JPH07225624A - Maximum electric power output control method of solar power generation system - Google Patents
Maximum electric power output control method of solar power generation systemInfo
- Publication number
- JPH07225624A JPH07225624A JP6017993A JP1799394A JPH07225624A JP H07225624 A JPH07225624 A JP H07225624A JP 6017993 A JP6017993 A JP 6017993A JP 1799394 A JP1799394 A JP 1799394A JP H07225624 A JPH07225624 A JP H07225624A
- Authority
- JP
- Japan
- Prior art keywords
- maximum
- voltage
- power
- point
- output
- 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.)
- Withdrawn
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 13
- 238000003491 array Methods 0.000 claims abstract description 15
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
Classifications
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Landscapes
- Control Of Electrical Variables (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は太陽光発電システムの最
大電力出力制御方法に関し、詳しくは、太陽電池を利用
した太陽光発電システムにおいて、出力電力が最大とな
るように動作電圧を追従させて制御する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maximum power output control method for a solar power generation system, and more specifically, in a solar power generation system using solar cells, the operating voltage is made to follow so that the output power becomes maximum. Regarding how to control.
【０００２】[0002]
【従来の技術】近年、クリーンな新エネルギー源として
太陽光発電システムが利用されつつあり、一般家庭用電
源としての太陽電池アレイ又はモジュール〔以下、太陽
電池アレイ等という〕と電力会社からの電力系統とを結
合させた電源系統連系システムが注目されている。2. Description of the Related Art In recent years, a solar power generation system is being used as a clean new energy source, and a solar cell array or module (hereinafter referred to as a solar cell array) as a general household power source and a power system from a power company. Power system interconnection systems that combine and are attracting attention.
【０００３】この種の太陽光発電システムは、太陽電池
セルの集合体からなる太陽電池アレイ等で発生した直流
電力をインバータにより所望の交流電力に変換して、一
般家庭内の負荷に電力を供給すると共に余剰の交流電力
を電力系統の系統電源に送電するようにしている。In this type of solar power generation system, DC power generated in a solar cell array or the like, which is an assembly of solar battery cells, is converted into desired AC power by an inverter, and power is supplied to a load in a general household. In addition, the surplus AC power is transmitted to the grid power supply of the power grid.
【０００４】上述した構成からなる太陽光発電システム
における太陽電池アレイ等の出力は、図２に示すように
凸状のＰ−Ｖ特性を有するのが一般的である。このＰ−
Ｖ特性では、最低電圧Ｖ0 〔０Ｖ〕から動作電圧Ｖを上
昇させていくと、出力電力Ｐが次第に増加して所定の動
作電圧Ｖで、出力電力Ｐが最大電力Ｐmax となる極大点
Ａに達する。その後、動作電圧Ｖを上昇させていくと、
出力電力Ｐが次第に減少して最終的に動作電圧Ｖが開放
電圧Ｖocに達すると、出力電力Ｐが０となる。The output of the solar cell array or the like in the solar power generation system having the above-described structure generally has a convex PV characteristic as shown in FIG. This P-
In the V characteristic, when the operating voltage V is increased from the minimum voltage V 0 [0V], the output power P gradually increases to a maximum point A at which the output power P becomes the maximum power Pmax at a predetermined operating voltage V. Reach After that, when the operating voltage V is increased,
When the output power P gradually decreases and finally the operating voltage V reaches the open circuit voltage Voc, the output power P becomes zero.
【０００５】このようなＰ−Ｖ特性に基づいて、太陽光
発電システムでは太陽電池アレイ等の出力を効率よく利
用するため、太陽電池アレイ等の出力電力Ｐが常に最大
電力Ｐmax となるように動作電圧Ｖを適正に制御する最
大電力出力制御方法が採用されている。On the basis of such PV characteristics, in the solar power generation system, the output of the solar cell array or the like is used efficiently, so that the output power P of the solar cell array or the like always operates to be the maximum power Pmax. A maximum power output control method for properly controlling the voltage V is adopted.
