Abstract
Interval type-2 (IT2) Takagi-Sugeno fuzzy (T-S fuzzy) current control of permanent magnet synchronous generator (PMSG) is developed in this paper. The derived system model of PMSG is nonlinear, and IT2 T-S fuzzy systems will be applied to nonlinear system control. IT2 T-S fuzzy model of a PMSG is first established. Next, IT2 T-S fuzzy control algorithm and stability terms are derived. After defuzzification, IT2 T-S fuzzy current control is developed through parallel distributed compensation (PDC) method. The current controller gain is obtained by Linear Matrix Inequality (LMI). Three-phase AC output power of PMSG is converted to DC load power. The DC output voltage and PMSG winding currents are properly converted into the microcontroller. The duty ratios of six switches are calculated via the proposed controller. Finally, the controller performance is validated by experiments.