Power Characteristics Analysis and Modeling Method of DFIG Wind Systems

Wind power generation technology is developing rapidly on a global scale. In many wind power generation systems, which we use most commonly is the double-fed wind power generation system. This paper mainly focuses on the power relationship, modeling and simulation of the double-fed wind power generation system. First, based on the equivalent circuit diagram, this paper analyses double-fed induction generation (DFIG) operation theory and DFIG power relationship. Then, builds the model of double-fed wind power generation system. Finally, use PSCAD to simulate the double-fed wind power generation system, which proves the validity of DFIG output active and reactive power decoupled control and the maximum wind power tracking control. (paper)