit according to the seventh embodiment of the present invention.
- FIG. 17 is a configuration diagram of a second alternative example of the bypass circuit according to the seventh embodiment of the present invention.
- a power converter according to Embodiment 1 of the present invention (hereinafter referred to as a power conditioner) will be described below with reference to the drawings.
- FIG. 1 is a schematic configuration diagram showing a power container according to Embodiment 1 of the present invention.
- multiple (in this case, three) single-phase inverters 2B-INV, 3B-INV, and IB-1 NV are connected in series to connect inverter unit 1 that is a single-phase multiple converter.
- Each single-phase inverter 2B-INV, 3B-INV, 1B-INV has a diode connected in antiparallel. Consists of a plurality of IGBTs and other self-extinguishing semiconductor switching elements.
- Single-phase inverter 3B-input Single-phase inverter 1B-IN is connected to one of the AC side terminals of 3B-INV.
- Single-phase inverter 2B-INV is connected to the other.
- self-extinguishing semiconductor switching elements Qx, Qy such as two IGBTs with diodes connected in anti-parallel as a short-circuit switch that short-circuits both AC side terminals of single-phase inverter 3B-INV are connected to single-phase inverter 3B.
- -I Connected to NV in parallel.
- a boosting booster circuit 3 comprising a switching element (hereinafter referred to as a switch) 3a such as an IGBT 3a, a rear tuttle 3b, and a diode 3c is provided after the direct-current power supply 2 by sunlight as a third direct-current power supply. is set up.
- the boosting chiba circuit 3 boosts the DC voltage V obtained by the DC power source 2 and charges the smoothing capacitor that becomes the DC power source V (potential V).
- Each single-phase inverter 2B-INV, 3B-INV, IB-INV is a DC of each DC power supply V, V, V
- the DC power supply V is referred to as the maximum DC power supply V
- the single-phase inverter 3B-INV is the maximum single-phase inverter 3B-INV.
- V V ⁇ (2/9) -V. That is, inverter 1B-INV, 2 ⁇ - ⁇
- Inverter unit 1 determines the voltage V as a sum total of these generated voltages. Output by adjusting control. This output voltage V is the rear tuttle 6a
- System 5 is assumed to be grounded at midpoint R with a columnar transformer.
- FIG. 2 shows the DCZDC converter 4 that connects the DC power sources V 1, V 2, and V 3.
- FIG. 2 shows a circuit configuration including the DCZDC converter 4 of the power conditioner, but for convenience, the DC power supply 2 and the boosting chiba circuit 3 are not shown.
- the DC / DC converter 4 is composed of the chopper circuits 7a and 7b, the chopper circuit 7a is connected between the maximum DC power supply V and the DC power supply V, and the chopper circuit 7b is connected to the maximum DC power supply V.
- Each chopper circuit 7a, 7b has a rear tuttle Ll, L2, diode
- the maximum DC power supply V is connected to the maximum single-phase inverter by the operation of the chiyotsuba circuit 7b.
- Power is supplied to DC power supply V via 3B-INV and single-phase inverter 2B-INV. Also,
- 3B 1B Prevents direct current from flowing back to each potential of the power supply V.
- each single-phase inverter 2B-INV, 3B-INV, IB-INV and chopper circuits 7a and 7b will be described with reference to FIG.
- single-phase inverter 1B-INV output and single-phase inverter 2B-INV output are equal to each single-phase inverter 1B-INV
- 2B-INV is the target output voltage and maximum single-phase inverter Output by PWM control to compensate for the difference from the 3B-INV output voltage.
- the current is controlled to flow into the system 5, but if the rear tuttle 6a provided on the output side is very small, the output voltage V of the inverter unit 1 is averaged. The difference with the grid voltage is small and can be considered to be almost the same.
- the switching element Q12 is turned on, and the switching elements Qll and Q14 are alternately turned on. Because switching elements Q31 and Q12 are on during this T period
- the maximum DC power supply V power is also applied to the switching elements Q31 and Q12.
- Reactor L1 is charged by current iLl flowing through, and DC power source V is supplied from current iLlx flowing through diode DzlA from rear tuttle L1.
- the switching element Q31, Q32 is turned on and the single-phase inverter is turned on during the T period.
- 1B-INV outputs a positive voltage by PWM control, turns on switching device Q13, and turns on switching devices Ql l and Q 14 alternately. In this T period, switch Qs
- V power is the maximum single-phase inverter 3B-INV and
- DC power supply V can be supplied via single-phase inverter 1B-INV.
- the switching element Q24 is turned on, and the switching elements Q22 and Q23 are alternately turned on. During this T period, switching elements Q33 and Q24 are on.
- the rear tuttle L2 is charged by the current iL2 flowing through it, and is supplied to the DC power source V by the current iL2x flowing through the diode Dz2 A from the rear tuttle L2.
- the reverse tutor L2 is charged by the current iL2 flowing through the anti-parallel diode and DC power supply V.
- DC power supply V can be supplied via single-phase inverter 2B-INV.
- an output voltage waveform close to a sine wave can be obtained with high accuracy by combining the generated voltages of the single-phase inverters 2B-INV, 3B-INV, and 1B-INV.
- the smoothing filter 6 on the side can be reduced in capacity or omitted, and the apparatus configuration can be reduced in size.
- the DC voltage V obtained by boosting the solar voltage V by the boosting chiba circuit 3 is used as the DC power source.