【０００６】この最大電力出力制御方法は、例えば、最
低電圧Ｖ0 〔０Ｖ〕を開始点ｘとして、動作電圧Ｖを所
定のステップ電圧幅で変化させ、そのステップごとに出
力電力Ｐを検出し、今回のステップで検出された出力電
力Ｐと前回のステップで検出された出力電力Ｐとを比較
する。尚、開始点ｘは開放電圧Ｖocとすることも可能で
ある。In this maximum power output control method, for example, the minimum voltage V 0 [0 V] is set as the starting point x, the operating voltage V is changed in a predetermined step voltage width, and the output power P is detected for each step. The output power P detected in this step is compared with the output power P detected in the previous step. The starting point x can be the open circuit voltage Voc.
【０００７】そして、今回のステップでの出力電力Ｐが
前回のステップでの出力電力Ｐよりも増加している場合
には、出力電力Ｐが最大電力Ｐmax となる極大点Ａに達
していないため、動作電圧Ｖをステップ電圧幅だけ持ち
上げた電圧に設定し、逆に、今回のステップでの出力電
力Ｐが前回のステップでの出力電力Ｐよりも減少してい
る場合には、出力電力Ｐが最大電力Ｐmax となる極大点
Ａを過ぎているため、動作電圧Ｖをステップ電圧幅だけ
下げた電圧に設定する。When the output power P at this step is larger than the output power P at the previous step, the output power P has not reached the maximum point A at which the maximum power Pmax is reached. When the operating voltage V is set to a voltage increased by the step voltage width, and conversely, when the output power P at this step is smaller than the output power P at the previous step, the output power P is maximum. Since the maximum point A at which the electric power Pmax is reached has passed, the operating voltage V is set to a voltage lowered by the step voltage width.
【０００８】上述したようなステップごとの出力電力Ｐ
の比較を繰り返すことにより、太陽電池アレイ等の出力
電力Ｐが常に最大電力Ｐmax となる動作領域ｍで動作電
圧Ｖを追従させてインバータを駆動制御するようにして
いる。Output power P for each step as described above
By repeating the above comparison, the operating voltage V is made to follow in the operating region m where the output power P of the solar cell array or the like is always the maximum power Pmax, and the inverter is drive-controlled.
【０００９】[0009]
【発明が解決しようとする課題】ところで、前述したよ
うに単一の太陽電池アレイ等の出力は、通常、図２に示
すように凸状のＰ−Ｖ特性を有するが、複数の太陽電池
アレイ等を直列に接続して使用する場合、例えば、直列
接続された二つの太陽電池アレイ等を方位を異ならせて
配置〔一方を南向き配置、他方を西向き配置〕した場
合、これら太陽電池アレイ等の全出力は、図３に示すよ
うに出力電力Ｐの極大点ａ，ｂが二つ存在することがあ
る。尚、このように出力電力Ｐの極大点ａ，ｂが二つ存
在する現象は、直列接続された複数の太陽電池アレイ等
を同一方位に向けて配置した場合であっても、雲や樹
木、建造物などの影により発生する場合がある。By the way, as described above, the output of a single solar cell array or the like usually has a convex PV characteristic as shown in FIG. , Etc. are connected in series, for example, when two solar cell arrays etc. connected in series are arranged in different directions (one is arranged facing south, the other is arranged facing west), these solar cell arrays, etc. There are two maximum points a and b of the output power P as shown in FIG. It should be noted that the phenomenon that there are two maximum points a and b of the output power P is such that even when a plurality of solar cell arrays connected in series are arranged in the same direction, clouds, trees, It may be caused by the shadow of a building.
【００１０】いずれの場合にしても、太陽電池アレイ等
の出力において出力電力Ｐの極大点ａ，ｂが二つ以上存
在すると、以下のような問題が生じる。In any case, if there are two or more maximum points a and b of the output power P in the output of the solar cell array or the like, the following problems will occur.
