JP2001005543A - Direct-current power output device and solar power generation system - Google Patents

Direct-current power output device and solar power generation system

Info

Publication number
JP2001005543A
JP2001005543A JP11171107A JP17110799A JP2001005543A JP 2001005543 A JP2001005543 A JP 2001005543A JP 11171107 A JP11171107 A JP 11171107A JP 17110799 A JP17110799 A JP 17110799A JP 2001005543 A JP2001005543 A JP 2001005543A
Authority
JP
Japan
Prior art keywords
power
output
charging
discharging
charge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11171107A
Other languages
Japanese (ja)
Other versions
JP4353446B2 (en
Inventor
Takeshi Hirano
Akio Kitamura
Hiromasa Kubo
Takehiko Matsuoka
裕政 久保
章夫 北村
剛 平野
武彦 松岡
Original Assignee
Daihen Corp
Kansai Electric Power Co Inc:The
株式会社ダイヘン
関西電力株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daihen Corp, Kansai Electric Power Co Inc:The, 株式会社ダイヘン, 関西電力株式会社 filed Critical Daihen Corp
Priority to JP17110799A priority Critical patent/JP4353446B2/en
Publication of JP2001005543A publication Critical patent/JP2001005543A/en
Application granted granted Critical
Publication of JP4353446B2 publication Critical patent/JP4353446B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

(57) [Summary] [PROBLEMS] To suppress fluctuations in reverse power flow power to a system by absorbing fluctuations in power generated by a DC power source due to fluctuations in solar radiation and the like. A charge / discharge operation of a charging / discharging element for charging an output of a DC power source such as a solar cell and discharging the charged DC power to the output is switched between an output of the DC power source and an output of the DC power source. This is performed by the control means 5 based on the comparison with the target value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC power output device for outputting an output of a DC power source such as a solar cell to an inverter or the like, and a photovoltaic power generation system provided with the DC power output device.

[0002]

2. Description of the Related Art A grid-connected solar power generation system is provided with a solar cell, a DC current collecting box, a grid-connected inverter, and a grid-connected protection device. The power is converted into DC electric energy by a solar cell, and the DC power is collected by a DC current collection box. Then, the power is converted into AC power by a grid-connected inverter and flows backward to the system.

[0003]

In the grid-connected solar power generation system having such a configuration, fluctuations in the power generated by the solar cell (DC) due to fluctuations in the solar radiation are output fluctuations of the photovoltaic power generation system. Therefore, there is a problem that the reverse power flow power to the grid to be interconnected is fluctuated, and therefore the grid voltage may fluctuate rapidly.

Further, when a solar power generation system is installed and installed on a large scale, a large power fluctuation occurs in the system when solar radiation fluctuation occurs in a wide area, so that not only the system voltage but also the system voltage is increased. Fluctuations in the frequency of the voltage,
There were concerns about the occurrence of a number of problems, such as an increase in the number of power generation facilities.

Further, when a system for increasing the local self-sufficiency of electric power is constructed by using a solar power generation system, a wind power generation system, a fuel cell system, an electric power storage system, etc. There is a problem that the power storage system having a high control speed must compensate for the rapid output power fluctuation of the system, and the load on the power storage system increases.

Accordingly, an object of the present invention is to suppress fluctuations in reverse power flow to the system by absorbing fluctuations in power generated by a DC power source due to fluctuations in solar radiation and the like.

[0007]

The present invention achieves the above-mentioned object by the following means.

According to a first aspect of the present invention, there is provided a DC power source, charging / discharging means for charging an output of the DC power source and discharging the charged DC power to the output, Control means for controlling the operation of the discharging means, wherein the control means controls switching between charging / discharging of the charging / discharging means based on a comparison between an output of the DC power source and a target value thereof. This has the following effects. That is, since the control means switches the charging / discharging operation of the charging / discharging means by comparing with the target value, it is possible to make the output of the DC current source after the charging / discharging operation by the charging / discharging means follow the target value. And the value is smooth and relatively stable.

According to a second aspect of the present invention, there is provided the DC power output apparatus according to the first aspect, wherein the control means includes:
When the output of the DC power source is larger than the target value,
The charging / discharging unit is charged, and when the output of the DC power source is smaller than the target value, the charging / discharging unit is discharged. Has an action. That is, the charging operation is performed when the output of the DC power source is larger than the target value, and the discharging operation is performed when the output of the DC power source is smaller than the target value. The output of the current source can reliably follow the target value, and the value becomes smoother and more stable.

