Photovoltaic control system

Abstract

The invention relates to a photovoltaic control system, which comprises a solar panel, a motor, a voltage current sampling circuit, a microcontroller and a motor driver, wherein the solar panel is used to receive solar energy, the motor is connected with the solar panel, when the motor rotates, the solar panel can be driven to rotate, the input end of the voltage current sampling circuit is connected with the solar panel to receive voltage current signals which are output by the solar panel, the input end of the microcontroller is connected with the output end of the voltage current sampling circuit to receive the voltage current signals which are collected by the voltage current sampling circuit and produce a control signal according to the size of the voltage current signals which are received, the input end of the motor driver is connected with the output end of the microcontroller to receive the control signals which are output by the microcontroller, the output end of the motor driver is connected with the motor, the motor driver drives the motor to rotate according to the control signals, which leads the solar panel and a sunlight incident angle to be approximately vertical.

Description

technical field [0001] The invention relates to a photovoltaic control system. Background technique [0002] Solar energy is a clean and efficient renewable energy. At present, the most commonly used method of solar energy is to convert solar energy into electrical energy through solar panels to charge batteries. In order to maximize the power output from solar panels to batteries, generally between the batteries and solar panels A photovoltaic controller with a maximum power point tracking (Maximum Power Point Tracking, MPPT) function is set in between. [0003] Such as figure 1 As shown, it is a functional block diagram of an existing photovoltaic control system in which a solar panel 100 uses a photovoltaic controller 200 to charge a storage battery 300. The photovoltaic controller 200 includes a voltage and current sampling circuit 220 and an MPPT control circuit 240. Wherein, the solar panel 100 outputs a voltage and current signal after receiving solar energy, the v...

AI Technical Summary

Problems solved by technology

[0004] However, the photovoltaic controller of the existing photovoltaic control system can only calculate the voltage and current signals output by the solar panel according to the corresponding MPPT control law to achieve the maximum power output, but cannot control the incident angle between the solar panel and sunlight to maximize the power output. The efficiency of solar panels receiving solar energy can be adjusted optimally, so the output power of solar panels cannot be maximized.

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