KR102529302B1 - Power Conditioning System for Photovoltaic Generation Optimizing Maximum Power Point Using Weather Measurement - Google Patents
Power Conditioning System for Photovoltaic Generation Optimizing Maximum Power Point Using Weather Measurement Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
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- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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Abstract
개시되는 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치는, 태양광 패널에서 생산되는 직류 전력을 교류 전력으로 변환하여 한전계통전력선에 배전하는 변환부; 상기 태양광 패널이 설치된 설치지역의 기상정보를 측정하는 측정부; 상기 기상정보를 기반으로하여 상기 태양광 패널의 전류-전압(I-V) 특성에 영향을 미치는 최적화 제어인자를 생성하는 제어인자 생성부; 상기 최적화 제어인자를 기반으로하여 제어주기 및 변량전압을 최적화하는 최적화부; 및 상기 제어주기 및 상기 변량전압을 기반으로하여 최대전력점추적(MPPT, Maximum Power Point Tracking) 제어방법으로 상기 변환부의 작동을 제어하는 MPPT 제어부;를 포함한다.A power conversion device for photovoltaic power generation that optimizes a maximum power point using environmental measurements disclosed herein includes a conversion unit that converts DC power generated from a solar panel into AC power and distributes the power to a power line of the Korea Electricity System; a measuring unit measuring meteorological information of an installation area in which the solar panel is installed; a control factor generation unit generating an optimization control factor affecting current-voltage (I-V) characteristics of the solar panel based on the meteorological information; an optimization unit that optimizes a control period and a variable voltage based on the optimization control factor; and an MPPT control unit for controlling the operation of the conversion unit using a Maximum Power Point Tracking (MPPT) control method based on the control period and the variable voltage.
Description
본 발명(Disclosure)은, 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치에 관한 것으로서, 구체적으로 MPPT제어의 두 인자인 제어주기 및 변량전압을 측정된 기상정보에 따라 갱신하고 최적화하여 태양광 패널의 직류 전력을 교류 전력의 변환 효율을 향상시킬 수 있는 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치에 관한 것이다.The present invention (Disclosure) relates to a power converter for photovoltaic power generation that optimizes a maximum power point using environmental measurements, and specifically, updates control cycle and variable voltage, two factors of MPPT control, according to measured weather information. It relates to a power converter for solar power generation that optimizes the maximum power point by using environmental measurements that can improve the conversion efficiency of AC power from direct current power of a solar panel by optimizing it.
여기서는, 본 발명에 관한 배경기술이 제공되며, 이들이 반드시 공지기술을 의미하는 것은 아니다(This section provides background information related to the present disclosure which is not necessarily prior art).Here, background art related to the present invention is provided, and they do not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).
여기서는, 본 발명에 관한 배경기술이 제공되며, 이들이 반드시 공지기술을 의미하는 것은 아니다(This section provides background information related to the present disclosure which is not necessarily prior art).Here, background art related to the present invention is provided, and they do not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).
태양광 발전 시스템은 빛을 전기에너지로 변환하는 광-전 변환 반도체 소자인 솔라셀을 이용하여, 태양광을 전기 에너지로 변환하는 기술이다.A photovoltaic power generation system is a technology that converts sunlight into electrical energy by using a solar cell, which is a light-to-electrical conversion semiconductor device that converts light into electrical energy.
솔라셀은, 태양광이 수광되면 전류를 생성하고, 다수개의 솔라셀을 직병렬로 연결한 태양광 패널로부터 대량의 전류를 전력 저장장치에 저장함으로써, 고전력 에너지를 확보할 수 있다. A solar cell can secure high-power energy by generating current when sunlight is received and storing a large amount of current in a power storage device from a solar panel in which a plurality of solar cells are connected in series and parallel.
솔라셀이 태양광을 수광하여 생산하는 전류는 직류 전류로서, 직병렬 회로 구조를 손쉽게 형성할 수 있는 장점이 있다. The current produced by the solar cell by receiving sunlight is direct current, and has the advantage of being able to easily form a series/parallel circuit structure.
그러나, 실생활에 사용하는 한전계통전력선은, 교류 전류를 사용한다. However, KEPCO power lines used in real life use alternating current.
태양광 패널 이용한 태양광 발전으로 생산된 전력을 실생활에 이용하기 위해서는, 생산된 직류 전력을 교류 전력으로 변환하는 전력변환장치가 필수적이다.In order to use the power produced by photovoltaic power generation using a solar panel in real life, a power conversion device that converts the produced direct current power into alternating current power is essential.
