JPH0973328A - Solar light power generation controller - Google Patents
Solar light power generation controllerInfo
- Publication number
- JPH0973328A JPH0973328A JP7248272A JP24827295A JPH0973328A JP H0973328 A JPH0973328 A JP H0973328A JP 7248272 A JP7248272 A JP 7248272A JP 24827295 A JP24827295 A JP 24827295A JP H0973328 A JPH0973328 A JP H0973328A
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- converter
- voltage
- solar cell
- optimum operating
- 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
Links
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
- Photovoltaic Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electrical Variables (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、太陽電池を常に最
大電力で発電させる機能を持つ太陽光発電制御装置の改
良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a photovoltaic power generation control device having a function of constantly generating maximum power from a solar cell.
【０００２】[0002]
【従来の技術】太陽電池には図４に示すＩ−Ｖ特性があ
り、最大出力を示す最適動作点（Ｖｏｐ，Ｉｏｐ）が存
在する。最適動作点は太陽電池の種類又は太陽電池セル
の組み合わせ方によって異なり、また日射量や温度の変
化にも影響を受けることが知られている。太陽光発電シ
ステムにおいて太陽電池から効率良く出力を得るために
は太陽電池を最適動作点付近で制御する必要がある。2. Description of the Related Art A solar cell has the IV characteristic shown in FIG. 4, and has an optimum operating point (Vop, Iop) at which the maximum output is obtained. It is known that the optimum operating point differs depending on the type of solar cell or the combination of solar cells, and is also affected by changes in the amount of solar radiation and temperature. In a solar power generation system, it is necessary to control the solar cell near the optimum operating point in order to efficiently obtain the output from the solar cell.
【０００３】図５及び図６は従来の太陽光発電システム
の構成を示す。太陽電池２１の出力電力は逆接防止ダイ
オード２２及び平滑コンデンサ２３を介して、チョーク
コイル２４ａ、逆接防止ダイオード２４ｂ、平滑コンデ
ンサ２４ｃ及びスイッチングトランジスタ２４ｄ等より
構成されるＤＣ／ＤＣコンバータ２４に入力し、ＤＣ／
ＤＣコンバータ２４の出力電力として負荷２５に供給さ
れる。太陽電池２１の負荷２５に対する供給電力はＤＣ
／ＤＣコンバータ２４の出力電圧によって決定する。し
たがって、ＤＣ／ＤＣコンバータ２４の出力電圧を制御
することにより太陽電池２１を常に最適動作点付近で発
電させることができる。以下に制御方法を説明する。5 and 6 show the structure of a conventional solar power generation system. The output power of the solar cell 21 is input to a DC / DC converter 24 including a choke coil 24a, a reverse connection prevention diode 24b, a smoothing capacitor 24c, a switching transistor 24d, and the like via a reverse connection prevention diode 22 and a smoothing capacitor 23, and a DC /
The output power of the DC converter 24 is supplied to the load 25. The power supplied to the load 25 of the solar cell 21 is DC
It is determined by the output voltage of the / DC converter 24. Therefore, by controlling the output voltage of the DC / DC converter 24, the solar cell 21 can always generate power near the optimum operating point. The control method will be described below.
【０００４】図５に示されるものは最適動作点制御を用
いた従来の太陽光発電システムである。制御部２６では
太陽電池２１の出力電流信号及び出力電圧信号を電流検
出器２７、電圧検出器２８及びＡ／Ｄ変換器２９，３０
を経てサンプリングして出力電力を算出し、出力電力の
推移から動作点を推定し、最適動作点に近づくようにＤ
Ｃ／ＤＣコンバータ２４を制御する。FIG. 5 shows a conventional photovoltaic power generation system using optimum operating point control. The control unit 26 outputs the output current signal and the output voltage signal of the solar cell 21 to the current detector 27, the voltage detector 28, and the A / D converters 29 and 30.
After that, the output power is calculated by sampling, the operating point is estimated from the transition of the output power, and D is calculated so as to approach the optimum operating point.
The C / DC converter 24 is controlled.
