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Title: Application Note 42047 Power Factor Correction PFC Basics
Page Link: Application Note 42047 Power Factor Correction PFC Basics -
Posted By: Asmi.A
Created at: Thursday 17th of August 2017 05:07:01 AM
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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). In order to reduce an ....etc

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Title: An Efficient Common-Mode Hybrid EMI Filter Used in Switch-mode Power Supply
Page Link: An Efficient Common-Mode Hybrid EMI Filter Used in Switch-mode Power Supply -
Posted By: Poorvika
Created at: Thursday 17th of August 2017 05:37:47 AM
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Am rema,want to know about an efficient common mode hybrid filter used in SMPS for my seminar work.

Abstract obtained from IEE is After the study of electromagnetic interference (EMI)
mechanisms in switching mode power system (SMPS) and the soft
switch, this paper proposes a novel hybrid filter (HEF) to suppress
commend mode EMI in SMPS. The HEF consists of a passive filter
and an active filter. Matching network, which can reduce
impedance mismatching effects, is introduced in passive part. A
feed-forward active filter is adopted ....etc

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Title: automatic power factor correction using microcontroller
Page Link: automatic power factor correction using microcontroller -
Posted By: ankitvj
Created at: Thursday 17th of August 2017 04:45:05 AM
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To get full information or details of automatic power factor correction using microcontroller please have a look on the pages

http://seminarsprojects.net/Thread-microcontroller-based-automatic-power-factor-controlling-system?pid=124495#pid124495

http://seminarsprojects.net/Thread-automation-in-power-factor-improvement-full-report

http://seminarsprojects.net/Thread-power-factor-correction?page=2

if you again feel trouble on automatic power factor correction using microcontroller please reply in that page and ask specific fields in automatic ....etc

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Title: Common Base and Common Collector Amplifiers
Page Link: Common Base and Common Collector Amplifiers -
Posted By: nidhinmohan
Created at: Thursday 05th of October 2017 04:05:52 AM
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Common Base Amplifiers
Uses the same stabilised bias scheme as CE configuration.
Uses the same stabilised bias scheme as CE configuration.
The base is grounded for a.c. signals using a large capacitor.
Signal input at the emitter (between the emitter and the common base)
Signal output at the collector (between the collector and the common base) ....etc

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Title: circuit diagram of automatic power factor correction using capacitive load banks
Page Link: circuit diagram of automatic power factor correction using capacitive load banks -
Posted By: mithoon
Created at: Thursday 17th of August 2017 04:47:05 AM
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To get full information or details of automatic power factor correction using capacitive load banks please have a look on the pages

http://seminarsprojects.net/Thread-automatic-power-factor-corrector-using-capacitive-load-bank

if you again feel trouble on automatic power factor correction using capacitive load banks please reply in that page and ask specific fields in automatic power factor correction using capacitive load banks ....etc

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Title: Reduction of common mode currents generated by three-level inverters
Page Link: Reduction of common mode currents generated by three-level inverters -
Posted By: joannapaul
Created at: Thursday 05th of October 2017 05:04:11 AM
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Abstract

In adjustable speed drive applications, the switching of the inverter semiconductors generates common
mode currents as well as harmful overvoltages on the motor terminals when long cables are used.
Consequently, bulky and expensive input and output filters must be used. This work aims at reducing
these disturbances from their origin by using a three-level neutral-point-clamped (NPC) inverter
controlled with a new pulse-width-modulation (PWM) strategy. Whereas previous common mode
noise-reducing strate ....etc

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Title: A Novel Uninterruptible Power Supply System With Active Power Factor Correction
Page Link: A Novel Uninterruptible Power Supply System With Active Power Factor Correction -
Posted By: god
Created at: Thursday 17th of August 2017 08:06:00 AM
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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 UPS sch ....etc

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Title: Power Factor Correction
Page Link: Power Factor Correction -
Posted By: tinu
Created at: Thursday 17th of August 2017 04:48:02 AM
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WELCOME POWER FACTOR CORRECTION


Submitted By:
Rajat Kumar Barik
Electrical Branch


INTRODUCTION

1. Power factor is the percentage of electricity that is being used to do useful work
2. Power factor =Active power/Apparent power
3. Apparent power has two component:
(a) Active power
(b)Reactive power



DEFINATION

o ACTIVE POWER: Active power does all the work.
o UNIT : kw
o P= v I cos
o REACTIVE POWER: I t is the pseudo power(false) power which flows fro ....etc

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Title: boiler follow mode and turbine follow mode ppt
Page Link: boiler follow mode and turbine follow mode ppt -
Posted By: tyagi_57
Created at: Thursday 05th of October 2017 04:28:53 AM
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Title: ECONOMIC COMPARISION OF POWER FACTOR CORRECTION BY CAPACITORS AND HIGH POWER FACT
Page Link: ECONOMIC COMPARISION OF POWER FACTOR CORRECTION BY CAPACITORS AND HIGH POWER FACT -
Posted By: subhanshu
Created at: Thursday 17th of August 2017 05:53:04 AM
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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 t ....etc

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