【００１１】即ち、従来の最大電力出力制御方法では、
図２に示すように最低電圧Ｖ0 〔又は開放電圧Ｖoc〕を
開始点ｘとして、動作電圧Ｖを所定のステップ電圧幅で
変化させ、そのステップごとに出力電力Ｐを検出してい
った時に、最初に検出した極大点Ａを最大電力Ｐmax と
して動作領域を設定し、その動作領域で動作電圧Ｖを追
従制御するようにしている。That is, in the conventional maximum power output control method,
As shown in FIG. 2, with the lowest voltage V 0 [or open circuit voltage Voc] as the starting point x, the operating voltage V is changed in a predetermined step voltage width, and the output power P is detected at each step, The operating point is set with the maximum point A detected first as the maximum electric power Pmax, and the operating voltage V is tracked and controlled in the operating area.
【００１２】従って、例えば、二つの極大点ａ，ｂが同
一の出力電力Ｐである場合には問題ないが、二つの極大
点ａ，ｂが異なる出力電力Ｐである場合に問題がある。
即ち、図３に示すように動作電圧Ｖを所定のステップ電
圧幅で変化させ、そのステップごとに出力電力Ｐを検出
していった時、最初に検出した一方の極大点ａが他方の
極大点ｂよりも出力電力Ｐが小さい場合、その最初に検
出した一方の極大点ａを最大電力として動作領域を設定
し、その動作領域で動作電圧Ｖを追従制御するため、実
際上の最大電力Ｐmax である他方の極大点ｂを検出せ
ず、実際上の最大電力Ｐmax で動作電圧Ｖを追従制御す
ることができない。Therefore, for example, there is no problem when the two maximum points a and b have the same output power P, but there is a problem when the two maximum points a and b have different output power P.
That is, as shown in FIG. 3, when the operating voltage V is changed in a predetermined step voltage width and the output power P is detected for each step, the first detected maximum point a is the other maximum point a. When the output power P is smaller than b, the one maximum point a detected first is set as the maximum power in the operating region, and the operating voltage V is tracked and controlled in the operating region. Therefore, the actual maximum power Pmax is set. It is not possible to follow the operating voltage V with the actual maximum power Pmax without detecting the other local maximum point b.
【００１３】そこで、本発明は上記問題点に鑑みて提案
されたもので、その目的とするところは、複数の太陽電
池アレイ等を直列接続することにより、それら太陽電池
アレイ等のＰ−Ｖ特性に複数の極大点が現出した場合で
あっても、実際上の最大電力となる極大点を確実に検出
し、その最大電力で動作電圧を追従制御し得る太陽光発
電システムの最大電力出力制御方法を提供することにあ
る。Therefore, the present invention has been proposed in view of the above problems, and an object of the present invention is to connect a plurality of solar cell arrays or the like in series to obtain PV characteristics of the solar cell arrays or the like. Maximum power output control of a photovoltaic power generation system that can reliably detect the actual maximum power even when multiple maximum points appear in the To provide a method.
【００１４】[0014]
【課題を解決するための手段】上記目的を達成するため
の技術的手段として、本発明は、出力特性の異なる複数
の太陽電池アレイ等を直列接続したことによりその出力
電力の極大点が複数存在する太陽光発電システムを出力
制御するに際して、開放電圧又は最低電圧のいずれかを
開始点として、最低電圧又は開放電圧の電圧最大限まで
動作電圧を所定のステップ電圧幅で変化させ、出力電力
のすべての極大点をそれぞれ検出した上で、電圧最大限
を折り返し点として、その折り返し点から動作電圧を所
定のステップ電圧幅で変化させ、検出した極大点のうち
で最大電力となる極大点へ移行させるようにしたことを
特徴とする。As a technical means for achieving the above object, the present invention has a plurality of maximum points of output power by connecting a plurality of solar cell arrays having different output characteristics in series. When controlling the output of the solar power generation system, the operating voltage is changed in a predetermined step voltage range from the open voltage or the minimum voltage as the starting point to the maximum voltage of the minimum voltage or open voltage, and the total output power is changed. After detecting each of the maximum points, the maximum voltage is set as the turning point, and the operating voltage is changed from that turning point with a predetermined step voltage width, and the detected maximum point is the maximum power point. It is characterized by doing so.
