A voltage control strategy to improve the orientation vector and Mathematical Modeling

The present invention discloses an improved directional voltage vector control method and mathematical modeling strategy, in the method photovoltaic inverter main circuit model, the inverter AC output is flanked by a series inductor, shunt capacitance, interface transformer, it LCL filter circuit constituting the three equivalent; acquisition network-side three-phase voltage? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ,,, ,,, three-phase currents fed to the grid-side control algorithm VOC correlation operation. The method as network-side three-phase current inner loop control system, dual closed loop control system. The method further spatial voltage vector PMW modulation method and Inverter control is implemented based on a voltage vector orientation. The present invention is an improvement and mathematical modeling method for policy-based control voltage RTDS simulation modeling orientation vector, were correspondingly improved control algorithm, the corresponding control module on SVPWM RTDS / RSCAD, it can achieve flexible control mode, the inverter can achieve four-quadrant operation.