Research and simulation of double-fed wind power generation rotor side control technology

For the purpose of solving the problem that rotor side power and DC bus voltage frequently changes, present paper describes an experimental platform constructed by an 11kW doubly-fed induction generator (DFIG) wind power generation, which uses a back-to-back PWM converter as the excitation power supply for the DFIG wind power generation system of variable speed constant frequency (VSCF). The converter connects the grid with the rotor. In order to control the rotor-side of the converter, stator voltage oriented control strategy is proposed as a vector control scheme. Based on this scheme, the simulation model of the system was built and simulated in Matlab2010a. The simulation results show that the system can realize the active power, reactive power decoupling control and capture the maximum wind energy.