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The mathematical model of the three-phase grid-side PWM converter in d-q synchronous reference frames is thoroughly investigated. Comparing with the tradition control way of PWM converter. this method doesn’t demand high accuracy of mathematic model. and has little sensitivity of parameter change and the external perturbation. which can control a target definitely and realize digitized easily. Comparative simulation study is carried out to evaluate the performance of the non-coordinated control with current state decoupling and grid voltage feed-forward compensation. The exact feedback linearization scheme based on the fuzzy sliding mode control for the grid-side converter in VSCF wind turbine was proposed and the simulation results shows that the result is satisfied. But this control strategy was based on the abstract and sophisticated differential geometry theory. it is difficult to apply in the engineering area.