【０００５】図６に示されるものは一定電圧制御を用い
た太陽光発電システムである。制御部２６では太陽電池
２１の出力電圧を既定の値に設定し、日射量の変化に対
しても常に一定の電圧を維持するようにＤＣ／ＤＣコン
バータ２４を制御する。FIG. 6 shows a photovoltaic power generation system using constant voltage control. The control unit 26 sets the output voltage of the solar cell 21 to a predetermined value, and controls the DC / DC converter 24 so as to always maintain a constant voltage even when the amount of solar radiation changes.
【０００６】[0006]
【発明が解決しようとする課題】前記従来の太陽光発電
システムには以下のような問題点がある。The above-mentioned conventional photovoltaic power generation system has the following problems.
【０００７】図５のシステムは、太陽電池２１の出力電
力の変化から最適動作点を推定するため、太陽電池２１
の種類によらず、効率良く出力を得ることができる。し
かし、制御方法が複雑になることや、出力電流を測定す
るための電流検出器２７が必要であり、一般的にはシャ
ント抵抗や電流センサ等の比較的高価な部品を用いて構
成するため、コストが増加すること等の問題点がある。The system of FIG. 5 estimates the optimum operating point from the change in the output power of the solar cell 21, so that the solar cell 21
It is possible to efficiently obtain the output regardless of the type. However, the control method becomes complicated, and the current detector 27 for measuring the output current is required, and since it is generally configured using relatively expensive components such as a shunt resistor and a current sensor, There are problems such as an increase in cost.
【０００８】図６のシステムは、回路構成も簡単で、制
御も容易であるが、太陽電池２１の出力電圧を設定する
ために予め使用する太陽電池２１の最適動作電圧を正確
に調べる必要があり、また異なる太陽電池２１の使用に
際しては制御ソフトの変更が必要となる等、システムの
汎用性に問題がある。The system of FIG. 6 has a simple circuit configuration and is easy to control, but it is necessary to accurately check the optimum operating voltage of the solar cell 21 to be used in advance in order to set the output voltage of the solar cell 21. In addition, there is a problem in the versatility of the system such that the control software needs to be changed when using different solar cells 21.
【０００９】本発明の目的は、コストダウンを図ること
ができ、しかも、種類やセルの組み合わせ方が異なる太
陽電池に対して事前準備の必要なしに使用することがで
きる太陽光発電制御装置を提供することである。An object of the present invention is to provide a photovoltaic power generation control device which can reduce the cost and can be used for solar cells having different types and combinations of cells without the need for advance preparation. It is to be.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、太陽電池の出力電力を受けて負荷に供給
するＤＣ−ＤＣコンバータの入力電流を増減させること
によって、太陽電池の最適動作点制御を行う太陽光発電
制御装置において、最適動作電圧設定モードでは前記Ｄ
Ｃ−ＤＣコンバータの入力電流を増加させながら前記Ｄ
Ｃ−ＤＣコンバータの出力電圧が最大になった時の太陽
電池出力電圧を最適動作電圧に設定し、通常動作では太
陽電池出力電圧を前記設定された最適動作電圧に維持す
るように前記ＤＣ−ＤＣコンバータを制御するようにし
たことを特徴とするものである。In order to achieve the above object, the present invention optimizes the solar cell by increasing or decreasing the input current of a DC-DC converter which receives the output power of the solar cell and supplies it to a load. In the photovoltaic power generation control device that performs operating point control, in the optimum operating voltage setting mode, the D
While increasing the input current of the C-DC converter, the D
The DC-DC is set so that the output voltage of the solar cell when the output voltage of the C-DC converter becomes maximum is set to the optimum operating voltage, and the solar cell output voltage is maintained at the set optimum operating voltage in the normal operation. It is characterized in that the converter is controlled.
【００１１】[0011]
【発明の実施の形態】図１は本発明の実施の一形態であ
る太陽光発電制御装置を含む太陽光発電システムの構成
を示す。1 shows the configuration of a photovoltaic power generation system including a photovoltaic power generation control apparatus according to an embodiment of the present invention.