- the power conditioner is configured to obtain the output voltage by the sum of the generated voltages, a voltage higher than the DC voltage V boosted by the boosting chiba circuit 3 can be output efficiently.
- the DCZDC converter 4 is composed of rear tuttles Ll and L2, rectifying elements DzlA and Dz2A, and switcher circuits 7a and 7b that also have switch Qs and Qr forces.
- transformer leakage inductance can be supplied with high-efficiency power transmission that eliminates the decrease in efficiency due to excitation inductance, and the voltage of DC power supplies V and v can be set.
- the maximum single-phase inverter 3B-INV uses the positive electrode of the maximum DC power supply V as the AC output power.
- the chitsuba circuits 7a and 7b turn on and off the switches Qs and Qr to charge the rear tuttle Ll and L2, and the rear tuttle Ll and L2 Power diodes DzlA, Dz2A ensures that the current flowing through DzlA and Dz2A
- the maximum single-phase inverter 3B-INV is centered and the single-phase inverters 2B-INV and 1B-INV are arranged and connected on both sides, the maximum DC power supply V of the maximum single-phase inverter 3B-INV Easy and effective for DC power supplies V and V of each single-phase inverter 2B-INV and 1B-INV on both sides
- the DCZDC comparator 4 is composed of chopper circuits 7a and 7b including rear tuttles Ll and L2, rectifying elements DzlA and Dz2A, and switches Qs and Qr. Force
- the rear tuttles L1 and L2 of the respective chopper circuits 7a and 7b are magnetically coupled by a magnetic coupling core 100 made of a magnetic material.
- the configuration other than the magnetic coupling of the rear tuttles Ll and L2 is the same as that in the first embodiment.
- the DC power supply 2 and the boosting chiba circuit 3 are not shown.
- both the chopper circuits 7a and 7b can use the above energy, and can supply not only the DC power source V but also the DC power source V. Same
- the switch Qr of the chopper circuit 7b is turned on and off, and the energy accumulated in the rear tuttle L2 is transferred to the rear tuttle L1 at the rate of magnetic coupling, so that only the DC power supply V In addition, it can supply power to the DC power supply V.
- each DC power supply V 1, V 2 is a DC power supply
- each DC power source V 1, V 2 V is the maximum single-phase inverter 3 over one period of the basic AC wave.
- each chitsuba circuit 7a, 7b is connected to each DC power source V, V by 1
- each of the rear tuttles Ll and L2 is connected to the two reactors Ll and L2. Configure each winding so that the polarity of the induced electromotive force is in the same direction
- the single-phase inverter 1B-INV outputs a positive voltage with PWM control.
- V is supplied from the maximum DC power supply V.
- the current iLl charges the rear tuttle L1 of the chopper circuit 7a to accumulate energy, but energy is also transferred to the rear tuttle L2 of the chopper circuit 7b that is magnetically coupled to the rear tuttle L1. At this time, the current iL2 does not occur because the force diode Dz2A, which generates a voltage in the same polarity as the rear tuttle L1, in the rear tuttle L2 blocks the current.
- each of the rear tuttles Ll and L2 supplies currents iLlx and iL2x with the stored energy, and supplies power to the DC power sources V and V, respectively. in this way,
- the single-phase inverter 2B-INV outputs a negative voltage by PWM control.
- IB 2B is powered from the maximum DC power supply V.
- the current iL2 flows through Q24, and during the period T, the switching element from the maximum DC power source V
- the current iL2 is passed through the anti-parallel diode of Q33, switching element Q21, and DC power supply V.
- the current iL2 charges the rear tuttle L2 of the chopper circuit 7b and accumulates energy. The energy is also transferred to the rear tuttle L1 of the chopper circuit 7a that is magnetically coupled to the rear tuttle L2. At this time, voltage is generated in the rear tuttle L1 in the same polarity as the rear tuttle L2. The current iLl is not generated because the power diode DzlB blocks the current.
- each of the rear tuttles Ll and L2 supplies currents iLlx and iL2x to the DC power sources V and V, respectively, using the stored energy. in this way,
- each of the rear tuttles Ll and L2 is connected to the two reactors Ll and L2.
- Each winding is configured so that the polarities of the induced electromotive forces are opposite to each other, and a gap is provided in the magnetic coupling core 100 to adjust the strength of the magnetic coupling.
- each DC power source V 1 and V 2 has a maximum DC power source.
- the magnetic coupling core 100 adjusts the strength of the magnetic coupling between the rear tuttle L1 and the rear tuttle L2 with a gap provided in the magnetic coupling core 100.
- both DC power supplies V and V can be supplied.
- Inrush current is prevented from flowing into the source V by the gap provided in the magnetically coupled core 100.
- the maximum DC power supply V of the maximum single-phase inverter 3B-INV is the same as that of the third DC power supply.
- the direct current voltage V obtained by the direct current power source 2 with sunlight is increased by the step-up chopper circuit 3 o
- the DC power supply 2 and the boost chopper circuit 3 are omitted for the sake of convenience.
- DCZD so that the voltage V, V, V of the DC power supply has a predetermined voltage ratio
- V: V: V 1: 3: 9.
- DCZDC converter 4 is composed of chopper circuits 7a and 7b.
- Chopper circuit 7a is connected between DC power supply V and DC power supply V
- chopper circuit 7b is connected between maximum DC power supply V and DC power supply V.