The invention according to claim 3 of the present invention is the DC power output device according to claim 1 or 2, wherein the target value is a moving average of the output of the DC power source. This has the following effects. That is, since the target value is a moving average, the target value is not fixed but set in a state following the current value of the output of the DC power source to some extent. Therefore, even if the state in which the output of the DC power source is relatively small continues to some extent, the target value is set following the output at that time, and the charging / discharging means does not overdischarge. . Similarly, even if the state where the output of the DC power source is relatively large continues to some extent, the target value will be set according to the output at that time, so that the charging / discharging means will not be overcharged. Absent.

According to a fourth aspect of the present invention, there is provided the DC power output device according to any one of the first to third aspects, wherein the DC power source is a solar cell. This has the following effects. That is, the output of the solar cell is characterized by being easily changed by the amount of solar radiation. Therefore, if the present invention is applied to a DC power output device having such a DC power source, the effects of claims 1 to 3 described above become remarkable.

According to a fifth aspect of the present invention, there is provided a solar power generation system comprising the DC power output device according to the fourth aspect and an inverter for converting a DC output of the DC power output device into an AC power. The configuration is characterized by having the following effects. That is, in the photovoltaic power generation system, the fluctuation of the DC output of the solar cell may be the fluctuation of the output of the photovoltaic power generation system, causing the reverse power flow power to the interconnected system to fluctuate and the system voltage to fluctuate rapidly. . Therefore, if the present invention is applied to a photovoltaic power generation system having such features, the effects of claims 1 to 3 described above become remarkable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a photovoltaic power generation system incorporating a DC power output device according to an embodiment of the present invention. This solar power generation system includes a solar cell 1,
It includes a DC current collecting box 2, a system interconnection inverter 3, a system interconnection protection relay 4, a charge / discharge control unit 5, and a charge / discharge element 6. The inverter 3 shown in FIG. 1 includes an inverter circuit 31, a control circuit (not shown), an inverter drive circuit, and the like.

The solar cells 1 are composed of a large number of series-parallel combinations and are usually installed outdoors where sunlight can be received. The DC collecting box 2 integrates the outputs of the solar cells 1 into one using diodes. The system interconnection inverter 3 converts the output of the solar cell 1 collected by the DC current collection box 2 into an AC voltage having the same magnitude and the same phase as the system voltage to be interconnected, and then interconnects the power system 7. The reverse tide is flowing. The grid-connected inverter 3 controls the output voltage of the solar cell 1 by maximum power point tracking control (hereinafter referred to as MPPT control) so that the output power of the solar cell 1 is maximized. The system interconnection protection relay 4 is connected to the system interconnection type inverter 3 only when an abnormality of the power system 7 is detected.
And the power system 7 are disconnected. The abnormality of the power system 7 refers to excessive voltage, insufficient voltage, increase in frequency, decrease in frequency, power failure, and the like of the power system 7.

The charging / discharging element 6 is composed of an element capable of storing and discharging electric energy such as an electric double layer capacitor and a lead storage battery, and connects the DC current collecting box 2 to the grid-connected inverter 3. The wiring 8 is connected to a middle point 8 a of the wiring 8 via a branch wiring 9. This charge / discharge element 6
Is obtained by taking in a part of the output of the DC collecting box 2 from the intermediate point 8a via the branch wiring 9 and charging the battery, and charging the charged DC charging power from the branch wiring 9 through the intermediate point 8a. 2 (the output of the solar cell 1) and supplies it to the grid-connected inverter 3.

The charge / discharge control unit 5 is provided in the middle of the branch wiring 9 and controls the charge / discharge of the charge / discharge element 6. Specifically, the charge / discharge control unit 5 includes a charge / discharge switching unit 51 including a DC / DC converter and the like, and a charge / discharge switching unit 52.
And a switching command section 5b for performing the switching of the operation described above. The switching command unit 5b is provided for the DC current collecting box 2 supplied from the power sensor 10 (specifically, a voltage sensor and a current sensor) provided between the intermediate point 8a and the output end 2a of the DC current collecting box 2. The switching between the charging operation and the discharging operation is determined based on the output power information (output power information of the solar cell 1), and the charging / discharging switching unit 51 is switched based on the determination. Note that the switching command section 52 can be configured by an analog circuit, but can also be configured by software on a CPU.

