The pure 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. Modern inverter technology is a science that studies the theory and application and design methods of inverter circuits. It is based on industrial electronics technology, semiconductor device technology, modern control technology, modern power electronics technology, pulse width modulation technology, semiconductor converter technology and A practical technology based on science such as magnetic materials, so the application of sine wave inverter runs through many fields of society and life.