Research on SRG wind power system based on MPPT control scheme

Taking the Switched Reluctance Generator (SRG) with 8 stator poles & 6 rotor poles for example, according to its operation principle, nonlinear mathematical model of SRG is analyzed by means of the Fourier series tool. A developed rotational speed feedback control strategy for maximum power point tracking (MPPT) is presented. The excitation current is regulated by comprehensive judgments of rotational speed and its error signal to determine output electric power of SRG, and power matching can be realized; so the whole system operational capability can be improved. Simulation models of SRG wind power system with developed MPPT control proposed are established based on MATLAB platform, and results testify correctness of SRG nonlinear models and reliability of the MPPT algorithm by showing that SRG outputs can follow the theoretical maximum values at stable conditions or variable working situation with transient recovery process, therefore excellent static and dynamic performances can be obtained.