Vector-controlled PWM rectifier with hysteresis regulators

This paper introduces a new vector control strategy of three-phase PWM rectifier. Because input currents of PWM rectifier are cross coupling in d-q coordinates, hysteresis regulators are used to achieve approximate decoupling control. Absolute error of d-q currents is considered while building d-q switching functions. Suitable space voltage vector is selected base on a switching function table. To confirm the relative priority of adjusting d-q currents will advantage the selection. The strategy can improve dynamic performance of system startup and predigest system structure. Simulation result shows that this control strategy is effective.