On the Design of Economical Domestic Solar Energy Inverter Power Supply

As an important part of the use of solar energy, solar photovoltaic generation is considered to be one of the most potential generation methods. Therefore, this thesis will take the design of domestic solar emergency lights for instance. In this design, the two-way hardware PWM modules, controlled by STC12C5A60S2 SCM (Single Chip Micyoco) natural number LUT (Look-up Table), will generate SPWM pulse signal. In the meantime, the single-phase full-bridge inverter will be driven by unipolar modulation scheme. By receiving filtering output by LC low pass filter, finally, the emergency light will get a stable 8V sine wave AC (Alternating Current). Additionally, the whole system can be connected to the external buttons and LCD (Liquid Crystal Display) screen. The buttons can be used to set the voltage and frequency of the power output. The LCD screen can display real-time input voltage, output current as well as the frequency of the output sine wave. Both of the buttons and LCD screen will greatly improve the safety and stability of the system.