【００１２】太陽電池１の出力電力は逆接防止ダイオー
ド２及び平滑コンデンサ３を介して、チョークコイル４
ａ、逆接防止ダイオード４ｂ、平滑コンデンサ４ｃ及び
スイッチングトランジスタ４ｄ等より構成されるＤＣ／
ＤＣコンバータ４に入力し、ＤＣ／ＤＣコンバータ４の
出力電力として負荷５に供給される。ＤＣ／ＤＣコンバ
ータ４は制御部６からの制御信号によって制御される。
太陽電池１の出力電圧は電圧検出器７で検出され、Ａ／
Ｄ変換器８を介して制御部６に入力される。また、ＤＣ
／ＤＣコンバータ４の出力電圧は電圧検出器９で検出さ
れ、Ａ／Ｄ変換器１０を介して制御部６に入力される。
ＣＮは太陽光発電制御装置である。The output power of the solar cell 1 is passed through a reverse connection prevention diode 2 and a smoothing capacitor 3 to a choke coil 4
DC / composed of a, reverse connection prevention diode 4b, smoothing capacitor 4c, switching transistor 4d, etc.
It is input to the DC converter 4 and is supplied to the load 5 as output power of the DC / DC converter 4. The DC / DC converter 4 is controlled by a control signal from the control unit 6.
The output voltage of the solar cell 1 is detected by the voltage detector 7, and A /
It is input to the control unit 6 via the D converter 8. Also, DC
The output voltage of the / DC converter 4 is detected by the voltage detector 9 and input to the control unit 6 via the A / D converter 10.
CN is a photovoltaic power generation control device.
【００１３】制御部６の詳細を図２を示す。制御部６
は、演算部６ａ、太陽電池１の現在サンプリング時の出
力電圧Ｖ1N、前回サンプリング時の出力電圧Ｖ1B、ＤＣ
／ＤＣコンバータ４の現在サンプリング時の出力電圧Ｖ
2N、前回サンプリング時の出力電圧Ｖ2B及び最適動作電
圧値Ｖｏｐを記憶するメモリ６ｂ及びＰＷＭパルス発生
器６ｃより構成される。本形態では、ＤＣ／ＤＣコンバ
ータ４を入力電流増減のための制御信号により制御して
いる。例えば、入力電流増減のための制御信号として、
ＤＣ／ＤＣコンバータ４内のスイッチングトランジスタ
４ｄを駆動するためのＰＷＭパルス信号を用いている。
この場合、ＤＣ／ＤＣコンバータ４の入力電流を増加す
れば，太陽電池１の出力電流が増加し、出力電圧は減少
する。反対に、入力電流を減少すれば、太陽電池１の出
力電流が減少し、出力電圧は増加する。The details of the control unit 6 are shown in FIG. Control unit 6
Are the output voltage V 1N of the computing unit 6a and the solar cell 1 at the current sampling time, the output voltage V 1B of the previous sampling time, DC
/ DC converter 4 output voltage V at the time of current sampling
2N , the output voltage V 2B at the time of the previous sampling and the memory 6b for storing the optimum operating voltage value Vop and the PWM pulse generator 6c. In this embodiment, the DC / DC converter 4 is controlled by the control signal for increasing / decreasing the input current. For example, as a control signal for increasing or decreasing the input current,
The PWM pulse signal for driving the switching transistor 4d in the DC / DC converter 4 is used.
In this case, if the input current of the DC / DC converter 4 is increased, the output current of the solar cell 1 is increased and the output voltage is decreased. On the contrary, if the input current is decreased, the output current of the solar cell 1 is decreased and the output voltage is increased.
【００１４】以下に、図３のフローチャートを用いて本
形態の制御手順を説明する。The control procedure of this embodiment will be described below with reference to the flowchart of FIG.