태양광 발전에 사용되는 일반적인 전력변환장치는, DC-DC 컨버터와 DC-AC인버터의 조합으로 형성되며, 최대전력점추적(MPPT, Maximum Power Point Tracking) 제어를 통하여, DC전력을 AC전력으로 변환한다. A typical power converter used in photovoltaic power generation is formed by a combination of a DC-DC converter and a DC-AC inverter, and converts DC power into AC power through maximum power point tracking (MPPT) control. do.
MPPT제어는, 온도 및 태양광의 조사량에 따라 달라지는 태양광 패널을 형성하는 솔라셀의 전류-전압 특성(I-V Characteristics) 및 이에 따라 최대전력점을 추적한다.MPPT control tracks the current-voltage characteristics (I-V Characteristics) of a solar cell forming a solar panel that varies depending on the temperature and amount of sunlight irradiation and, accordingly, the maximum power point.
이에 따라 온도 및 태양광 조사량에 상관없이, 태양광 패널에서 생산되는 직류 전력이 최대출력으로 전력 저장장치에 저장될 수 있도록 한다.Accordingly, regardless of the temperature and the amount of sunlight irradiation, DC power generated from the solar panel can be stored in the power storage device at maximum output.
일반적인 MPPT제어 알고리즘은, 최대 전력 운전점을 찾아가는 경사법에 기초한다. A typical MPPT control algorithm is based on a gradient method to find the maximum power operating point.
즉, 특정한 제어주기마다, 태양광 패널에서 직류 전류가 출력되는 출력단자의 전압을 특정한 제어전압으로 낮추거나 높인다. That is, for each specific control cycle, the voltage of the output terminal through which DC current is output from the solar panel is lowered or increased to a specific control voltage.
이때, 제어주기 시점의 온도 및 태양광 조사량에 의해 결정되는 I-V 특성에 따라 결정되는 출력전력이 출력 단자를 통하여 출력된다.At this time, output power determined according to the I-V characteristic determined by the temperature at the time of the control cycle and the amount of sunlight irradiation is output through the output terminal.
출력전력이 최대값을 갖도록 제어주기마다 제어전압을 가변함으로써, MPPT제어를 수행할 수 있다. MPPT control can be performed by varying the control voltage for each control cycle so that the output power has a maximum value.
상술한 MPPT제어의 두 가지 인수는 제어주기와 제어전압이다.The two factors of the above-mentioned MPPT control are the control cycle and the control voltage.
이상적인 경우, 순차적인 제어시점 사이의 제어주기는 짧을 수록, 순차적인 제어전압 사이의 변량전압은 작을수록, MPPT제어의 정밀도와 반응성이 높아진다. In an ideal case, the shorter the control cycle between sequential control points and the smaller the variable voltage between sequential control voltages, the higher the precision and responsiveness of MPPT control.
그러나, 변량전압이 크면 일사량 변화가 클때 빠르게 응동할수 있으나, 일사량 변화가 없거나 작을 때는 전력 생산의 손실이 발생할 수 있다.However, if the variable voltage is large, it can respond quickly when the solar radiation change is large, but when there is no or small solar radiation change, power generation loss may occur.
또한 제어주기가 짧으면, 변량전압을 작게 설정해도 동특성을 빠르게 할 수 있으나, 전력변환장치의 시간 자원을 소모하여 제어 특성을 악회시키는 문제점이 있다.In addition, if the control cycle is short, the dynamic characteristics can be increased even if the variable voltage is set small, but there is a problem in that the control characteristics are deteriorated by consuming time resources of the power converter.
따라서, 효율적인 태양광 발전 시스템을 위해서, MPPT 제어의 주요한 두 인자인 제어주기 및 변량전압을 최적화 할 수 있는 전력변환장치가 요구된다.Therefore, for an efficient photovoltaic power generation system, a power converter capable of optimizing the control cycle and variable voltage, which are two major factors of MPPT control, is required.
본 발명(Disclosure)은, 최대전력점 변화를 예측할 수 있는 태양광 패널 설치지역의 기상정보를 측정하여 MPPT제어를 최적화 함으로써, 전력 변환효율을 개선할 수 있는 환경측정를 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치의 제공을 일 목적으로 한다.The present invention (Disclosure) optimizes the MPPT control by measuring the meteorological information of the solar panel installation area that can predict the maximum power point change, thereby optimizing the maximum power point using environmental measurements that can improve the power conversion efficiency. One purpose is to provide a power converter for photovoltaic power generation.