【００１５】[0015]
【作用】本発明方法では、開放電圧又は最低電圧のいず
れかを開始点として、まず、最低電圧又は開放電圧の電
圧最大限まで動作電圧を変化させるため、出力電力のす
べての極大点を検出することにより、それら極大点のう
ちで最大電力となる極大点を判別できる。その結果、電
圧最大限を折り返し点として、動作電圧を最大電力とな
る極大点へ移行させることによりその最大電力で追従制
御できる。In the method of the present invention, the operating voltage is first changed to the maximum voltage of the minimum voltage or the open circuit voltage by using either the open circuit voltage or the minimum voltage as the starting point, so that all the maximum points of the output power are detected. As a result, the maximum point having the maximum power can be discriminated from the maximum points. As a result, it is possible to perform follow-up control at the maximum power by shifting the operating voltage to the maximum point where the maximum power is reached, with the maximum voltage as the turning point.
【００１６】[0016]
【実施例】本発明に係る太陽光発電システムの最大電力
出力制御方法の実施例を図１（ａ）（ｂ）に示して説明
する。EXAMPLE An example of a maximum power output control method for a photovoltaic power generation system according to the present invention will be described with reference to FIGS. 1 (a) and 1 (b).
【００１７】図１（ａ）は太陽光発電システムにおける
太陽電池アレイ等のＰ−Ｖ特性の一例を示し、例えば、
二つの太陽電池アレイ等を直列接続し、その一方を南向
き配置、他方を西向き配置した場合や、直列接続された
二つの太陽電池アレイ等を同一方位に向けて配置した場
合であっても、雲や樹木、建造物などの影により発生す
る場合などに、このＰ−Ｖ特性では二つの極大点ａ，ｂ
を有する。尚、この例では、二つの極大点ａ，ｂのう
ち、一方の極大点ａが他方の極大点ｂよりも出力電力Ｐ
が小さいものとする。FIG. 1A shows an example of PV characteristics of a solar cell array or the like in a solar power generation system.
If two solar cell arrays are connected in series, one of them is arranged facing south and the other is arranged west, or even if two solar cell arrays connected in series are arranged in the same direction, This PV characteristic has two maximum points a and b when the shadows are caused by clouds, trees, buildings, or the like.
Have. In this example, of the two maximum points a and b, one maximum point a has a higher output power P than the other maximum point b.
Is small.
【００１８】本発明方法では、これら二つの太陽電池ア
レイ等を具備した太陽光発電システムを出力制御するに
際して、最低電圧Ｖ0 〔又は開放電圧Ｖoc〕を開始点ｘ
として、まず、開放電圧Ｖoc〔又は最低電圧Ｖ0 〕の電
圧最大限まで動作電圧Ｖを所定のステップ電圧幅で変化
させる。In the method of the present invention, the minimum voltage V 0 [or open circuit voltage Voc] is set as the starting point x when controlling the output of the photovoltaic power generation system including these two solar cell arrays.
First, the operating voltage V is changed in a predetermined step voltage width to the maximum voltage of the open circuit voltage Voc [or the minimum voltage V 0 ].