- Each of the chopper circuits 7a and 7b includes a rear tuttle Ll and L2, diodes DzlA and Dz2A, and switches Qs and Qr, and each operates as a DC / DC converter. Then, by the operation of the chopper circuit 7b, from the maximum DC power source V to the maximum single-phase inverter 3B
- Power is supplied to DC power supply V via -INV and single-phase inverter 2B-INV.
- each single-phase inverter 1B-INV, 2B-INV, 3B-INV and chopper circuits 7a, 7b will be described with reference to FIG.
- each single-phase inverter 1B-INV, 2B-INV is output by PWM control so as to compensate for the difference between the target output voltage and the maximum single-phase inverter 3B-INV output voltage.
- the output indicating that the output of the single-phase inverter 1B-INV and the output of the single-phase inverter 2B-INV are equal is not limited to this.
- switching element Q24 is turned on, and switching elements Q22 and Q23 are alternately turned on. During this T period, switching elements Q33 and Q24 are on, so
- the rear tuttle L2 is charged by the current iL2 that flows, and the DC power supply V is supplied by the current iL2x that flows from the rear tuttle L2 through the diode Dz2A.
- the reverse tutor L2 is charged by the current iL2 flowing through the anti-parallel diode and DC power supply V.
- V power is the maximum single-phase inverter 3B-INV and
- DC power supply V can be supplied via single-phase inverter 2B-INV.
- Inverters 1B-INV and 2B-INV output positive voltages by PWM control, switching elements Q14 and Q24 are turned on, and switching elements Q12 and Q13 and switching elements Q22 and Q23 are alternately turned on. .
- switching element Q When 4 is turned on, switching element Q is switched from DC power supply V by turning on / off switch Qs.
- single-phase inverters 1B-INV and 2B-INV control the negative voltage respectively by PWM control.
- the switching elements Ql l and Q21 are turned on, and the switching elements Q12 and Q13 and switching elements Q22 and Q23 are alternately turned on. In this T period,
- switching element Q23 of single-phase inverter 2B-INV is turned on and DC power supply V
- switch Qs of chitsuba circuit 7a is turned on. By turning off the DC power supply V power, the single-phase inverter 2B-INV and single-phase inverter 1B-I
- Power can be supplied to DC power supply V via NV.
- the single-phase inverter 2 connected adjacent to the maximum DC power source V of the maximum single-phase inverter 3B-INV is arranged at the end with the maximum single-phase inverter 3B-INV.
- Single-phase inverters 3B-INV and 2B-IN V connected adjacent to each other in the direction in which the power supply voltage increases.
- three single-phase inverters are used.
- two, four, or more input terminals may be arranged in ascending or descending order of the voltage of each DC power source.
- the bidirectional DCZDC converter 11 shown in Fig. 10 (a) is composed of a transformer and switches Qdl, Qd2, Qd3, and transformer windings l la, l ib connected to the DC power sources V 1, V 2, V 3
- Fig. 10 (b) shows the gate voltages that serve as the drive signals for the switches Qdl, Qd2, and Qd3.
- the gate voltage of switch Qd3 and the gate voltage of switch Qdl are inversely related, and V and V
- the voltage relationship with 3B is determined to be 9: 1 by the value of Td and the transformer turns ratio.
- the voltage relationship between 3B and V is determined to be 3: 1 by the value of the transformer turns ratio alone.
- V can be controlled by changing Td, and V is determined by the transformer turns ratio.
- Both voltages V 1 and V 2 can be set to predetermined values.
- a flyback converter is connected between the maximum DC power supply V and the DC power supply V.
- the voltage of the DC power supply V and v can be set with a small number of elements.
- a bidirectional DCZDC converter 12 shown in FIG. 11 (a) includes a transformer, switches Qdl, Qd2, Qd3, and a reset winding 13. Transformers connected to each DC power supply V, V, V
- windings 12a, 12b, 12c are connected between the maximum DC power source V and each DC power source V, V.
- Figure 11 (b) shows the gate voltage that is the drive signal for each switch Qdl, Qd2, and Qd3.
- each switch Qdl, Qd2, Qd3 has the same relationship, and each direct pressure V, V, V
- IB 2B 3B The relationship of IB 2B 3B is defined as 1: 3: 9 by the value of the transformer turns ratio alone. At this time, V
- IB 3B IB 3B 1B Power is transferred from the flow power supply V to the maximum DC power supply V. If V> 3V,
- V to connect to each other as a forward converter
- the bidirectional DCZDC converter 14 shown in Fig. 12 (a) includes a transformer and switches Qdl, Qd2, and Q d3, and transformer windings 14a and 14b connected to the DC power sources V, V, and V, respectively. , 1
- Figure 12 (b) shows the gate voltage that is the drive signal for each switch Qdl, Qd2, and Qd3.
- the gate voltage of switch Qd3 and the gate voltage of each switch Qdl and Qd2 are inversely related.
- the relationship between the direct pressures V 1, V 2, and V is determined as 1: 3: 9 according to the value of the Td and transformer turns ratio.
- each V and V can be controlled reliably.
- These voltages V and v can also be stably controlled to predetermined values.
- the DCZDC converter 4 configured by the chopper circuits 7a and 7b performs a one-way power supply operation only for supplying the maximum DC power source V power.
- a one-way DCZDC converter 4 The voltage ratio of each V and V is high
- the maximum value (peak value) of the AC voltage V output from the inverter is set to Vm out
- Q and Q are connected to each single-phase inverter 1B-INV, 2B-INV, 3B-INV The amount of charge flowing out from the DC power sources V and v due to discharging and charging. Directly connected to each inverter
- the outflow charge amount (Q + Q), which is the capacity, becomes zero at the voltage utilization rate P ( about 0.83).
