Abstract—A model predictive control-based second harmonic injection (MPC-SHI) method is proposed in this paper to attenu- ate the DC side second pulsation for the single-phase inverter. In order to suppress the low-frequency pulsating ripple and reduce the filter circuit parameters, a novel. . A voltage–fed inverter (VFI) or more generally a voltage–source inverter (VSI) is one in which the dc source has small or negligible impedance. The voltage at the input terminals is constant. controlled turn-on and turn-off. bridge or full-bridge. . The measured DC-link voltages udc1 and udc2 further con-firm that the single-phase power pulsation is not buffered by the capacitors: udc1 directly follows the rectified grid voltage, while the average of udc2 remains constant.
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