【００１９】この時、そのステップごとに出力電力Ｐを
検出し、今回のステップで検出された出力電力Ｐと前回
のステップで検出された出力電力Ｐとを比較する。この
比較により、今回のステップでの出力電力Ｐが前回のス
テップでの出力電力Ｐよりも増加している場合には、出
力電力Ｐが極大点ａ，ｂに達していないことになり、逆
に、今回のステップでの出力電力Ｐが前回のステップで
の出力電力Ｐよりも減少している場合には、出力電力Ｐ
が極大点ａ，ｂを過ぎていることになる。このようにし
て出力電力Ｐのすべての極大点ａ，ｂをそれぞれ検出
し、それら各極大点ａ，ｂでの出力電力Ｐの大きさを比
較することにより、それら各極大点ａ，ｂのうちで最大
電力Ｐmax となる極大点ｂを判別する。At this time, the output power P is detected at each step, and the output power P detected at the current step and the output power P detected at the previous step are compared. According to this comparison, when the output power P at this step is larger than the output power P at the previous step, it means that the output power P has not reached the maximum points a and b, and conversely. , If the output power P at this step is smaller than the output power P at the previous step, the output power P
Is beyond the maximum points a and b. In this way, by detecting all the local maximum points a and b of the output power P and comparing the magnitudes of the output power P at the respective local maximum points a and b, among the respective local maximum points a and b, The maximum point b at which the maximum power Pmax is obtained is determined.
【００２０】その上で、開放電圧Ｖoc〔又は最低電圧Ｖ
0 〕の電圧最大限を折り返し点ｙとして、その折り返し
点ｙから動作電圧Ｖを所定のステップ電圧幅で変化さ
せ、検出した極大点ａ，ｂのうちで最大電力Ｐmax とな
る極大点ｂへ移行させて終了点ｚとし、その極大点ｂを
最大電力Ｐmax として動作領域ｍを設定し、その動作領
域ｍで動作電圧Ｖを追従させてインバータを駆動制御す
る。In addition, the open circuit voltage Voc [or the minimum voltage Voc
[0 ] is set as the turning point y, and the operating voltage V is changed from the turning point y by a predetermined step voltage width, and the detected maximum points a and b are shifted to the maximum point b having the maximum power Pmax. Then, the end point z is set, the maximum point b is set to the maximum power Pmax, and the operating region m is set. In the operating region m, the operating voltage V is made to follow and the inverter is drive-controlled.
【００２１】上述した例での最大電力出力制御では、一
方の極大点ａが他方の極大点ｂよりも小さい場合につい
て説明したが、朝夕などの日射時間帯によっては、図１
（ｂ）に示すように一方の極大点ａが他方の極大点ｂよ
りも大きくなって逆転することもある。この場合も、最
低電圧Ｖ0 〔又は開放電圧Ｖoc〕を開始点ｘとして電圧
最大限まで動作電圧Ｖを変化させ、その電圧最大限を折
り返し点ｙとして、その折り返し点ｙから動作電圧Ｖを
変化させて最大電力Ｐmax となる極大点ａへ移行させて
終了点ｚとする一連の制御を所定時間の経過後に再度実
行することにより、逆転した最大電力Ｐmax となる一方
の極大点ａを検出し、その極大点ａに基づく動作領域ｍ
で動作電圧Ｖを追従制御する。In the maximum power output control in the above-mentioned example, the case where one local maximum point a is smaller than the other local maximum point b has been described. However, depending on the solar radiation time zone such as morning and evening, FIG.
As shown in (b), one local maximum point a may become larger than the other local maximum point b and may be reversed. Also in this case, the operating voltage V is changed to the maximum voltage with the lowest voltage V 0 [or open circuit voltage Voc] as the starting point x, and the maximum voltage is changed to the turning point y, and the operating voltage V is changed from the turning point y. Then, by shifting to the maximum point a at which the maximum electric power Pmax is reached and executing a series of control for setting the end point z again after a lapse of a predetermined time, one maximum point a at which the reversed maximum electric power Pmax is detected, Operation area m based on the maximum point a
The operating voltage V is tracked and controlled.