- Output pulse 16 is the total output of single-phase inverters IB-INV and 2B-INV, and 17 is the AC output voltage V from the power conditioner.
- the sunlight voltage decreases due to an increase in the outside air temperature, etc.
- the output voltage Vc (V) of the booster chopper circuit 3 of the power conditioner is, for example, about 204V.
- 15a and 15b are the output pulses of the maximum single-phase inverter 3B-INV before and after adjusting the pulse width
- 16a and 16b are the sum of the single-phase inverters 1 B-INV and 2B-INV before and after adjusting the pulse width, respectively. Is the output.
- the voltage of sunlight increases due to a decrease in the outside air temperature or the like, and the output voltage Vc (V) of the booster chopper circuit 3 of the power conditioner is about 260 V, for example.
- 15c and 15d are the output pulses of the maximum single-phase inverter 3B-INV before and after adjusting the pulse width
- 16c and 16d are the sum of the single-phase inverters 1B-IN V and 2B-INV before and after adjusting the pulse width, respectively. Is the output.
- the power load of single-phase inverters 1B-INV and 2B-INV can be easily adjusted by increasing or decreasing the output pulse width of maximum single-phase inverter 3B-INV.
- the single-phase inverters 1B-INV and 2B-INV have the DC voltage necessary to obtain the total output of V and 2B-INV, a predetermined output can be obtained.
- IB 2B can be adjusted to approach 0. For this reason, the power handled by the DC / DC converter 4 can be brought close to 0, and the efficiency is improved.
- Such control can also be applied to the case of the fourth embodiment, and the power handled by the bidirectional DCZDC converters 11, 12, and 14 can be brought close to 0, and the efficiency is improved.
- the efficiency of the step-up chopper circuit 3 is improved as follows.
- the maximum output voltage required for 200V AC output is about 282V, and the output voltage V of the inverter unit 1 can be output up to V + V + V. For this reason V +
- V + V is about 282V or higher, the power conditioner can output 200V AC.
- V + V + V is higher than V, which is the voltage boosted by the boost chopper circuit 3.
- V + V + V is 282V or higher, which is the condition for AC output
- the IGBT switch 3a is turned on and off to (195V) and boosted to the voltage V. If exceeded, the IGBT switch 3a is stopped and the boosting operation of the boosting chopper circuit 3 is stopped. As the solar voltage V increases, the step-up rate decreases and the efficiency of the step-up booster circuit 3 is improved.
- the step-up operation is stopped by stopping the T switch 3a, the loss associated with the step-up can be greatly reduced as described above, and a power conditioner with high conversion efficiency can be obtained.
- the predetermined voltage V for stopping the boosting operation may be about 195 V or more, but a lower voltage and
- FIG. 14 is a schematic configuration diagram showing a power conditioner according to Embodiment 7 of the present invention.
- the power conditioner shown in FIG. 1 of the first embodiment is provided with a bypass circuit 20 that bypasses the step-up chopper circuit 3.
- the boost chopper circuit 3 boosts the DC voltage V obtained by the DC power source 2 to obtain V which is the voltage of the maximum DC power source V. Also, boost boost boost
- a bypass circuit 20 including a relay 20 a is connected in parallel to the booster chopper circuit 3.
- the IGBT switch 3a is connected until the DC voltage (solar voltage) V obtained by the input DC power source 2 reaches the predetermined voltage V (195V).
- the voltage is increased to the voltage V. During this time, the relay 20a of the bypass circuit 20 is opened.
- the relay 20a of the bypass circuit 20 is closed and a current flows to the bypass circuit 20 side to bypass the rear tuttle 3b and the diode 3c of the boosting chopper circuit 3.
- the boosting chiba circuit 3 outputs the output voltage.
- the step-up rate increases as the solar voltage V increases.
- Solar voltage V is a predetermined voltage V If exceeded, the boost operation is stopped, the relay 20a of the bypass circuit 20 is closed, and a current flows to the bin circuit 20 side, so that there is almost no loss. Therefore, the solar voltage V becomes the voltage V
- the efficiency of the pressure booster circuit 3 suddenly increases at O ml.
- the predetermined voltage V for stopping the boosting operation may be about 195V or more, but it is lower.
- a higher voltage can further reduce the loss of the chiyotsuba circuit 3.
- the conduction loss of the rear tuttle 3b and the diode 3c can be eliminated by bypassing the rear tuttle 3b and the diode 3c in the boosting booster circuit 3 that can only reduce the loss by stopping the IGBT switch 3a. Therefore, there is almost no loss in the boosting booster circuit 3. For this reason, a power conditioner with high conversion efficiency is obtained.
- bypass circuit 20 in the seventh embodiment will be described below based on FIGS.
- the no-pass circuit 20 is constituted by a relay 20a, and bypasses one or both of the rear-tuttle 3b and the diode 3c connected in series in the boosting chiba circuit 3 or both.
- FIG. 15 shows the bypass circuit 20 that bypasses the rear tuttle 3b and the diode 3c with the relay 20a as shown in FIG. 14 of the seventh embodiment.
- Figure 16 shows an alternative bypass circuit 20 that bypasses only diode 3c with relay 20a.
- FIG. 17 shows a bypass circuit 20 according to a second alternative example, in which only the rear tuttle 3b is bypassed by the relay 20a.
