The realization of a novel control of Doubly-Fed Induction Generator by using rotor current

Currently, most of Doubly-Fed Induction Generators (DFIGs) were controlled by the rotor voltage commands. This thesis directly inputs rotor current commands to control the real and imaginary powers of DFIGs. First, the vector control principle is used to develop the real power imaginary power and capacitor voltage controls. In order to effectively control DFIGs, both the PI linear control and Backstepping nonlinear control theories [1] are adopted to realize the control of the real and imaginary powers. The PSCAD/EMTDC [2] and Matlab/Simulink are used to simulate and verified the proposed PI control and Backstepping nonlinear control respectively. Meanwhile, the PSCAD/EMTDC and Matlab/Simulink are compared in the simulation chapter. The results confirm the performances of the proposed real power imaginary power and capacitor voltage controllers Therefore, the dynamic phasors technique algorithms have the potentials to be established on a practical environment.