Research on load model of VF based motor drive

VF (Variable Frequency) based motor drive, which occupies a large proportion in total power load, is growing up rapidly these years. It shall affect the load model of power system greatly, for their characteristic is quite different from that of traditional asynchronous motor drive. Firstly, both the simulation and physical experiment on VF motor are carried out with voltage drop disturbs, and the dynamic curves are obtained. Then, the parameters of static model and dynamic model are identified using the curves respectively. Finally, the two ways of modeling are compared, and the validity of both parameters is verified to each other.