- a self-extinguishing semiconductor switch 20b is connected in parallel to the relay 20a. Since the relay 20a is generally opened at zero current or opened at a low voltage, it is difficult to cut off DC current. Thus, the semiconductor switch 20b can be easily cut off in parallel. In this case, the semiconductor switch 20b is turned on at the same time as the relay 20a is opened, and the current is transferred to the semiconductor switch 20b. As a result, the current flowing through the relay 20a is cut off, and then the semiconductor switch 20b is turned off.
- the IGBT switch 3a is turned on.
- the DC power source V is the solar voltage to bypass the diode 3c.
- the relay 20a May cause damage to the panel. For this reason, the current flowing through the relay 20a is detected, and when the current falls below a certain value, the relay 20a is opened and switched to a current path via the rear tuttle 3b and the diode 3c. Thus, by opening the relay 20a and enabling the function of the diode 3c, it is possible to provide a reverse current prevention function and a solar panel reverse voltage protection function.
- the relay 20a When the relay 20a is opened, even if a reverse current has already occurred due to a detection delay or the like, it can be reliably cut off by transferring the current to the semiconductor switch 20b.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007504706A JP4527768B2 (ja) | 2005-02-25 | 2006-02-21 | 電力変換装置 |
US11/816,324 US7596008B2 (en) | 2005-02-25 | 2006-02-21 | Power conversion apparatus |
EP20060714141 EP1852964B1 (en) | 2005-02-25 | 2006-02-21 | Power conversion apparatus |
CN2006800060538A CN101128973B (zh) | 2005-02-25 | 2006-02-21 | 电力转换装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005050700 | 2005-02-25 | ||
JP2005-050700 | 2005-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006090675A1 true WO2006090675A1 (ja) | 2006-08-31 |
Family
ID=36927315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/303001 WO2006090675A1 (ja) | 2005-02-25 | 2006-02-21 | 電力変換装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7596008B2 (ja) |
EP (1) | EP1852964B1 (ja) |
JP (1) | JP4527768B2 (ja) |
CN (1) | CN101128973B (ja) |
WO (1) | WO2006090675A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009165222A (ja) * | 2007-12-28 | 2009-07-23 | Mitsubishi Electric Corp | 電力変換装置 |
US7719140B2 (en) | 2007-10-15 | 2010-05-18 | Ampt, Llc | Systems for boundary controlled solar power conversion |
JP2011135646A (ja) * | 2009-12-22 | 2011-07-07 | Yaskawa Electric Corp | 電力変換装置 |
JP2017524323A (ja) * | 2014-07-15 | 2017-08-24 | ▲陽▼光▲電▼源股▲分▼有限公司Sungrow Power Supply Co., Ltd. | シングルステージ太陽光発電グリッドタイインバータ及びその制御方法、応用 |
Families Citing this family (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006090672A1 (ja) * | 2005-02-25 | 2006-08-31 | Mitsubishi Denki Kabushiki Kaisha | 電力変換装置 |
US10693415B2 (en) | 2007-12-05 | 2020-06-23 | Solaredge Technologies Ltd. | Testing of a photovoltaic panel |
US11881814B2 (en) | 2005-12-05 | 2024-01-23 | Solaredge Technologies Ltd. | Testing of a photovoltaic panel |
US8013472B2 (en) | 2006-12-06 | 2011-09-06 | Solaredge, Ltd. | Method for distributed power harvesting using DC power sources |
US8384243B2 (en) | 2007-12-04 | 2013-02-26 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US11296650B2 (en) | 2006-12-06 | 2022-04-05 | Solaredge Technologies Ltd. | System and method for protection during inverter shutdown in distributed power installations |
US11309832B2 (en) | 2006-12-06 | 2022-04-19 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US8319483B2 (en) | 2007-08-06 | 2012-11-27 | Solaredge Technologies Ltd. | Digital average input current control in power converter |
US9088178B2 (en) | 2006-12-06 | 2015-07-21 | Solaredge Technologies Ltd | Distributed power harvesting systems using DC power sources |
US8947194B2 (en) | 2009-05-26 | 2015-02-03 | Solaredge Technologies Ltd. | Theft detection and prevention in a power generation system |
US8473250B2 (en) | 2006-12-06 | 2013-06-25 | Solaredge, Ltd. | Monitoring of distributed power harvesting systems using DC power sources |
WO2009073868A1 (en) | 2007-12-05 | 2009-06-11 | Solaredge, Ltd. | Safety mechanisms, wake up and shutdown methods in distributed power installations |
US8963369B2 (en) | 2007-12-04 | 2015-02-24 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US8618692B2 (en) | 2007-12-04 | 2013-12-31 | Solaredge Technologies Ltd. | Distributed power system using direct current power sources |
