Please select the most similar patent number from A, B, C and D. Which number is?
A maximum power point tracking device (2), and an assessment method for a solar cell module (10). A decline in maximum power point tracking efficiency within given conditions can be inhibited, and the output power of the solar cell module (10) is increased. The maximum power point tracking device (2) comprises: an MPPT control portion (3), capable of tracking the maximum power point with respect to voltage, current or power, and controlling the voltage, current or power corresponding to the maximum power point; an adjustment portion (4), capable of adjusting a load value of the MPPT control portion (3), when tracking the maximum power point, in correspondence with an action of the solar cell module (10) or an environment-related measurement value.
A: A Maximum Power Point Tracking (MPPT) method and device for a photovoltaic cell and a storage medium. The MPPT method for the photovoltaic cell comprises: obtaining multiple power points respectively corresponding to different duty ratios of an MPPT controller, and finding a first duty ratio corresponding to a power point having the maximum value in the multiple power points (S102); tracking a first maximum power point of the photovoltaic cell in a single peak way by using the first duty ratio as an initial value, wherein the first maximum power point is used as the maximum power value of the photovoltaic cell (S104); and after tracking of the first maximum power point, determining continually tracking in the single peak way according to predetermined conditions to obtain a second maximum power point, or starting to execute again from the first step, wherein the predetermined conditions comprise at least one of the following: time and power change amplitudes (S106). According to the MPPT method and device for the photovoltaic cell and the storage medium, the technical problem in the related art that the changed maximum power point of the photovoltaic cell cannot be accurately tracked is solved.
B: A touch control panel (100) and a touch control display device. The touch control panel (100) comprises a glass substrate (101), a solar cell panel (102) located at one side of the glass substrate (101) and comprising a plurality of solar cell modules (105), n first direction sensing lines (103) and m second direction sensing lines (104), which are used for transmitting electric energy converted by the solar cell panel (102), and a detection unit for detecting the current or voltage on each first direction sensing line (103) and each second direction sensing line (104) and determining a touch control region of a touch control object according to the change in the current or the voltage, wherein each of the n first direction sensing lines (103) and the m second direction sensing lines (104) will be connected in series along a corresponding solar cell module (105) in the direction, where m and n are positive integers. The touch control panel (100) reduces the number of conducting wire connections, thereby realizing the light weight of a touchscreen.
C: A photovoltaic inverter power carrier communications system, comprising a plurality of solar panels (101), a plurality of photovoltaic microinverters (102), a photovoltaic microinverter concentrator (103), a power line (104), and a control center (105); each photovoltaic microinverter (102) of the plurality of photovoltaic microinverters (102) is connected to a corresponding solar panel (101) and is used for collecting real-time status data and performance parameters of the solar panel (101); the photovoltaic microinverter concentrator (103) is connected to the photovoltaic microinverters (102) by means of the power line (104); the control center (105) is connected to the photovoltaic microinverter concentrator (103) and controls and manages the photovoltaic microinverters (102) connected to the photovoltaic microinverter concentrator (103). The communications system uses the power line (104) as a communications medium and acquires in real time information regarding the operating conditions of each photovoltaic microinverter (102), thus accomplishing intelligent management of the photovoltaic microinverters (102); furthermore, the invention does not require the laying of additional communications control lines and is easy to install and implement.
D: A photovoltaic power generation self-service sun tracking system. A solar cell panel assembly (1) is installed on a rotating shaft (2) through a bracket (4) and a bracket connecting plate (16), the rotating shaft (2) is connected to an output shaft of a seat-type speed reducer (5) through an axial flange, the seat-type speed reducer (5) is installed on a support (7) through a speed reducer base (12), a drive motor (15) is connected to the seat-type speed reducer (5) through a worm and gear drive converter (8) and drives same to operate, the electric power output end of the solar cell panel assembly (1) is connected to an inverter power generation system and a self-service power source generator, the perpendicular planes of the east and west sides of a plane of the solar cell panel assembly (1) are respectively provided with an angle light intensity sensor (6), the electric power output end of the self-service power source generator is respectively connected to a sun tracking processor and a 1° motor driver, the drive motor (15) is connected to the 1° motor driver in an electric control manner, and the angle light intensity sensors (6) and the 1° motor driver are connected to the sun tracking processor in a logic electric control manner. The system can effectively solve the problems of an unstable operating state, a short service life, a high system cost and a high operating cost of the existing self-adaptive sun tracking device.
Answer: A