In this embodiment, the solar cell 1 constitutes a DC power source, the charge / discharge element 6 constitutes charge / discharge means, and the charge / discharge control unit 5 constitutes control means. The solar cell 1, the DC current collecting box 2, the charge / discharge element 6, and the charge / discharge control unit 5 constitute a DC power output device.

Hereinafter, the operation of the solar power generation system will be described with reference to the graph of FIG. FIG. 2 shows the power sensor 1
0 shows a change with time of the output power of the solar cell 1 measured with 0.

The DC power generated by the solar cell 1 is output to the grid-connected inverter 3 via the DC current collecting box 2. At this time, the output power of the solar cell 1 (specifically, the output power of the DC current collection box 2) input to the grid-connected inverter 3 is detected by the power sensor 10 and the switching command of the charge / discharge control unit 5 is issued. It is always input to the unit 52. In FIG.
The change over time of the solar cell output power input to the switching command unit 52 is indicated by a symbol α. The switching command unit 52 calculates a moving average of the input solar cell output power in arbitrary time units and calculates the moving average. In FIG. 2, the change over time of the moving average is indicated by a symbol β.

Then, the switching command section 52 compares the input solar cell output power α with the calculated moving average β, and if the solar cell output power α exceeds the moving average β (α
> Β: region (a) in FIG. 2), the start of charging of the charge / discharge element 6 is determined. On the other hand, when the solar cell output α is lower than the moving average β (α <β: the region shown in FIG.
Is determined to start discharging. The charge / discharge switching unit 51 switches the charge / discharge operation of the charge / discharge element 6 based on the determination of the switching command unit 52.

Thus, when the solar cell output power (DC collector box output power) α exceeds the moving average β (α> β: the area of A in FIG. 2), the charge / discharge element 6 The charging is executed until α decreases to the moving average β. Conversely, solar cell output power (DC collector box output power)
When α is less than the moving average β (α <β: region b in FIG. 2), the charge / discharge element 6 performs the discharge until the solar cell output power 1 increases to the moving average.

Therefore, the input terminal 3a of the inverter circuit 31 of the system interconnection inverter 3 is controlled to increase or decrease by the charging / discharging operation of the charging / discharging element 6, thereby absorbing a sudden change in power and leveling. The output power approximated to the average β is input.

Therefore, in this grid-connected photovoltaic power generation system, a change in the output power of the solar cell due to a change in the solar radiation directly causes a change in the output of the inverter, and a reverse power flow to the power system 7 connected to the system. The power no longer fluctuates. As a result, it is possible to prevent a sudden change in the system voltage caused by a change in reverse power flow power.

Furthermore, when this solar power generation system is installed and installed on a large scale, even if solar radiation fluctuations occur in a wide area, large power fluctuations do not occur in the power system 7, and It is possible to prevent not only the voltage but also the frequency of the system voltage from fluctuating and the load on the power generation equipment from increasing.

In this solar power generation system, the following configuration enables the maximum power point tracking control (MPPT control) performed by the grid-connected inverter 3 to be performed without any problem. That is, the measurement of the output power of the solar cell 1 required as control information in the maximum power point tracking control (MPPT control) is performed by using the input / output point (charge / discharge input / output point) 8 a of the charge / discharge element 6 on the wiring 8. It may be performed on the side (DC collector box side). Then, there is no problem in performing the maximum power point tracking control (MPPT control). For example, the power sensor 10 used in the charge / discharge switching control may be used also as the power measuring means required in the maximum power point tracking control (MPPT control). In this case, there is an effect that the number of power sensors can be reduced.

Further, as another embodiment, as shown in FIG. 3, a charge / discharge control unit 5 and a charge / discharge element 6 may be built in the system interconnection type inverter 3. By incorporating the charge / discharge control unit 5 and the charge / discharge element 6 inside the grid-connected inverter, it is possible to reduce the size and cost of the entire apparatus.