US11735910B2 (en) | 2006-12-06 | 2023-08-22 | Solaredge Technologies Ltd. | Distributed power system using direct current power sources |
US8319471B2 (en) | 2006-12-06 | 2012-11-27 | Solaredge, Ltd. | Battery power delivery module |
US9112379B2 (en) | 2006-12-06 | 2015-08-18 | Solaredge Technologies Ltd. | Pairing of components in a direct current distributed power generation system |
US9130401B2 (en) | 2006-12-06 | 2015-09-08 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US11855231B2 (en) | 2006-12-06 | 2023-12-26 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US11888387B2 (en) | 2006-12-06 | 2024-01-30 | Solaredge Technologies Ltd. | Safety mechanisms, wake up and shutdown methods in distributed power installations |
US11687112B2 (en) | 2006-12-06 | 2023-06-27 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US8816535B2 (en) | 2007-10-10 | 2014-08-26 | Solaredge Technologies, Ltd. | System and method for protection during inverter shutdown in distributed power installations |
US11728768B2 (en) | 2006-12-06 | 2023-08-15 | Solaredge Technologies Ltd. | Pairing of components in a direct current distributed power generation system |
US11569659B2 (en) | 2006-12-06 | 2023-01-31 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
JP5049637B2 (ja) * | 2007-04-12 | 2012-10-17 | 三菱電機株式会社 | Dc/dc電力変換装置 |
WO2009055474A1 (en) | 2007-10-23 | 2009-04-30 | And, Llc | High reliability power systems and solar power converters |
US11264947B2 (en) | 2007-12-05 | 2022-03-01 | Solaredge Technologies Ltd. | Testing of a photovoltaic panel |
WO2009073867A1 (en) | 2007-12-05 | 2009-06-11 | Solaredge, Ltd. | Parallel connected inverters |
US8049523B2 (en) | 2007-12-05 | 2011-11-01 | Solaredge Technologies Ltd. | Current sensing on a MOSFET |
US7960950B2 (en) | 2008-03-24 | 2011-06-14 | Solaredge Technologies Ltd. | Zero current switching |
WO2009132158A1 (en) * | 2008-04-22 | 2009-10-29 | Array Converter, Inc. | High voltage array converter |
US9000617B2 (en) | 2008-05-05 | 2015-04-07 | Solaredge Technologies, Ltd. | Direct current power combiner |
JP4911733B2 (ja) * | 2009-03-13 | 2012-04-04 | オムロン株式会社 | 電力変換装置、パワーコンディショナ、および発電システム |
JP4888817B2 (ja) * | 2009-03-13 | 2012-02-29 | オムロン株式会社 | パワーコンディショナおよび太陽光発電システム |
US9442504B2 (en) | 2009-04-17 | 2016-09-13 | Ampt, Llc | Methods and apparatus for adaptive operation of solar power systems |
CN102460932B (zh) | 2009-06-19 | 2014-12-10 | 三菱电机株式会社 | 电力变换装置 |
WO2011024374A1 (ja) | 2009-08-24 | 2011-03-03 | 三菱電機株式会社 | 太陽光発電用パワーコンディショナ |
US8482156B2 (en) * | 2009-09-09 | 2013-07-09 | Array Power, Inc. | Three phase power generation from a plurality of direct current sources |
DE112010003664T5 (de) * | 2009-09-16 | 2012-08-02 | Mitsubishi Electric Corporation | Leistungsumwandlungsvorrichtung |
US9466737B2 (en) | 2009-10-19 | 2016-10-11 | Ampt, Llc | Solar panel string converter topology |
US7990743B2 (en) * | 2009-10-20 | 2011-08-02 | General Electric Company | System and method for decreasing solar collector system losses |
US7855906B2 (en) * | 2009-10-26 | 2010-12-21 | General Electric Company | DC bus voltage control for two stage solar converter |
KR101084214B1 (ko) * | 2009-12-03 | 2011-11-18 | 삼성에스디아이 주식회사 | 계통 연계형 전력 저장 시스템 및 전력 저장 시스템 제어 방법 |
CN102118043B (zh) * | 2009-12-31 | 2013-12-04 | 比亚迪股份有限公司 | 用于对动力电池充电的太阳能充电器 |
US8050062B2 (en) | 2010-02-24 | 2011-11-01 | General Electric Company | Method and system to allow for high DC source voltage with lower DC link voltage in a two stage power converter |
JP5071498B2 (ja) * | 2010-03-10 | 2012-11-14 | オムロン株式会社 | 電力変換装置およびパワーコンディショナ |
US8243446B2 (en) * | 2010-03-11 | 2012-08-14 | First Solar, Inc. | Photovoltaic inverter |
US8374009B2 (en) * | 2010-03-25 | 2013-02-12 | Hamilton Sundstrand Corporation | Multi-level parallel phase converter |
US8374011B2 (en) * | 2010-08-20 | 2013-02-12 | Magnetek, Inc. | Method and apparatus for boosting DC bus voltage |
US10230310B2 (en) | 2016-04-05 | 2019-03-12 | Solaredge Technologies Ltd | Safety switch for photovoltaic systems |
GB2485527B (en) | 2010-11-09 | 2012-12-19 | Solaredge Technologies Ltd | Arc detection and prevention in a power generation system |
US10673229B2 (en) | 2010-11-09 | 2020-06-02 | Solaredge Technologies Ltd. | Arc detection and prevention in a power generation system |
US10673222B2 (en) | 2010-11-09 | 2020-06-02 | Solaredge Technologies Ltd. | Arc detection and prevention in a power generation system |
