High-Reliability Dual-Buck Inveter Controller Design based on repetitive control

Dual buck inverter is a reliable and efficient method for high voltage utilization compared with traditional inverter bridge circuit and now broadly utilized. Because of the no bridge arm characteristic of double buck full bridge inverter, the current is in half cycle and the hysteresis current control mode is applied. In order to minimize the disturbance caused by power supply fluctuation and system parameter change, this paper proposes a fast repeat controller. The result shows that the controller could achieve remarkable waveform tracking performance, stability and high accuracy in double buck inverter.