DC link voltage control of a PWM excited induction generator

A DC link voltage control strategy of a vector controlled, PWM inverter fed, induction generator supplying a DC bus bar is presented. The DC link voltage is controlled using a nonlinear approach and a fuzzy logic based interpolation of PI controllers. The strategy meets noise considerations in steady state, while keeping an excellent performance during transients. Experimental validation of the strategy using a 2.5 kW prototype is shown.