AC  drive are widely used in various industries such as: petrochemicals, material transportation, power station, papermaking, mining, coal, transportation, metallurgy, building materials, and so on.
Electrical machinery is the leading source of power consumption in the country, and high-voltage and high-power motors are the largest consumers among such machinery. The use of frequency converters can ensure efficient and rational use of energy, greatly reduce resource loss and damage to the environment and achieve the effect of energy saving and environmental protection.