Further, as shown in FIG. 4, a DC collector box 2, a system interconnection protection relay 4, a charge / discharge control unit 5, and a charge / discharge element 6 may be built in the system interconnection type inverter 3. By incorporating these devices inside the system interconnection inverter, it is possible to reduce the size and cost of the entire device.

Also, as shown in FIG. 5, the charging / discharging control unit is provided at the intermediate point 3b between the power sensor 10 inside the inverter and the input terminal 3a of the inverter circuit 31 for the already installed grid-connected inverter 3. By connecting the charging / discharging element 5 to the charging / discharging element 6, it is possible to suppress output fluctuations due to solar radiation without performing complicated remodeling. In this case, maximum power point tracking control (MPPT control) performed by the grid-connected inverter 3
Needs to measure the output power of the solar cell 1 required as control information on the solar cell side from the point where the charge / discharge control unit 5 is connected.

In the above-described embodiment, the moving average is used as the target value of the output power of the solar cell. Alternatively, the absolute average value from the control start point to the present may be used as the target value. Further, the target value may be set from the average value of the past solar radiation amounts in a predetermined period (season, month, week, etc.). Further, the target value may be set based on the weather forecast or the like of the day. As the target value of the output power of the solar cell, the near future value of the output power of the solar cell is predicted from the change in the output power of the solar cell at the present time, and the moving average value is calculated using an arbitrary time unit using the value. A method of calculating and using it as a target value may be used. As a result, the time delay that occurs when the moving average of the output power of the solar cell is obtained can be eliminated, and the storage capacity of the charge / discharge element 6 can be reduced. Thus, the target value can be set variously.

Further, in the above-described embodiment, the present invention is implemented in a photovoltaic power generation system. In addition, in a system including various DC power output devices such as a wind power generation system and a wave power generation system. Can be implemented. Furthermore, the present invention can be implemented when a system that enhances the local self-sufficiency of electric power is constructed by using a solar power generation system, a wind power generation system, a fuel cell system, an electric power storage system, and the like. In this case, since there is no sudden change in the output power of the solar power generation system or the wind power generation system, it is not necessary for the power storage system or the like having a fast control speed to compensate for the output fluctuation, and the burden on the power storage system is reduced. It is reduced.

[0032]

As described above, according to the present invention, it becomes possible to make the output of the DC current source follow the target value after the charge / discharge operation by the charge / discharge means, and the value becomes stable. It will be. Therefore, the disadvantage that the output fluctuation of the DC power source affects the supply destination of the output power is eliminated. In particular, when the present invention is applied to a photovoltaic power generation system or the like, there is a disadvantage that the output of the photovoltaic power generation system fluctuates and the reverse power flow power to the interconnected system fluctuates, thereby rapidly changing the system voltage. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a solar power generation system according to one embodiment of the present invention.

FIG. 2 is a diagram provided for describing control of output power of a solar cell in the solar power generation system according to the embodiment.

FIG. 3 is a diagram showing a configuration of a solar power generation system according to another embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a photovoltaic power generation system according to still another embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a photovoltaic power generation system according to still another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Solar cell 2 DC collection box 3 Grid connection type inverter 4 Grid connection protection relay 5 Charge / discharge control part 51 Charge / discharge switching part 52 Switching command part 6 Charge / discharge element 7 Power system 10 Power sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Kitamura 3-3-22 Nakanoshima, Kita-ku, Osaka-shi, Osaka Inside Kansai Electric Power Company (72) Inventor Tsuyoshi Hirano 2-1-1 Tagawa, Yodogawa-ku, Osaka-shi, Osaka No. 11 Daihen Co., Ltd. (72) Inventor Hiromasa Kubo 2-1-1 Tagawa, Yodogawa-ku, Osaka-shi, Osaka F-term Co., Ltd. F-term (reference) 5G003 AA06 BA01 CB05 CC02 DA07 GB06 5G066 HA30 HB06 HB09 5H007 AA06 AA17 BB07 CC09 CC12 DB01 DC03 FA14 FA19 5H420 BB03 BB12 CC03 CC06 DD03 EA37 EB39 LL02 LL03 LL06

Claims (5)