【００２２】このように、朝夕などの日射時間帯によ
り、各極大点ａ，ｂの出力電力Ｐが大小逆転する場合で
あっても、上述した一連の制御を所定時間間隔で繰り返
し実行し、その日射時間帯での最大電力Ｐmax となる極
大点ａ，ｂを検出することによって、日射時間帯にかか
わらず実際上の最大電力Ｐmax となる極大点ａ，ｂを正
確に検出できて、その実際上の最大電力Ｐmax で動作電
圧Ｖを確実に追従制御できる。As described above, even when the output power P at each of the maximum points a and b is reversed in magnitude due to the solar radiation time zone such as morning and evening, the series of controls described above is repeatedly executed at predetermined time intervals, and By detecting the maximum points a and b that have the maximum power Pmax in the solar radiation time zone, the maximum points a and b that have the maximum actual power Pmax can be accurately detected regardless of the solar radiation time zone, and The operating voltage V can be reliably tracked and controlled with the maximum power Pmax.
【００２３】[0023]
【発明の効果】本発明に係る太陽光発電システムの最大
電力出力制御方法によれば、複数の太陽電池アレイ等を
直列接続することによりその出力特性に複数の極大点を
有する場合であっても、それら極大点のうちで最大電力
となる極大点を動作領域として動作電圧を常に追従制御
させることが確実に行なえ、太陽光発電システムを効率
よく稼働させることができてその実用的価値は大であ
る。According to the maximum power output control method for a photovoltaic power generation system of the present invention, even when a plurality of solar cell arrays and the like are connected in series, the output characteristics thereof have a plurality of maximum points. Of these maximum points, it is possible to reliably control the operating voltage with the maximum point of maximum power as the operating area, and to operate the solar power generation system efficiently, and its practical value is great. is there.
【図１】（ａ）（ｂ）は二つの太陽電池アレイ等の直列
接続により二つの極大点を有するＰ−Ｖ特性に基づく本
発明方法の二例を説明するための波形図1A and 1B are waveform charts for explaining two examples of the method of the present invention based on the PV characteristic having two local maximum points by connecting two solar cell arrays or the like in series.
【図２】太陽電池アレイ等単体のＰ−Ｖ特性に基づく従
来の最大電力出力制御方法を説明するための波形図FIG. 2 is a waveform diagram for explaining a conventional maximum power output control method based on PV characteristics of a single solar cell array or the like.
【図３】二つの太陽電池アレイ等を直列接続した場合に
二つの極大点を有するＰ−Ｖ特性を示す波形図FIG. 3 is a waveform diagram showing a P-V characteristic having two maximum points when two solar cell arrays and the like are connected in series.
【符号の説明】 Ｐ 出力電力 Ｖ 動作電圧 ａ，ｂ 極大点 Ｖ0 最低電圧 Ｖoc 開放電圧 Ｐmax 最大電力 ｘ 開始点 ｙ 折り返し点[Explanation of symbols] P output power V operating voltage a, b maximum point V 0 minimum voltage Voc open circuit voltage Pmax maximum power x starting point y folding point
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高田 啓一郎 京都府京都市右京区梅津高畝町47番地 日 新電機株式会社内 (72)発明者 夏田 育千 京都府京都市右京区梅津高畝町47番地 日 新電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keiichiro Takada, 47 Umezu Takaunemachi, Ukyo-ku, Kyoto City, Kyoto Prefecture Nissin Electric Co., Ltd. Electric Co., Ltd.