【００１５】システム起動後、制御部６ではサンプリン
グ周期毎に太陽電池１の出力電圧Ｖ1N及びＤＣ／ＤＣコ
ンバータ４の出力電圧Ｖ2Nを読み込む（ステップ１）。
最適動作電圧Ｖｏｐの設定モードかどうかを判断して
（ステップ２）、Ｖｏｐの設定モードの場合、ＤＣ／Ｄ
Ｃコンバータ４の入力電流を増加していく。太陽電池１
の出力電力はＤＣ／ＤＣコンバータ４の出力電圧により
決定するが、出力特性曲線上の最大出力以上の出力は得
られないので、太陽電池１が最適動作点に到達するまで
はＤＣ／ＤＣコンバータ４の出力電圧は増加するが、最
適動作点を超過すると、ＤＣ／ＤＣコンバータ４の出力
電圧は減少に転じる。したがって、ＤＣ／ＤＣコンバー
タ４の出力電圧が最大値を示した時の太陽電池１の出力
電圧が最適動作電圧Ｖｏｐとなる。演算部６ａでは、サ
ンプリング周期毎にＤＣ／ＤＣコンバータ４の出力電圧
Ｖ2Nを前回サンプリング時の出力電圧Ｖ2Bと比較し（ス
テップ３）、Ｖ2N＜Ｖ2Bになった時点で、Ｖ2Bに対応す
る太陽電池１の出力電圧Ｖ1Bを最適動作電圧Ｖｏｐと設
定する（ステップ４）。Ｖｏｐをメモリ６ｂに記憶し、
以後はサンプリング周期毎に太陽電池１の現在出力電圧
Ｖ1NとＶｏｐを比較して（ステップ５）、Ｖ1N＞Ｖｏｐ
の場合は、ＤＣ／ＤＣコンバータ４の入力電流を増加し
て太陽電池１の出力電圧を減少させ（ステップ６）、Ｖ
1N＜Ｖｏｐの場合は、入力電流を減少して太陽電池１の
出力電圧を増加させる（ステップ７）ことにより、太陽
電池（１）の出力電圧を常に最適動作電圧Ｖｏｐに維持
することができる。After the system is activated, the control unit 6 reads the output voltage V 1N of the solar cell 1 and the output voltage V 2N of the DC / DC converter 4 in each sampling cycle (step 1).
It is judged whether or not it is the optimum operating voltage Vop setting mode (step 2), and if it is the Vop setting mode, DC / D
The input current of the C converter 4 is increased. Solar cell 1
Output power is determined by the output voltage of the DC / DC converter 4, but since the output above the maximum output on the output characteristic curve cannot be obtained, the DC / DC converter 4 is not operated until the solar cell 1 reaches the optimum operating point. Output voltage increases, but when the optimum operating point is exceeded, the output voltage of the DC / DC converter 4 starts to decrease. Therefore, the output voltage of the solar cell 1 when the output voltage of the DC / DC converter 4 exhibits the maximum value becomes the optimum operating voltage Vop. The calculation unit 6a compares the output voltage V 2N of the DC / DC converter 4 with the output voltage V 2B at the previous sampling at each sampling cycle (step 3), and when V 2N <V 2B , changes to V 2B . The output voltage V 1B of the corresponding solar cell 1 is set as the optimum operating voltage Vop (step 4). Store Vop in the memory 6b,
After that, the current output voltages V 1N and Vop of the solar cell 1 are compared every sampling cycle (step 5), and V 1N > Vop
In the case of, the input current of the DC / DC converter 4 is increased to decrease the output voltage of the solar cell 1 (step 6), and V
When 1N <Vop, the output voltage of the solar cell (1) can be always maintained at the optimum operating voltage Vop by decreasing the input current and increasing the output voltage of the solar cell 1 (step 7).
【００１６】以上のように、システム起動直後に太陽電
池１の最適動作電圧Ｖｏｐの設定を行い、設定後は太陽
電池１の出力電圧を最適動作電圧Ｖｏｐになるように一
定電圧制御することにより太陽電池１の種類やセルの組
み合わせ方に関係なく容易に、比較的効率良く出力を得
ることができる。また、図５に示される電流検出手段２
７，２９を必要とせず、電圧検出手段７，８及び９，１
０については電圧値は相対値であれば良いので、電圧値
の補正など絶対的な精度を要求する必要がない。したが
って、安価に構成することができる。なお、図１では例
として昇圧型のＤＣ／ＤＣコンバータ４を示したが、入
力電流の制御が可能であればこれに限るものではない。As described above, the optimum operating voltage Vop of the solar cell 1 is set immediately after the system is started, and after the setting, the output voltage of the solar cell 1 is controlled to be the optimum operating voltage Vop by a constant voltage. The output can be easily and relatively efficiently obtained regardless of the type of the battery 1 and the combination of the cells. In addition, the current detection means 2 shown in FIG.