[Claims]
1. A DC power source, charging / discharging means for charging an output of the DC power source and discharging the charged DC power to the output, and control means for controlling operation of the charging / discharging means. A DC power output device, wherein the control means controls switching of charging / discharging of the charging / discharging means based on a comparison between an output of the DC power source and a target value thereof.
2. The DC power output device according to claim 1, wherein the control unit causes the charging / discharging unit to perform a charging operation when the output of the DC power source is larger than the target value, and A DC power output device for discharging the charging / discharging means when the output of the source is smaller than the target value.
3. The DC power output device according to claim 1, wherein the target value is a moving average of an output of a DC power source.
4. The DC power output device according to claim 1, wherein the DC power source is a solar cell.
5. A photovoltaic power generation system comprising: the DC power output device according to claim 4; and an inverter that converts a DC output of the DC power output device into AC power.
JP17110799A 1999-06-17 1999-06-17 DC power output device and solar power generation system Expired - Lifetime JP4353446B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17110799A JP4353446B2 (en) 1999-06-17 1999-06-17 DC power output device and solar power generation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17110799A JP4353446B2 (en) 1999-06-17 1999-06-17 DC power output device and solar power generation system

Publications (2)

Publication Number Publication Date
JP2001005543A true JP2001005543A (en) 2001-01-12
JP4353446B2 JP4353446B2 (en) 2009-10-28

Family

ID=15917112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17110799A Expired - Lifetime JP4353446B2 (en) 1999-06-17 1999-06-17 DC power output device and solar power generation system

Country Status (1)

Country Link
JP (1) JP4353446B2 (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006174635A (en) * 2004-12-17 2006-06-29 Nissan Diesel Motor Co Ltd Power supply system
JP2007116825A (en) * 2005-10-20 2007-05-10 Fuji Electric Systems Co Ltd Double-layer capacitor power storage device
JP2008182017A (en) * 2007-01-24 2008-08-07 Meidensha Corp Control method of photovoltaic power generation system and power generation predicting apparatus of photovoltaic power generation system
JP2009060704A (en) * 2007-08-31 2009-03-19 Meidensha Corp Method and device for controlling photovoltaic power generating system
JP2009110510A (en) * 2007-09-26 2009-05-21 Enphase Energy Inc Method and apparatus for power conversion with maximum power point tracking and burst mode capability
JP2009268247A (en) * 2008-04-24 2009-11-12 Central Res Inst Of Electric Power Ind Power supply/demand control program, power supply/demand controller, and power supply/demand control system
CN101951542A (en) * 2010-09-10 2011-01-19 文创太阳能(福建)科技有限公司 Separable solar sound box
CN102065606A (en) * 2010-10-30 2011-05-18 深圳市创益科技发展有限公司 Controller and solar lamp comprising same
WO2011090096A1 (en) * 2010-01-20 2011-07-28 三洋電機株式会社 Charging and discharging system and charging and discharging control device
WO2011093362A1 (en) * 2010-01-27 2011-08-04 三洋電機株式会社 Power supply method, computer readable recording medium, and power generation system
WO2011118766A1 (en) * 2010-03-25 2011-09-29 三洋電機株式会社 Electric power supply system, central management device, power system stabilization system, central management device control method, and central management device control program
WO2011122672A1 (en) * 2010-03-30 2011-10-06 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
WO2011122669A1 (en) * 2010-03-30 2011-10-06 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
CN102243472A (en) * 2010-11-23 2011-11-16 上海市格致初级中学 Solar alarm clock
JP2011250673A (en) * 2010-04-26 2011-12-08 Omron Corp Energy controller and control method
JP2012043857A (en) * 2010-08-16 2012-03-01 Tokyo Electric Power Co Inc:The Bright and clear time determination device and photovoltaic power generation amount prediction system
JP2012505630A (en) * 2008-10-10 2012-03-01 エンフェイズ エナジー インコーポレイテッド Method and apparatus for improving burst mode during power conversion
CN102916480A (en) * 2011-08-03 2013-02-06 株式会社东芝 Solar power generation system
WO2013024709A1 (en) * 2011-08-12 2013-02-21 シャープ株式会社 Power generation control device and hybrid independent power generation system
JP2013172495A (en) * 2012-02-20 2013-09-02 Mitsubishi Heavy Ind Ltd Power storage type generating system
WO2014013854A1 (en) * 2012-07-17 2014-01-23 株式会社村田製作所 Sensor tag and power supply module for energy harvesting
JP2014059825A (en) * 2012-09-19 2014-04-03 Ntt Docomo Inc Photovoltaic power generation system
JP5475019B2 (en) * 2010-01-28 2014-04-16 三洋電機株式会社 Power supply method, computer-readable recording medium, and power generation system
JP2014209825A (en) * 2013-03-27 2014-11-06 アイシン精機株式会社 Power generation system
JP2015216830A (en) * 2014-04-14 2015-12-03 ティーエムイーアイシー コーポレーション Hybrid power converter for renewable energy power plant
JP2016103900A (en) * 2014-11-28 2016-06-02 株式会社日立製作所 Storage battery system
WO2016194410A1 (en) * 2015-06-02 2016-12-08 オムロン株式会社 Storage battery control device
WO2016199455A1 (en) * 2015-06-09 2016-12-15 オムロン株式会社 Storage battery control device
JPWO2015029138A1 (en) * 2013-08-27 2017-03-02 東芝三菱電機産業システム株式会社 Solar power system