여기서는, 본 발명의 전체적인 요약(Summary)이 제공되며, 이것이 본 발명의 외연을 제한하는 것으로 이해되어서는 아니 된다(This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).
상기한 과제의 해결을 위해, 본 발명을 기술하는 여러 관점들 중 어느 일 관점(aspect)에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치는, 태양광 패널에서 생산되는 직류 전력을 교류 전력으로 변환하여 한전계통전력선에 배전하는 변환부; 상기 태양광 패널이 설치된 설치지역의 기상정보를 측정하는 측정부; 상기 기상정보를 기반으로하여 상기 태양광 패널의 전류-전압(I-V) 특성에 영향을 미치는 최적화 제어인자를 생성하는 제어인자 생성부; 상기 최적화 제어인자를 기반으로하여 제어주기 및 변량전압을 최적화하는 최적화부; 및 상기 제어주기 및 상기 변량전압을 기반으로하여 최대전력점추적(MPPT, Maximum Power Point Tracking) 제어방법으로 상기 변환부의 작동을 제어하는 MPPT 제어부;를 포함한다.In order to solve the above problems, a power converter for photovoltaic power generation that optimizes the maximum power point using environmental measurement according to any one of the various aspects describing the present invention is produced from a solar panel. a conversion unit for converting DC power into AC power and distributing it to the KEPCO power line; a measuring unit measuring meteorological information of an installation area in which the solar panel is installed; a control factor generation unit generating an optimization control factor affecting current-voltage (I-V) characteristics of the solar panel based on the meteorological information; an optimization unit that optimizes a control period and a variable voltage based on the optimization control factor; and an MPPT control unit for controlling the operation of the conversion unit using a Maximum Power Point Tracking (MPPT) control method based on the control period and the variable voltage.
본 발명의 일 관점(aspect)에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치에서 상기 측정부는, 상기 설치지역의 일조량 변화를 측정하는 일조량 센서; 및 상기 설치지역의 온도변화를 측정하는 온도 센서;을 포함할 수 있다.In the power converter for photovoltaic power generation for optimizing a maximum power point using environmental measurement according to one aspect of the present invention, the measurement unit includes: a sunlight sensor for measuring a change in the amount of sunlight in the installation area; and a temperature sensor for measuring a change in temperature of the installation area.
본 발명의 일 관점(aspect)에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치에서 상기 일조량 센서는, 태양의 형상을 측정하여 태양 윤곽선의 선명도를 추출하는 이미지 센서;를 포함할 수 있다.In the power converter for photovoltaic power generation for optimizing a maximum power point using environmental measurements according to one aspect of the present invention, the sunlight sensor includes an image sensor for measuring the shape of the sun and extracting a sharpness of the sun's outline; can include
본 발명의 일 관점(aspect)에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치에서 상기 측정부는, 상기 이미지 센서가 태양을 추적할 수 이도록 하는 태양추적부;를 더 포함할 수 있다.In the power converter for photovoltaic power generation that optimizes the maximum power point using environmental measurement according to one aspect of the present invention, the measuring unit further includes a sun tracking unit that allows the image sensor to track the sun. can include
본 발명의 일 관점(aspect)에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치에서 상기 일조량 센서는, 상기 설치지역의 대기의 광투과도를 측정하는 투과도 센서;를 포함할 수 있다.In the power converter for photovoltaic power generation that optimizes the maximum power point by using environmental measurement according to one aspect of the present invention, the sunlight sensor includes a transmittance sensor for measuring light transmittance of the atmosphere in the installation area. can do.
본 발명에 따르면, 최대전력점 변화를 예측할 수 있는 태양광 패널 설치 지역의 기상정보를 측정하여 MPPT제어의 두 인자인 제어주기 및 변량전압을 최적화하여, 태양광 발전에서 전력 변환효율을 개선할 수 있다. According to the present invention, it is possible to improve the power conversion efficiency in solar power generation by optimizing the control cycle and variable voltage, which are two factors of MPPT control, by measuring weather information of the solar panel installation area that can predict the maximum power point change. there is.
도 1은 본 발명에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치의 일 실시형태를 설명하는 도면.1 is a view for explaining an embodiment of a power conversion device for photovoltaic power generation that optimizes a maximum power point using environmental measurement according to the present invention.
이하, 본 발명에 따른 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치를 구현한 실시형태를 도면을 참조하여 자세히 설명한다.Hereinafter, an embodiment in which a power converter for photovoltaic power generation that optimizes a maximum power point using environmental measurement according to the present invention is implemented will be described in detail with reference to the drawings.
