APPARATUS OF POWER DECOUPLING CONTROL FOR DUAL CONVERTER TO ELIMINATE THE LOW LINE FREQUENCY RIPPLE, DC-AC POWER CONVERSION SYSTEM INCLUDING THE SAME

摘要

Disclosed is a DC-AC power conversion system including a decoupling control device for a bi-directional converter for low-frequency ripple elimination. The decoupling control device of the bidirectional converter for removing low frequency ripple generates a control value of the first direction transfer function of power conversion in the dual active bridge converter for removing low frequency ripple components from the input DC source voltage of the dual active bridge converter A second direction of power conversion in the dual active bridge converter that causes the ripple compensation loop to be performed and the dual line frequency ripple generated in the dual active bridge converter to vibrate around the DC link voltage between the dual bridge converter and the single phase inverter. And an average voltage control loop that generates the control values of the function.