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4660181B2 (en) * 2004-12-17 2011-03-30 Udトラックス株式会社 Power supply system
JP2006174635A (en) * 2004-12-17 2006-06-29 Nissan Diesel Motor Co Ltd Power supply system
JP2011078313A (en) * 2005-10-20 2011-04-14 Fuji Electric Systems Co Ltd Power storage device using electric double-layer capacitor
JP2007116825A (en) * 2005-10-20 2007-05-10 Fuji Electric Systems Co Ltd Double-layer capacitor power storage device
JP2008182017A (en) * 2007-01-24 2008-08-07 Meidensha Corp Control method of photovoltaic power generation system and power generation predicting apparatus of photovoltaic power generation system
JP2009060704A (en) * 2007-08-31 2009-03-19 Meidensha Corp Method and device for controlling photovoltaic power generating system
JP2009110510A (en) * 2007-09-26 2009-05-21 Enphase Energy Inc Method and apparatus for power conversion with maximum power point tracking and burst mode capability
JP2009268247A (en) * 2008-04-24 2009-11-12 Central Res Inst Of Electric Power Ind Power supply/demand control program, power supply/demand controller, and power supply/demand control system
JP2012505630A (en) * 2008-10-10 2012-03-01 エンフェイズ エナジー インコーポレイテッド Method and apparatus for improving burst mode during power conversion
US9461561B2 (en) 2008-10-10 2016-10-04 Enphase Energy, Inc. Method and apparatus for improved burst mode during power conversion
JP5355721B2 (en) * 2010-01-20 2013-11-27 三洋電機株式会社 Charge / discharge system and charge / discharge control device
WO2011090096A1 (en) * 2010-01-20 2011-07-28 三洋電機株式会社 Charging and discharging system and charging and discharging control device
JP5507582B2 (en) * 2010-01-27 2014-05-28 三洋電機株式会社 Power supply method, computer-readable recording medium, and power generation system
WO2011093362A1 (en) * 2010-01-27 2011-08-04 三洋電機株式会社 Power supply method, computer readable recording medium, and power generation system
US9148020B2 (en) 2010-01-27 2015-09-29 Panasonic Intellectual Property Management Co., Ltd. Method of controlling a battery, computer readable recording medium, electric power generation system and device controlling a battery
JP5475019B2 (en) * 2010-01-28 2014-04-16 三洋電機株式会社 Power supply method, computer-readable recording medium, and power generation system
JPWO2011118766A1 (en) * 2010-03-25 2013-07-04 三洋電機株式会社 Power supply system, centralized management device, system stabilization system, centralized management device control method, and centralized management device control program
WO2011118766A1 (en) * 2010-03-25 2011-09-29 三洋電機株式会社 Electric power supply system, central management device, power system stabilization system, central management device control method, and central management device control program
JP5383902B2 (en) * 2010-03-30 2014-01-08 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
WO2011122672A1 (en) * 2010-03-30 2011-10-06 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
WO2011122669A1 (en) * 2010-03-30 2011-10-06 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
JP5507669B2 (en) * 2010-03-30 2014-05-28 三洋電機株式会社 Power supply system, power supply method, and control program for power supply system
JP2011250673A (en) * 2010-04-26 2011-12-08 Omron Corp Energy controller and control method
JP2012043857A (en) * 2010-08-16 2012-03-01 Tokyo Electric Power Co Inc:The Bright and clear time determination device and photovoltaic power generation amount prediction system
CN101951542A (en) * 2010-09-10 2011-01-19 文创太阳能(福建)科技有限公司 Separable solar sound box
CN102065606A (en) * 2010-10-30 2011-05-18 深圳市创益科技发展有限公司 Controller and solar lamp comprising same
CN102243472A (en) * 2010-11-23 2011-11-16 上海市格致初级中学 Solar alarm clock
CN102916480A (en) * 2011-08-03 2013-02-06 株式会社东芝 Solar power generation system
WO2013024709A1 (en) * 2011-08-12 2013-02-21 シャープ株式会社 Power generation control device and hybrid independent power generation system
JP2013172495A (en) * 2012-02-20 2013-09-02 Mitsubishi Heavy Ind Ltd Power storage type generating system
WO2014013854A1 (en) * 2012-07-17 2014-01-23 株式会社村田製作所 Sensor tag and power supply module for energy harvesting
JP2014059825A (en) * 2012-09-19 2014-04-03 Ntt Docomo Inc Photovoltaic power generation system
JP2014209825A (en) * 2013-03-27 2014-11-06 アイシン精機株式会社 Power generation system
US10355487B2 (en) 2013-08-27 2019-07-16 Toshiba Mitsubishi-Electric Industrial Systems Corporation Photovoltaic system
JPWO2015029138A1 (en) * 2013-08-27 2017-03-02 東芝三菱電機産業システム株式会社 Solar power system
JP2015216830A (en) * 2014-04-14 2015-12-03 ティーエムイーアイシー コーポレーション Hybrid power converter for renewable energy power plant
JP2016103900A (en) * 2014-11-28 2016-06-02 株式会社日立製作所 Storage battery system
WO2016194410A1 (en) * 2015-06-02 2016-12-08 オムロン株式会社 Storage battery control device
US10355492B2 (en) 2015-06-02 2019-07-16 Omron Corporation Rechargeable battery controller
WO2016199455A1 (en) * 2015-06-09 2016-12-15 オムロン株式会社 Storage battery control device