US9118213B2 (en) | 2010-11-24 | 2015-08-25 | Kohler Co. | Portal for harvesting energy from distributed electrical power sources |
GB2486408A (en) | 2010-12-09 | 2012-06-20 | Solaredge Technologies Ltd | Disconnection of a string carrying direct current |
GB2496140B (en) | 2011-11-01 | 2016-05-04 | Solarcity Corp | Photovoltaic power conditioning units |
GB2483317B (en) * | 2011-01-12 | 2012-08-22 | Solaredge Technologies Ltd | Serially connected inverters |
US8952672B2 (en) | 2011-01-17 | 2015-02-10 | Kent Kernahan | Idealized solar panel |
US8570005B2 (en) | 2011-09-12 | 2013-10-29 | Solaredge Technologies Ltd. | Direct current link circuit |
US9112430B2 (en) | 2011-11-03 | 2015-08-18 | Firelake Acquisition Corp. | Direct current to alternating current conversion utilizing intermediate phase modulation |
CN102412748B (zh) * | 2011-11-16 | 2013-12-18 | 燕山大学 | 一种光伏并网逆变器及其控制方法 |
US9143056B2 (en) | 2011-12-16 | 2015-09-22 | Empower Micro Systems, Inc. | Stacked voltage source inverter with separate DC sources |
US9099938B2 (en) * | 2011-12-16 | 2015-08-04 | Empower Micro Systems | Bi-directional energy converter with multiple DC sources |
GB2498365A (en) | 2012-01-11 | 2013-07-17 | Solaredge Technologies Ltd | Photovoltaic module |
US9853565B2 (en) | 2012-01-30 | 2017-12-26 | Solaredge Technologies Ltd. | Maximized power in a photovoltaic distributed power system |
GB2498790A (en) | 2012-01-30 | 2013-07-31 | Solaredge Technologies Ltd | Maximising power in a photovoltaic distributed power system |
GB2498791A (en) | 2012-01-30 | 2013-07-31 | Solaredge Technologies Ltd | Photovoltaic panel circuitry |
GB2499991A (en) | 2012-03-05 | 2013-09-11 | Solaredge Technologies Ltd | DC link circuit for photovoltaic array |
CN102624427B (zh) * | 2012-03-05 | 2013-12-11 | 浙江大学 | 一种能量与信息的同步传输系统 |
US8885373B1 (en) * | 2012-03-07 | 2014-11-11 | Power-One Italy S.pA. | Earth leakage current control for a multi-level grounded inverter |
US10115841B2 (en) | 2012-06-04 | 2018-10-30 | Solaredge Technologies Ltd. | Integrated photovoltaic panel circuitry |
US9548619B2 (en) | 2013-03-14 | 2017-01-17 | Solaredge Technologies Ltd. | Method and apparatus for storing and depleting energy |
EP3506370B1 (en) | 2013-03-15 | 2023-12-20 | Solaredge Technologies Ltd. | Bypass mechanism |
US9397497B2 (en) | 2013-03-15 | 2016-07-19 | Ampt, Llc | High efficiency interleaved solar power supply system |
CN104348358B (zh) * | 2013-08-07 | 2017-12-05 | 中纺机电研究所 | 功率电源转换方法及装置 |
WO2016015329A1 (zh) * | 2014-08-01 | 2016-02-04 | 冷再兴 | 一种dc-ac双向功率变换器拓扑结构 |
CN105071658B (zh) * | 2014-12-26 | 2017-12-26 | 中国船舶重工集团公司第七一九研究所 | 减小双向正激变换器开关管电压尖峰和环流的控制方法 |
US9762143B2 (en) * | 2015-04-29 | 2017-09-12 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Devices and methods for controlling current in inverters |
FR3038796B1 (fr) | 2015-07-09 | 2017-08-11 | Moteurs Leroy-Somer | Systeme de generation d'energie a traitement ameliore des impacts a charge, des delestages et des harmoniques |
CN117130027A (zh) | 2016-03-03 | 2023-11-28 | 太阳能安吉科技有限公司 | 用于映射发电设施的方法 |
US11081608B2 (en) | 2016-03-03 | 2021-08-03 | Solaredge Technologies Ltd. | Apparatus and method for determining an order of power devices in power generation systems |
US10599113B2 (en) | 2016-03-03 | 2020-03-24 | Solaredge Technologies Ltd. | Apparatus and method for determining an order of power devices in power generation systems |
US11177663B2 (en) | 2016-04-05 | 2021-11-16 | Solaredge Technologies Ltd. | Chain of power devices |
US11018623B2 (en) | 2016-04-05 | 2021-05-25 | Solaredge Technologies Ltd. | Safety switch for photovoltaic systems |
EP3484040A1 (en) | 2017-11-09 | 2019-05-15 | CE+T Power Luxembourg SA | Inverter with ac forward bridge and improved dc/dc topology |
CN109921671B (zh) * | 2019-03-20 | 2020-09-04 | 中车青岛四方车辆研究所有限公司 | 单相逆变器并联控制方法、控制系统及逆变器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000243636A (ja) * | 1999-02-24 | 2000-09-08 | Toshiba Corp | 三相マルチレベルインバータ用変圧器 |
JP2003324990A (ja) * | 2002-04-30 | 2003-11-14 | Toshiba Corp | 可変速駆動装置 |
JP2005039931A (ja) * | 2003-07-14 | 2005-02-10 | Toshiba Consumer Marketing Corp | 系統連系インバータ装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4052657A (en) * | 1976-04-22 | 1977-10-04 | Rockwell International Corporation | Distribution system for a. c. electrical energy derived from d. c. energy sources |
DE19635606A1 (de) * | 1996-09-02 | 1998-03-05 | Werner Prof Dr Ing Kleinkauf | Vorrichtung zur Erzeugung einer höheren Wechselspannung aus mehreren niedrigeren Gleichspannungen und dafür geeigneter Bausatz |
