| The energy issue is already an urgent issue in today's society.In the past 200 years,human energy systems based on chemical fuels such as coal,oil and natural gas have also been in jeopardy.Based on the research of existing solar power generation technology,this paper designs a set of solar energy supply system based on the knowledge,combined with high-power charge and discharge technology,single-chip technology and cloud server technology.The home solar energy supply system consists of two parts: the charge and discharge circuit and the communication software part.The charging and discharging circuit is composed of a solar charging controller and an inverter.The solar charging controller converts the voltage on the solar photovoltaic panel(PV panel)into a stable DC voltage for charging the battery,and the inverter adopts a full bridge inverter.The method converts the voltage of the 48 V battery into a 220 V pure sinusoidal AC voltage for powering the household appliance.The software part mainly consists of the MCU part,the host computer part and the cloud server part.The MCU is developed by STM32F407.The main function is to collect the voltage and current of the hardware circuit.The upper part is completed by C++ on the Qt platform.The function is to display the data collected by the MCU to the PC;the cloud server is built on the Tencent cloud.It mainly functions as a message forwarding function,and can send the control instruction of the mobile phone APP to the hardware circuit to control the opening and closing state of the hardware circuit.After building a home solar energy system,the entire system was tested,key data was recorded and critical waveform analysis was performed.The test result is that the solar charger can reach a charging power of 250 W in one way,and the inverter can reach a total power of 4k W.The upper computer can normally display the voltage and current data collected by the hardware circuit,and the two ends of the communication can correctly connect the data. |
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