Improving energy consumption of an induction motor by design of a power factor correction system and estimation of it's saving on a large scale

2014 ◽  
Author(s):  
N. Zabihi ◽  
R. Gouws
Keyword(s):  
Energy Consumption ◽  
Induction Motor ◽  
Power Factor ◽  
Large Scale ◽  
Power Factor Correction ◽  
Correction System

scholarly journals Effectiveness of a Power Factor Correction Policy in Improving the Energy Efficiency of Large-Scale Electricity Users in Ghana

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2582 ◽  
Author(s):  
Samuel Lotsu ◽  
Yuichiro Yoshida ◽  
Katsufumi Fukuda ◽  
Bing He
Keyword(s):  
Energy Efficiency ◽  
Power Factor ◽  
Large Scale ◽  
Regression Discontinuity ◽  
Power Factor Correction ◽  
Energy Crisis ◽  
Regression Discontinuity Design ◽  
The Government ◽  
Power Factor Improvement ◽  
The Impact

Confronting an energy crisis, the government of Ghana enacted a power factor correction policy in 1995. The policy imposes a penalty on large-scale electricity users, namely, special load tariff (SLT) customers of the Electricity Company of Ghana (ECG), whose power factor is below 90%. This paper investigates the impact of this policy on these firms’ power factor improvement by using panel data from 183 SLT customers from 1994 to 1997 and from 2012. To avoid potential endogeneity, this paper adopts a regression discontinuity design (RDD) with the power factor of the firms in the previous year as a running variable, with its cutoff set at the penalty threshold. The result shows that these large-scale electricity users who face the penalty because their power factor falls just short of the threshold are more likely to improve their power factor in the subsequent year, implying that the power factor correction policy implemented by Ghana’s government is effective.

Hardware Implementation of Single Phase Power Factor Correction System using Micro-controller

2016 ◽  
Vol 7 (3) ◽  
pp. 790
Author(s):  
Kartikesh Kumar Jha ◽  
Bidyut Mahato ◽  
Prem Prakash ◽  
Kartick Chandra Jana
Keyword(s):  
Power Systems ◽  
Power Factor ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Root Cause ◽  
Modulation Techniques ◽  
Power Switches ◽  
Controller Board ◽  
Correction System

Rapid increase of consumers in electronics devices and the use of mains rectification circuits inside these electronic devices is the root cause of mains harmonic distortion. Automatic power factor correction techniques can be applied to the industries, power systems and households to make them stable inturns increases the efficiency of system as well as the apparatus. This paper deals with the hardware design of active power factor correction circuit employing boost converter which is used to boost the DC voltages with a controller based on PID control strategy. The pulses given to power switches by pulse width modulation techniques generated by utilizing micro-controller board, Arduino thus obviating the need of complex hardware circuitry. MATLAB/SIMULINK was used to design and tune the PID controller parameters. The simulation results are matching with the predictions and the same was implemented as hardware. The waveforms various test points and across capacitors were obtained, studied and compared with the theoretical waveforms and are found to be in precise proximity of theoretical waveforms.

Novel current transducer in a single-phase active power factor correction system

2000 ◽  
Vol 15 (3) ◽  
pp. 529-535 ◽  
Author(s):  
E. Dallago ◽  
M. Passoni ◽  
G. Sassone ◽  
G. Venchi
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Power Factor Correction ◽  
Active Power ◽  
Current Transducer ◽  
Correction System

scholarly journals Effect of Harmonics on Ferroresonance in Low Voltage Power Factor Correction System—A Case Study

2021 ◽  
Vol 11 (10) ◽  
pp. 4322
Author(s):  
Martina Kutija ◽  
Luka Pravica
Keyword(s):  
Power Factor ◽  
Low Voltage ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Industrial Plant ◽  
Real Field ◽  
Rare Phenomenon ◽  
Three Phase ◽  
Correction System

This paper presents a case study of three-phase ferroresonance in a low-voltage power factor correction system and investigates the influence of harmonic distortion on the occurrence of ferroresonance. Ferroresonance is an extremely dangerous and rare phenomenon that causes overvoltages and overcurrents in the system and degrades the power quality. The study is carried out on real field measurements in an industrial plant where ferroresonance occurs in the power factor correction (PFC) system at the detuned reactor. The three-phase ferroresonance analysed in this paper is an extremely rare phenomenon that has never been reported in this type of configuration. The measurement results have shown that in this type of configuration the high harmonic distortion is a necessary condition for ferroresonance to occur. In such conditions, switching on the capacitor stage triggers the ferroresonance with quasi-periodic oscillations supported by the medium voltage grid. The main contribution is the analysis of the three-phase ferroresonance in the detuned PFC system and the influence of the harmonics on the occurrence of the ferroresonance in such a case. The possible solutions to this problem and recommendations to avoid this phenomenon are discussed.

Sign in / Sign up

Export Citation Format

Share Document