High-Power-Factor Rectifier Using the Modified SEPIC Converter Operating in Discontinuous Conduction Mode

作者：Bianchin Carlos Gabriel^*; Gules Roger; Badin Alceu Andre; Ribeiro Romaneli Eduardo Felix

来源：IEEE Transactions on Power Electronics, 2015, 30(8): 4349-4364.

DOI：10.1109/TPEL.2014.2360172

• AC-DC power conversion
• digital control
• rectifiers

The theoretical and experimental analysis of a modified version of the SEPIC dc-dc converter used as preregulator operating in discontinuous conduction mode (DCM) is presented in this paper. The proposed converter presents a low input current ripple operating in DCM, and the switch voltage is lower than the output voltage. The switch voltage reduction increases the converter reliability and a low drain-to-source on-resistance (RDSon) MOSFET can be used depending on the converter specification. Moreover, a digital control technique is applied to the proposed converter in order to reduce the third-harmonic input current distortion resultant of the operation in DCM. Finally, a 100-W prototype was developed operating with efficiency equal to 95.6%.

• 出版日期2015-8