The voltage detecting means 7, 8 and 9, 1 are not required,
As for 0, since the voltage value may be a relative value, it is not necessary to request absolute accuracy such as correction of the voltage value. Therefore, the cost can be reduced. Although the step-up DC / DC converter 4 is shown as an example in FIG. 1, the invention is not limited to this as long as the input current can be controlled.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
最適動作電圧設定モードでは前記ＤＣ−ＤＣコンバータ
の入力電流を増加させながら前記ＤＣ−ＤＣコンバータ
の出力電圧が最大になった時の太陽電池出力電圧を最適
動作電圧に設定し、通常動作では太陽電池出力電圧を前
記設定された最適動作電圧に維持するように前記ＤＣ−
ＤＣコンバータを制御するようにしたから、従来のよう
に電流検出手段を必要とせず、２つの電圧検出手段につ
いては相対的な精度があればよく、よって、コストダウ
ンを図ることができる。しかも、最適動作電圧設定モー
ドにて最適動作電圧の設定を行うために、予め最適動作
電圧を正確に調べる必要がなく、種類やセルの組み合わ
せ方が異なる太陽電池に対してもソフトウエアなどの変
更を要さず、よって、種類やセルの組み合わせ方が異な
る太陽電池に対して事前準備の必要なしに使用すること
ができる。As described above, according to the present invention,
In the optimum operating voltage setting mode, the solar cell output voltage when the output voltage of the DC-DC converter is maximized is set to the optimum operating voltage while increasing the input current of the DC-DC converter, and in the normal operation, the solar cell is set. In order to maintain the output voltage at the set optimum operating voltage, the DC-
Since the DC converter is controlled, the current detecting means is not required unlike the conventional case, and the two voltage detecting means need only have the relative accuracy, and thus the cost can be reduced. Moreover, in order to set the optimum operating voltage in the optimum operating voltage setting mode, it is not necessary to accurately check the optimum operating voltage in advance, and the software etc. can be changed even for solar cells with different types and cell combinations. Therefore, it can be used for solar cells of different types and combinations of cells without any preparation.
【図１】本発明の実施の一形態である太陽光発電制御装
置を含む太陽光発電システムのシステム構成を示すブロ
ック図である。FIG. 1 is a block diagram showing a system configuration of a photovoltaic power generation system including a photovoltaic power generation control device according to an embodiment of the present invention.
【図２】本発明の実施の一形態である制御部の詳細を示
すブロック図である。FIG. 2 is a block diagram showing details of a control unit that is an embodiment of the present invention.
【図３】図１の制御部の動作を示すフローチャートであ
る。FIG. 3 is a flowchart showing an operation of a control unit in FIG.
【図４】太陽電池のＩ−Ｖ特性及び出力特性を示す図で
ある。FIG. 4 is a diagram showing an IV characteristic and an output characteristic of a solar cell.
【図５】従来の太陽光発電システムの一例のシステム構
成を示すブロック図である。FIG. 5 is a block diagram showing a system configuration of an example of a conventional photovoltaic power generation system.
【図６】従来の太陽光発電システムの他の例のシステム
構成を示すブロック図である。FIG. 6 is a block diagram showing a system configuration of another example of the conventional solar power generation system.