다만, 본 발명의 본질적인(intrinsic) 기술적 사상은 이하에서 설명되는 실시형태에 의해 그 실시 가능 형태가 제한된다고 할 수는 없고, 본 발명의 본질적인(intrinsic) 기술적 사상에 기초하여 통상의 기술자에 의해 이하에서 설명되는 실시형태를 치환 또는 변경의 방법으로 용이하게 제안될 수 있는 범위를 포섭함을 밝힌다. However, the essential (intrinsic) technical idea of the present invention cannot be said to be limited by the embodiments described below, and based on the essential (intrinsic) technical idea of the present invention, a person skilled in the art below It is revealed that the embodiments described in include the range that can be easily proposed as a method of substitution or change.
또한, 이하에서 사용되는 용어는 설명의 편의를 위하여 선택한 것이므로, 본 발명의 본질적인(intrinsic) 기술적 사상을 파악하는 데 있어서, 사전적 의미에 제한되지 않고 본 발명의 기술적 사상에 부합되는 의미로 적절히 해석되어야 할 것이다. In addition, since the terms used below are selected for convenience of description, in grasping the essential (intrinsic) technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted in a meaning consistent with the technical idea of the present invention. It should be.
도 1은 본 발명에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치의 일 실시형태를 설명하는 도면.1 is a view for explaining an embodiment of a power conversion device for photovoltaic power generation that optimizes a maximum power point using environmental measurement according to the present invention.
도 1을 참조하면, 본 실시형태에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치는, 변환부(120), 측정부(110), 제어인자 생성부(130), 최적화부(140) 및 MPPT제어부(150)를 포함한다. Referring to FIG. 1 , a power converter for photovoltaic power generation for optimizing a maximum power point using environmental measurement according to the present embodiment includes a
변환부(120)는 태양광 패널(10)에서 생산되는 직류 전력을 교류 전력으로 변환하여 한전계통전력선(20)에 배전한다.The
측정부(110)는 태양광 패널(10)이 설치된 설치지역의 기상정보(111)를 측정한다.The
제어인자 생성부(130)는 기상정보(111)를 기반으로하여 태양광 패널(10)의 전류-전압(I-V) 특성에 영향을 미치는 최적화 제어인자(131)를 생성한다.The control
최적화부(140)는 최적화 제어인자(131)를 기반으로하여 제어주기(142) 및 변량전압(141)을 최적화한다.The
MPPT제어부(150)는 제어주기(142) 및 변량전압(141)을 기반으로하여 최대전력점추적(MPPT, Maximum Power Point Tracking) 제어방법으로 변환부(120)의 작동을 제어한다.The
이에 따라 본 발명에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치는, 태양광 패널이 설치된 지역의 기상정보를 실시간으로 측정하여, 제어주기 및 변량전압을 최적화함으로써, 전력 변환 효율을 개선할 수 있다. Accordingly, the power converter for photovoltaic power generation that optimizes the maximum power point using environmental measurement according to the present invention measures the weather information of the area where the solar panel is installed in real time and optimizes the control cycle and variable voltage, Power conversion efficiency can be improved.
또한 본 실시형태에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치에서 측정부(110)는, 설치지역의 일조량 변화를 측정하는 일조량 센서 및 설치지역의 온도변화를 측정하는 온도 센서을 포함한다. In addition, in the power converter for photovoltaic power generation that optimizes the maximum power point using environmental measurement according to the present embodiment, the
이때 일조량 센서는, 태양의 형상을 측정하여 태양 윤곽선의 선명도를 추출하는 이미지 센서를 포함할수 있다. In this case, the sunlight sensor may include an image sensor that measures the shape of the sun and extracts the sharpness of the sun's contour.
일조량을 결정하는 요인들은 다양한다. 구름이나 안개 또는 미세먼지등이 있다. 그러나 결국 태양과 태양광 패널 사이의 대기 상태에 따라 결정된다.There are various factors that determine the amount of sunlight. There are clouds, fog, or fine dust. But in the end, it is determined by the atmospheric conditions between the sun and the solar panels.
따라서 태양 형상의 윤곽선이 선명하면 태양과 태양광 패널 사이의 대기의 투명도가 높다는 것을 의미하고, 이는 결국 일조량이 많다는 것을 의미한다. Therefore, if the outline of the sun shape is clear, it means that the transparency of the atmosphere between the sun and the solar panel is high, which in turn means that there is a lot of sunlight.
