Its main function is to provide continuous and stable power supply to ensure that critical equipment and systems can operate normally under various circumstances. UPS has important applications in many fields, and in industrial automation control systems, UPS is used to protect precision instruments and equipment. Data center and office equipment, UPS provides a stable power supply in equipment such as data centers, office computers, financial computers, and data servers to prevent equipment failure in the case of power outages or trips. In the medical industry, UPS is used to ensure the continuous operation of medical equipment and ensure that the power supply is not affected during the treatment of patients. A general UPS system consists of a battery and an inverter using an IGBT. High reliability and high efficiency of the power supply are required.