Title :
Analysis of a high step-down AC-DC converter
Author :
Lung-Sheng Yang ; Chia-Ching Lin
Author_Institution :
Dept. of Electr. Eng., Far East Univ., Tainan, Taiwan
Abstract :
A high power factor and high step down AC-DC converter is presented in this paper. The front semi-stage of the proposed converter is a modified AC-DC buck-boost converter. This semi-stage is operated in discontinuous conduction mode to achieve high power factor and low total harmonic distortion of input current. The rear semi-stage of the proposed converter is a high step-down DC-DC converter. The voltage stresses of the power devices in the proposed converter are low. Also, the DC-link voltage in the proposed converter is lower than the peak value of the input voltage. The steady-state analysis is discussed. Finally, a simulation is done to verify the performance of the proposed converter.
Keywords :
AC-DC power convertors; DC-DC power convertors; harmonic distortion; power conversion harmonics; power factor; AC-DC buck-boost converter; DC-link voltage; discontinuous conduction mode; high power factor AC-DC converter; high step-down AC-DC converter; high step-down DC-DC converter; power devices; steady-state analysis; total harmonic distortion; voltage stresses; Capacitors; Inductors; Reactive power; Rectifiers; Stress; Total harmonic distortion; Windings; Discontinuous conduction mode; High power factor; Total harmonic distortion;
Conference_Titel :
Information Science, Electronics and Electrical Engineering (ISEEE), 2014 International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4799-3196-5
DOI :
10.1109/InfoSEEE.2014.6948193