US6031746A (en) * | 1998-09-04 | 2000-02-29 | General Electric Company | Switching amplifier for generating continuous arbitrary waveforms for magnetic resonance imaging coils |
US6317347B1 (en) * | 2000-10-06 | 2001-11-13 | Philips Electronics North America Corporation | Voltage feed push-pull resonant inverter for LCD backlighting |
US6556461B1 (en) * | 2001-11-19 | 2003-04-29 | Power Paragon, Inc. | Step switched PWM sine generator |
JP2005086918A (ja) * | 2003-09-09 | 2005-03-31 | Fanuc Ltd | モータ駆動装置 |
US7230837B1 (en) * | 2006-03-27 | 2007-06-12 | North Carolina State University | Method and circuit for cascaded pulse width modulation |
-
2006
- 2006-02-21 JP JP2007504706A patent/JP4527768B2/ja not_active Expired - Fee Related
- 2006-02-21 CN CN2006800060538A patent/CN101128973B/zh not_active Expired - Fee Related
- 2006-02-21 WO PCT/JP2006/303001 patent/WO2006090675A1/ja active Application Filing
- 2006-02-21 US US11/816,324 patent/US7596008B2/en not_active Expired - Fee Related
- 2006-02-21 EP EP20060714141 patent/EP1852964B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000243636A (ja) * | 1999-02-24 | 2000-09-08 | Toshiba Corp | 三相マルチレベルインバータ用変圧器 |
JP2003324990A (ja) * | 2002-04-30 | 2003-11-14 | Toshiba Corp | 可変速駆動装置 |
JP2005039931A (ja) * | 2003-07-14 | 2005-02-10 | Toshiba Consumer Marketing Corp | 系統連系インバータ装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8093756B2 (en) | 2007-02-15 | 2012-01-10 | Ampt, Llc | AC power systems for renewable electrical energy |
US7719140B2 (en) | 2007-10-15 | 2010-05-18 | Ampt, Llc | Systems for boundary controlled solar power conversion |
US7843085B2 (en) | 2007-10-15 | 2010-11-30 | Ampt, Llc | Systems for highly efficient solar power |
US8004116B2 (en) | 2007-10-15 | 2011-08-23 | Ampt, Llc | Highly efficient solar power systems |
US8242634B2 (en) | 2007-10-15 | 2012-08-14 | Ampt, Llc | High efficiency remotely controllable solar energy system |
US8304932B2 (en) | 2007-10-15 | 2012-11-06 | Ampt, Llc | Efficient solar energy power creation systems |
US8482153B2 (en) | 2007-10-15 | 2013-07-09 | Ampt, Llc | Systems for optimized solar power inversion |
US9438037B2 (en) | 2007-10-15 | 2016-09-06 | Ampt, Llc | Systems for optimized solar power inversion |
JP2009165222A (ja) * | 2007-12-28 | 2009-07-23 | Mitsubishi Electric Corp | 電力変換装置 |
JP2011135646A (ja) * | 2009-12-22 | 2011-07-07 | Yaskawa Electric Corp | 電力変換装置 |
JP2017524323A (ja) * | 2014-07-15 | 2017-08-24 | ▲陽▼光▲電▼源股▲分▼有限公司Sungrow Power Supply Co., Ltd. | シングルステージ太陽光発電グリッドタイインバータ及びその制御方法、応用 |
Also Published As
Publication number | Publication date |
---|---|
EP1852964A1 (en) | 2007-11-07 |
JPWO2006090675A1 (ja) | 2008-07-24 |
US7596008B2 (en) | 2009-09-29 |
EP1852964A4 (en) | 2011-03-09 |
CN101128973B (zh) | 2010-05-19 |
EP1852964B1 (en) | 2012-01-18 |
CN101128973A (zh) | 2008-02-20 |
US20080101101A1 (en) | 2008-05-01 |
JP4527768B2 (ja) | 2010-08-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006090675A1 (ja) | 電力変換装置 | |
US7602626B2 (en) | Power conversion apparatus | |
US7719865B2 (en) | Power conversion apparatus | |
US10749435B2 (en) | DC/DC converter and control thereof | |
US20120176090A1 (en) | Bi-directional inverter-charger | |
WO2016064872A1 (en) | Multi-mode energy router | |
JP2007166783A (ja) | 電力変換装置 | |
JP2011200096A (ja) | 蓄電システム | |
US10263520B2 (en) | DC-DC power converters with step-up and/or step-down mode(s) | |
JP5132797B2 (ja) | 電力変換装置 | |
JP2010532148A (ja) | 電気エネルギーを送電網に供給するための装置 | |
Bhule et al. | Power management control strategy for PV-Battery standalone system | |
JP2008099464A (ja) | 電力変換装置 | |
JP5362657B2 (ja) | 電力変換装置 | |
JP5734083B2 (ja) | 電力変換装置 | |
JP3980794B2 (ja) | 電力貯蔵システム | |
JP2011193704A (ja) | 直流−交流電力変換装置 | |
Jean-Pierre et al. | An optimized start-up scheme for isolated cascaded AC/DC power converters | |
CN112311221A (zh) | 功率转换器和用于操作功率转换器的方法 | |
JP3122265B2 (ja) | インバータ装置 | |
US11876458B2 (en) | Hybrid charger and inverter system | |
WO2011128941A1 (ja) | 電力変換装置 | |
KR101083819B1 (ko) | Eco mode를 적용한 역률보상 무변압기형 고효율 충전기 인버터 장치 | |
WO2023048775A1 (en) | Hybrid charger and inverter system | |
JPH04197047A (ja) | 無停電電源装置の制御方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2007504706 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11816324 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006714141 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680006053.8 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2006714141 Country of ref document: EP |