The 4000-watt sine wave inverter is an electric energy conversion device that converts direct current into alternating current. It completes the inverter task by turning on and off power semiconductor devices according to a specific law.
High-efficiency pure sine wave inverter The pure sine wave inverter includes a power input module, a pulse width modulation module connected to the power input module, a transformation, rectification and filtering module connected to the pulse width modulation module, and transformation and rectification The SPWM drive module connected to the filter module, the LC filter module connected to the SPWM drive module, and the sine wave output module connected to the LC filter module.
The main circuit of the inverter is a power conversion circuit composed of power switching devices. There are many types of main circuit structures. The main circuit forms are different under different input and output conditions. Each power conversion circuit has its advantages and disadvantages. In actual design, the most suitable circuit topology should be considered as the main circuit structure.
The voltage sampling module collects the input voltage of the power input module, and then the central processing module controls the display module to display the voltage value; the display module can also be used to display the output power, and the current sampling module collects the pulse width modulated current, The central processing module calculates the power and drives the display module to display the power.
The central processing module can also be used to detect whether the working status of each module in the entire pure sine wave inverter is normal. When the central processing module detects that a certain module is not working properly, it can drive the display module to display an error message.