Claims (1)
又はモジュールを直列接続したことによりその出力電力
の極大点が複数存在する太陽光発電システムを出力制御
するに際して、開放電圧又は最低電圧のいずれかを開始
点として、最低電圧又は開放電圧の電圧最大限まで動作
電圧を所定のステップ電圧幅で変化させ、出力電力のす
べての極大点をそれぞれ検出した上で、電圧最大限を折
り返し点として、その折り返し点から動作電圧を所定の
ステップ電圧幅で変化させ、検出した極大点のうちで最
大電力となる極大点へ移行させるようにしたことを特徴
とする太陽光発電システムの最大電力出力制御方法。1. When controlling the output of a solar power generation system in which a plurality of solar cell arrays or modules having different output characteristics are connected in series to have a plurality of maximum points of the output power, either an open circuit voltage or a minimum voltage is used. Starting point is, the operating voltage is changed in the predetermined step voltage width to the minimum voltage or the maximum voltage of the open circuit voltage, and after detecting all the maximum points of the output power respectively, the maximum voltage is set as the folding point and the A maximum power output control method for a photovoltaic power generation system, characterized in that an operating voltage is changed from a turning point by a predetermined step voltage width, and the maximum power output is shifted to a maximum point of the detected maximum points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6017993A JPH07225624A (en) | 1994-02-15 | 1994-02-15 | Maximum electric power output control method of solar power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6017993A JPH07225624A (en) | 1994-02-15 | 1994-02-15 | Maximum electric power output control method of solar power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07225624A true JPH07225624A (en) | 1995-08-22 |
Family
ID=11959256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6017993A Withdrawn JPH07225624A (en) | 1994-02-15 | 1994-02-15 | Maximum electric power output control method of solar power generation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07225624A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5869956A (en) * | 1996-09-06 | 1999-02-09 | Canon Kabushiki Kaisha | Solar power generation apparatus and power control device therefor |
| JP2008300745A (en) * | 2007-06-01 | 2008-12-11 | Nippon Oil Corp | Power conditioner for photovoltaic power generation, photovoltaic power generation system, and output power control method for photovoltaic power generation system |
| CN101873090A (en) * | 2010-07-06 | 2010-10-27 | 太原科技大学 | Optimal control method for maximum power output of photovoltaic power generation system with partial shading |
| CN101873091A (en) * | 2010-07-12 | 2010-10-27 | 中电电气集团有限公司 | Method for tracking solar double-peak maximum power point |
| JP5057599B1 (en) * | 2011-12-26 | 2012-10-24 | 株式会社計測技術研究所 | Load device |
| JP2013520739A (en) * | 2010-02-24 | 2013-06-06 | エスエムエー ソーラー テクノロジー アーゲー | How to determine the maximum power point of a photoelectric generator |
| KR101273392B1 (en) * | 2009-08-19 | 2013-06-11 | 현대중공업 주식회사 | Maximum power point detecting means of photovoltaic power generation system |
| JP2014067259A (en) * | 2012-09-26 | 2014-04-17 | Panasonic Corp | Power conditioner |
| EP1750193B1 (en) * | 2005-07-14 | 2019-01-16 | SMA Solar Technology AG | Method for finding a power output peak of a photovoltaic generator |
-
1994
- 1994-02-15 JP JP6017993A patent/JPH07225624A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5869956A (en) * | 1996-09-06 | 1999-02-09 | Canon Kabushiki Kaisha | Solar power generation apparatus and power control device therefor |
| EP1750193B1 (en) * | 2005-07-14 | 2019-01-16 | SMA Solar Technology AG | Method for finding a power output peak of a photovoltaic generator |
| JP2008300745A (en) * | 2007-06-01 | 2008-12-11 | Nippon Oil Corp | Power conditioner for photovoltaic power generation, photovoltaic power generation system, and output power control method for photovoltaic power generation system |
| KR101273392B1 (en) * | 2009-08-19 | 2013-06-11 | 현대중공업 주식회사 | Maximum power point detecting means of photovoltaic power generation system |
| JP2013520739A (en) * | 2010-02-24 | 2013-06-06 | エスエムエー ソーラー テクノロジー アーゲー | How to determine the maximum power point of a photoelectric generator |
| CN101873090A (en) * | 2010-07-06 | 2010-10-27 | 太原科技大学 | Optimal control method for maximum power output of photovoltaic power generation system with partial shading |
| CN101873091A (en) * | 2010-07-12 | 2010-10-27 | 中电电气集团有限公司 | Method for tracking solar double-peak maximum power point |
| JP5057599B1 (en) * | 2011-12-26 | 2012-10-24 | 株式会社計測技術研究所 | Load device |
| JP2014067259A (en) * | 2012-09-26 | 2014-04-17 | Panasonic Corp | Power conditioner |
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