Some electrical appliances or devices that use electric motors, such as refrigerators, washing machines, electric drills, etc., require a very high current to propel during operation. If successful, only a small current is required to maintain their normal operation. Therefore, for inverters, there are concepts of continuous output power and peak output power. Continuous output power is the rated output power, with a typical peak output power of twice the rated output power. It is worth mentioning that the operating current of air conditioners, refrigerators, and other devices is equal to 3-9 times the normal operating current. It is necessary to have an inverter that can reach the peak power of electrical operation to ensure normal operation.