Power Factor Correction of AC to DC Converter Using Voltage Pulse Width Modulation (P.W.M) Techniques

Modified Bi-directional AC/DC Power Converter with Power Factor Correction

Most existing power  converters and industrial motor drive systems draw non-sinusoidal currents from the supply. Non-sinusoidal currents contained harm harmonics disturb the power supply which it causes serious concern for reliability. Other equipments that use the same power supply are adversely affected. This paper suggests the operation and performance of a new modified AC/DC converter that ...

Low Cost AC/DC converter with Power Factor Correction

Three-level zero-voltage switching pulse-width modulation DC–DC boost converter with active clamping

DC–DC step-up converters for high-output voltage applications typically demand high voltage devices, leading to high conduction and switching losses. This identified demand has motivated research on active clamping and multi-level topologies. On this context, this study presents the study of a novel DC–DC boost converter with three-level boost-type active clamping, zero-voltage switching (ZVS) ...

Implementation of Single Stage Three Level Power Factor Correction AC-DC Converter with Phase Shift Modulation

A new three-level ac–dc single-stage converter that can operate with standard phase-shift pulse width modulation is proposed in this letter. In this letter, the operation of the converter is explained, and its feasibility is confirmed with experimental results obtained from a prototype converter. Finally, the efficiency of the new converter is compared with that of a previously proposed convert...

Novel Off-Line Zero-Voltage-Switching PWM AC/DC Converter for Direct Conversion from AC Line to 48VDC Bus with Power Factor Correction

A novel off-line zero-voltage-switching(ZVS) PWM A C D C converter for single stage preregulation in distributed power system is proposed. The proposed A W C converter provides both of input power factor correction and direct conversion from 110-220VAC line to 48VDC bus with single power stage. Comparing to the conventional two-stage approach(boost rectifier followed by off-line DC/DC step down...