Also Published As

Publication number Publication date
JP4353446B2 (en) 2009-10-28

Similar Documents

Publication Publication Date Title
US10270255B2 (en) Dual use photovoltaic system
US8907522B2 (en) Grid-connected power storage system and method for controlling grid-connected power storage system
US20160056642A1 (en) Managing renewable power generation
US8716891B2 (en) Energy storage system connected to a grid and multiple power generation modules and method of controlling the same
JP5800919B2 (en) power converter
US9442505B2 (en) Electric power control apparatus, electric power control method, and electric power feeding system
EP2605359B1 (en) Battery system and its control method
KR101156535B1 (en) Apparatus for energy storage, operation method thereof and energy storage system
KR101243909B1 (en) System for energy storage and control method thereof
US6369461B1 (en) High efficiency power conditioner employing low voltage DC bus and buck and boost converters
EP2793345B1 (en) Electric power supply system
ES2532282T3 (en) Power supply system
US9153963B2 (en) Electric power control apparatus and grid connection system having same
JP3271730B2 (en) Power generation system charge control device
US8482155B2 (en) Power converting device for renewable energy storage system
JP5584763B2 (en) DC power distribution system
JP5479182B2 (en) Power generation system and charge / discharge control device
US7550952B2 (en) Electric power control apparatus, power generation system and power grid system
KR101550755B1 (en) Power conversion apparatus directed to combined-cycle power generation system
US8963499B2 (en) Battery pack, method of controlling the same, and energy storage system including the battery pack
JP2015514390A (en) Battery capacity management
US8350411B2 (en) Modular system for unattended energy generation and storage
US6285572B1 (en) Method of operating a power supply system having parallel-connected inverters, and power converting system
US8806240B2 (en) Battery management system, method of controlling the same, and energy storage system including the battery management system
US4725740A (en) DC-AC converting arrangement for photovoltaic system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060525

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090630

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090724

R150 Certificate of patent or registration of utility model

Ref document number: 4353446

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120807

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130807

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term