１ 太陽電池 ２ 逆接防止ダイオード ３ 平滑コンデンサ ４ ＤＣ−ＤＣコンバータ ５ 負荷 ６ 制御部 ６ａ 演算部 ６ｂ メモリ ６ｃ ＰＷＭパルス発生器 ７，９ 電圧検出器 ８，１０ Ａ／Ｄ変換器 ＣＮ 太陽光発電制御装置 DESCRIPTION OF SYMBOLS 1 Solar cell 2 Reverse connection prevention diode 3 Smoothing capacitor 4 DC-DC converter 5 Load 6 Control part 6a Calculation part 6b Memory 6c PWM pulse generator 7, 9 Voltage detector 8, 10 A / D converter CN Solar power generation control device
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０２Ｍ 3/155 Ｈ０１Ｌ 31/04 Ｒ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location H02M 3/155 H01L 31/04 R
Claims (2)
するＤＣ−ＤＣコンバータの入力電流を増減させること
によって、太陽電池の最適動作点制御を行う太陽光発電
制御装置において、最適動作電圧設定モードでは前記Ｄ
Ｃ−ＤＣコンバータの入力電流を増加させながら前記Ｄ
Ｃ−ＤＣコンバータの出力電圧が最大になった時の太陽
電池出力電圧を最適動作電圧に設定し、通常動作では太
陽電池出力電圧を前記設定された最適動作電圧に維持す
るように前記ＤＣ−ＤＣコンバータを制御するようにし
たことを特徴とする太陽光発電制御装置。1. A photovoltaic power generation controller for performing optimal operating point control of a solar cell by increasing or decreasing an input current of a DC-DC converter that receives output power of the solar cell and supplies it to a load. In the mode D
While increasing the input current of the C-DC converter, the D
The DC-DC is set so that the output voltage of the solar cell when the output voltage of the C-DC converter becomes maximum is set to the optimum operating voltage, and the solar cell output voltage is maintained at the set optimum operating voltage in the normal operation. A photovoltaic power generation control device characterized by controlling a converter.
する、入力電流増減機能を有するＤＣ−ＤＣコンバータ
に、入力電流を増減させるための制御信号を与えること
によって、太陽電池の最適動作点制御を行う太陽光発電
制御装置において、サンプリング周期毎に太陽電池の出
力電圧を検出する第１の電圧検出手段と、サンプリング
周期毎に前記ＤＣ−ＤＣコンバータの出力電圧を検出す
る第２の電圧検出手段と、最適動作電圧設定モードでは
前記ＤＣ−ＤＣコンバータの入力電流を増加させながら
前記ＤＣ−ＤＣコンバータの出力電圧が最大になった時
の太陽電池出力電圧を最適動作電圧に設定し、通常動作
では太陽電池出力電圧を前記設定された最適動作電圧に
維持するように前記ＤＣ−ＤＣコンバータを制御する制
御手段と、前記第１及び第２の電圧検出手段により検出
された出力電圧及び前記制御手段により設定された最適
動作電圧を記憶する記憶手段とを具備したことを特徴と
する太陽光発電制御装置。2. An optimum operating point of the solar cell by giving a control signal for increasing or decreasing the input current to a DC-DC converter having an input current increasing / decreasing function, which receives the output power of the solar cell and supplies it to a load. In a photovoltaic power generation control device for controlling, first voltage detection means for detecting an output voltage of a solar cell in each sampling cycle, and second voltage detection for detecting an output voltage of the DC-DC converter in each sampling cycle. In the optimum operating voltage setting mode, the solar cell output voltage when the output voltage of the DC-DC converter is maximized is set to the optimum operating voltage while increasing the input current of the DC-DC converter, and the normal operation is performed. Then, control means for controlling the DC-DC converter so as to maintain the solar cell output voltage at the set optimum operating voltage, and the first means. And a storage unit that stores the output voltage detected by the second voltage detection unit and the optimum operating voltage set by the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07248272A JP3091400B2 (en) | 1995-09-04 | 1995-09-04 | Solar power generation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07248272A JP3091400B2 (en) | 1995-09-04 | 1995-09-04 | Solar power generation control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0973328A true JPH0973328A (en) | 1997-03-18 |
| JP3091400B2 JP3091400B2 (en) | 2000-09-25 |
Family
ID=17175663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07248272A Expired - Fee Related JP3091400B2 (en) | 1995-09-04 | 1995-09-04 | Solar power generation control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3091400B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000112545A (en) * | 1998-09-30 | 2000-04-21 | Daihen Corp | Photovoltaic power generation system |
