基于负载电流前馈的单相两级式逆变器低频输入电流纹波抑制

A large amount of ripple at twice the output frequency will emerge in the input current due to the pulsating output power in a two-stage single-phase inverter. To reduce the low-frequency input current ripple, a control strategy is presented in this paper based on the front-end dc–dc converter load current feedforward. It intends to control the dc bus voltage to swing properly at twice the output ...