이는 종래의 일조량 센서가 일조량에 영향을 미치는 다양한 요인들을 모두 고려하지 못하는 단점을 극복할 수 있는 장점을 가진다. This has the advantage of being able to overcome the disadvantage that the conventional sunlight sensor cannot consider all of the various factors affecting the amount of sunlight.
또한 본 실시형태에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치에서 측정부(110)는, 이미지 센서가 태양을 추적할 수 이도록 하는 태양추적부를 더 포함한다. In addition, in the power converter for photovoltaic power generation that optimizes the maximum power point using environmental measurement according to the present embodiment, the
태양추적부를 더 포함함으로써, 이미지 센서는 태양광의 입사각도에 상관없이 동일한 태양 윤곽선을 추출할 수 있다.By further including a sun tracker, the image sensor may extract the same sun contour regardless of an incident angle of sunlight.
또한 본 실시형태에 따른 환경측정을 이용하여 최대전력점을 최적화하는태양광 발전용 전력변환장치에서 일조량 센서는, 설치지역의 대기의 광투과도를 측정하는 투과도 센서를 포함한다.In addition, in the power conversion device for photovoltaic power generation that optimizes the maximum power point by using environmental measurement according to the present embodiment, the sunlight sensor includes a transmittance sensor that measures light transmittance of the atmosphere in the installation area.
상술한 이미지 센서는 태양과 태양광 패널 사이의 대기 상태를 전반적으로 측정한다. 그러나 안개 또는 미세먼지와 같이 낮은 농도의 대기 불순물의 정확도가 낮을 수 있다. The image sensor described above measures the overall atmospheric condition between the sun and the solar panel. However, accuracy may be low for low concentrations of atmospheric impurities such as fog or particulate matter.
그러나 낮은 농도의 대기 불순물이라도 태양광 패널에 투과되는 광량에 큰 영향을 미칠 수 있다. 투과도 센서를 이용함으로써, 대양한 대기 상태를 측정할 수 있다. However, even low concentrations of atmospheric impurities can significantly affect the amount of light transmitted through a solar panel. By using a permeability sensor, it is possible to measure oceanic atmospheric conditions.
Claims (5)
상기 태양광 패널이 설치된 설치지역의 기상정보를 측정하는 측정부;
상기 기상정보를 기반으로하여 상기 태양광 패널의 전류-전압(I-V) 특성에 영향을 미치는 최적화 제어인자를 생성하는 제어인자 생성부;
상기 최적화 제어인자를 기반으로하여 제어주기 및 변량전압을 최적화하는 최적화부; 및
상기 제어주기 및 상기 변량전압을 기반으로하여 최대전력점추적(MPPT, Maximum Power Point Tracking) 제어방법으로 상기 변환부의 작동을 제어하는 MPPT 제어부;를 포함하고,
상기 측정부는,
상기 설치지역의 일조량 변화를 측정하는 일조량 센서; 및 상기 설치지역의 온도변화를 측정하는 온도 센서;을 포함하고
상기 일조량 센서는,
태양의 형상을 측정하여 태양 윤곽선의 선명도를 추출하는 이미지 센서; 및 상기 설치지역의 대기의 광투과도를 측정하는 투과도 센서;를 더 포함하고,
상기 측정부는,
상기 이미지 센서가 태양을 추적할 수 있도록 하는 태양추적부;를 더 포함하는 환경측정을 이용하여 최대전력점을 최적화하는 태양광 발전용 전력변환장치.
A conversion unit for converting DC power generated from the solar panel into AC power and distributing it to the power line of the Korea Electricity System;
a measuring unit measuring meteorological information of an installation area in which the solar panel is installed;
a control factor generating unit generating an optimization control factor affecting current-voltage (IV) characteristics of the solar panel based on the meteorological information;
an optimization unit that optimizes a control period and a variable voltage based on the optimization control factor; and
An MPPT control unit for controlling the operation of the conversion unit using a Maximum Power Point Tracking (MPPT) control method based on the control period and the variable voltage;
The measuring unit,
a sunlight sensor for measuring a change in the amount of sunlight in the installation area; And a temperature sensor for measuring the temperature change of the installation area; and
The sunlight sensor,
An image sensor that measures the shape of the sun and extracts the sharpness of the sun's outline; And a transmittance sensor for measuring the light transmittance of the atmosphere in the installation area; further comprising,
The measuring unit,
A power converter for photovoltaic power generation that optimizes a maximum power point using environment measurement, further comprising: a sun tracking unit that enables the image sensor to track the sun.
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