| WO2003061104A1 (en) * | 2002-01-16 | 2003-07-24 | Toyota Jidosha Kabushiki Kaisha | Voltage converter control apparatus, voltage conversion method, storage medium, program, drive system, and vehicle having the drive system |
| JP2005115441A (en) * | 2003-10-03 | 2005-04-28 | Nagano Japan Radio Co | Photovoltaic generation apparatus |
| JP2006040931A (en) * | 2004-07-22 | 2006-02-09 | Nagano Japan Radio Co | Apparatus for generating solar light power |
| WO2006048978A1 (en) * | 2004-11-02 | 2006-05-11 | Matsushita Electric Industrial Co., Ltd. | Power supply |
| US7148650B1 (en) * | 2005-06-22 | 2006-12-12 | World Water & Power Corp. | Maximum power point motor control |
| JP2009502107A (en) * | 2005-07-20 | 2009-01-22 | エコソル ソーラー テクノロジーズ，インコーポレイテッド | Devices that use photovoltaic output |
| JP2011083060A (en) * | 2009-10-02 | 2011-04-21 | Panasonic Electric Works Co Ltd | Apparatus for optimizing power supply of electric power supply system |
| WO2011148828A1 (en) * | 2010-05-28 | 2011-12-01 | 太陽誘電株式会社 | Power conversion device |
| JP2013069225A (en) * | 2011-09-26 | 2013-04-18 | Toshiba Lighting & Technology Corp | Dc power supply system and lighting apparatus |
| KR101434789B1 (en) * | 2013-04-30 | 2014-08-26 | 서울대학교산학협력단 | Photovoltaic apparatus and controlling method for maximizing power efficiency of the same |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000112545A (en) * | 1998-09-30 | 2000-04-21 | Daihen Corp | Photovoltaic power generation system |
| WO2003061104A1 (en) * | 2002-01-16 | 2003-07-24 | Toyota Jidosha Kabushiki Kaisha | Voltage converter control apparatus, voltage conversion method, storage medium, program, drive system, and vehicle having the drive system |
| US7199537B2 (en) | 2002-01-16 | 2007-04-03 | Toyota Jidosha Kabushiki Kaisha | Voltage converter control apparatus, and method |
| CN100409552C (en) * | 2002-01-16 | 2008-08-06 | 丰田自动车株式会社 | Voltage converter control apparatus, voltage conversion method, storage medium, program, drive system, and vehicle having the drive system |
| JP2005115441A (en) * | 2003-10-03 | 2005-04-28 | Nagano Japan Radio Co | Photovoltaic generation apparatus |
| JP4528574B2 (en) * | 2004-07-22 | 2010-08-18 | 長野日本無線株式会社 | Solar power plant |
| JP2006040931A (en) * | 2004-07-22 | 2006-02-09 | Nagano Japan Radio Co | Apparatus for generating solar light power |
| WO2006048978A1 (en) * | 2004-11-02 | 2006-05-11 | Matsushita Electric Industrial Co., Ltd. | Power supply |
| US7719252B2 (en) | 2004-11-02 | 2010-05-18 | Panasonic Corporation | Power supply |
| US7148650B1 (en) * | 2005-06-22 | 2006-12-12 | World Water & Power Corp. | Maximum power point motor control |
| JP2009502107A (en) * | 2005-07-20 | 2009-01-22 | エコソル ソーラー テクノロジーズ，インコーポレイテッド | Devices that use photovoltaic output |
| JP2011083060A (en) * | 2009-10-02 | 2011-04-21 | Panasonic Electric Works Co Ltd | Apparatus for optimizing power supply of electric power supply system |
| WO2011051765A1 (en) * | 2009-10-02 | 2011-05-05 | パナソニック電工株式会社 | Power source optimisation device for electric power supply system |
| WO2011148828A1 (en) * | 2010-05-28 | 2011-12-01 | 太陽誘電株式会社 | Power conversion device |
| JP5369234B2 (en) * | 2010-05-28 | 2013-12-18 | 太陽誘電株式会社 | Power converter |
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| Publication number | Publication date |
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| JP3091400B2 (en) | 2000-09-25 |
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