The research of doubly-fed motor excitation control technology based on stator power factor observation

Based on the stator field oriented vector control theory and in the axis synchronous rotating coordinate system in the dq0, this paper proposed that using stator side power factor as the excitation control strategy of main observations and control variables, established the power factor adjustment equation and the excitation control model, and analyzed the impact of rotor excitation parameters variation on power factor and output power. Theoretical analysis indicated that the proposed excitation control technique has some reference value to the design of VSCF double fed wind generator and the study of control strategy.