With the development of china's economy and the improvement of people's living standards, "inverter technology" has become the mainstream technology in white goods. Inverter air conditioners, inverter washing machines, and inverter refrigerators are ubiquitous. Energy-saving, high efficiency, comfort, and ultra-quiet operation have become the main competitive advantages of inverter white goods. Along with the popularization of inverter technology, the demand for power components in white goods has also risen rapidly.