Power Factor Improvement of AC-DC Converter Based on Separately Excited DC Motor Using Passive Filter

Multi-Stage DC-AC Converter Based on new DC-DC converter for energy conversion

This paper proposes a multi-stage power generation system suitable for renewable energy sources, which is composed of a DC-DC power converter and a three-phase inverter. The DC-DC power converter is a boost converter to convert the output voltage of the DC source into two voltage sources. The DC-DC converter has two switches operates like a continuous conduction mode. The input current of DC-DC...

AC/DC Converter with Active Power Factor Correction Applied to DC Motor Drive

–Harmonic pollution and low power factor in power systems caused by power converters have been of great concern. To overcome these problems several converter topologies using advanced semiconductor devices and control schemes have been proposed. This investigation is to identify a low cost, small size, efficient and reliable ac to dc converter to meet the input performance index of UPS. The per...

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

Speed Control Based on Adaptive Fuzzy Logic Controller For AC-DC Converter Fed DC Motor Drives

This paper presents fuzzy logic control (FLC) based speed control system for a DC Motor drive through the use of Genetic optimization. The control system design and implementation procedures of DC motor drive using Digital Signal Processor are described. Results of simulation and experimental on the real control system demonstrated that the proposed FLC is able to overcome the disadvantage of u...