Abstract”
This paper presents a simplified sinusoidal uninterruptible power supply (UPS) system. The proposed scheme includes features such as high power factor, low total harmonic distortion and good dynamic response at the ac output voltage. In addition, the scheme has the desirable characteristics of high efficiency, simple circuit and low cost compared with a traditional standalone multiple stages UPS with power factor correction. The paper also presents the circuit operation, the analysis and, experimental results of the proposed U ....etc

[:=Read Full Message Here=:]

i need ppt and pdf of this topic..please send it urgently.. ....etc

[:=Read Full Message Here=:]

3-Phase Power Factor Correction, Using Vienna Rectifier Approach and Modular Construction for Improved Overall Performance, Efficiency and Reliability
1.0 Abstract:
While applications for 1-Phase PFC are now familiar and prevalent, the same is not the
case with 3-Phase PFC. Many equipments using kilowatts of power from 3-Phase mains
should be candidates of 3-Phase power factor correction, because several advantages
ensue, both to the user of the equipment and to the utility. The Vienna Rectifier approach
to achieve 3-Phase ....etc

[:=Read Full Message Here=:]

I need technical seminar topic on the topic power factor correction ....etc

[:=Read Full Message Here=:]

K.D. Slack





ABSTRACT
The traditional approach to power factor correction in a facility is to add capacitors to individual loads such as motors and fluorescent lighting circuits, to add a capacitor bank with switching to a major distribution panel, or to add a capacitor bank with switching to the power input panel from the utility lines. Recently it has been shown that careful selection of high-efficiency motors for a facility can result in new motors with a significantly higher power factor than ....etc

[:=Read Full Message Here=:]

I AM BHARGAVI. I AM ENGINEERING FINAL YEAR STUDENT .I NEED THE INFORMATION ABOUT POWER FACTOR CORRECTION USING MULTIPLE CAPACITOR BANKS ....etc

[:=Read Full Message Here=:]

Application Note 42047 Power Factor Correction (PFC) Basics


What is Power Factor?
Power factor (pf) is defined as the ratio of the real power (P)
to apparent power (S), or the cosine (for pure sine wave for
both current and voltage) that represents the phase angle
between the current and voltage waveforms (see Figure 1).
The power factor can vary between 0 and 1, and can be either
inductive (lagging, pointing up) or capacitive (leading, pointing
down). ....etc

[:=Read Full Message Here=:]

Power Factor Correction of Linear and Non-linear Loads Employing a Single Phase Active Power Filter Based on a Full-Bridge Current Source Inverter Controlled Through the Sensor of the AC Mains Current
Abstract:
In the last years the number of non-linear loads has been increasing rapidly. This non-linear load had drawn a current form the AC Mains with harmonic components, leading to low power factor, low efficiency, interference by the EMI, among others. A classic solution is the use of passive filters, which ....etc

[:=Read Full Message Here=:]

urgent requirement of material on power factor control by microcontroller ....etc

[:=Read Full Message Here=:]

INTRODUCTION

Boost converter is one of the most popular choices for high-quality rectification. The converter is supplied from a full-wave rectified line voltage and operated so that the input current follows the input voltage. The input current shaping can be achieved using a number of techniques. When the converter is operated at fixed frequency and fixed duty ratio in the discontinuous conduction mode (DCM), the low- frequency component of the input current is approxi ....etc

[:=Read Full Message Here=:]