Under the rising concept of sustainable development in the world, while responding to carbon neutrality, energy transformation is the goal of global common development. In recent years, offshore wind power has become the focus of renewable energy. While Taiwan's offshore wind power industry is about to catch up, mature European countries have begun to discuss the issue of decommissioning wind turbines.

Uninterruptible Power Supply (UPS) is a device that continuously provides backup AC power for electrical load devices and maintains the normal operation of electrical appliances when the power grid is abnormal. Uninterruptible power supply systems can be divided into online, offline, and line interactive. The power requirements of each field are different. How to choose a suitable one?