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.

scholarly journals A Novel Single-Switch Single-Stage LED Driver with Power Factor Correction and Current Balancing Capability

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1340
Author(s):  
Yih-Her Yan ◽  
Hung-Liang Cheng ◽  
Chun-An Cheng ◽  
Yong-Nong Chang ◽  
Zong-Xun Wu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Boost Converter ◽  
Single Stage ◽  
Led Driver ◽  
Flyback Converter ◽  
High Power Factor

A novel single-switch single-stage high power factor LED driver is proposed by integrating a flyback converter, a buck–boost converter and a current balance circuit. Only an active switch and a corresponding control circuit are used. The LED power can be adjusted by the control scheme of pulse–width modulation (PWM). The flyback converter performs the function of power factor correction (PFC), which is operated at discontinuous-current mode (DCM) to achieve unity power factor and low total current harmonic distortion (THDi). The buck–boost converter regulates the dc-link voltage to obtain smooth dc voltage for the LED. The current–balance circuit applies the principle of ampere-second balance of capacitors to obtain equal current in each LED string. The steady-state analyses for different operation modes is provided, and the mathematical equations for designing component parameters are conducted. Finally, a 90-W prototype circuit with three LED strings was built and tested. Experimental results show that the current in each LED string is indeed consistent. High power factor and low THDi can be achieved. LED power is regulated from 100% to 25% rated power. Satisfactory performance has proved the feasibility of this circuit.

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.

scholarly journals A Novel and Cost-Effective Drive Circuit for Supplying a Piezoelectric Ceramic Actuator with Power-Factor-Correction and Soft-Switching Features

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1229
Author(s):  
Chun-An Cheng ◽  
Hung-Liang Cheng ◽  
Chien-Hsuan Chang ◽  
En-Chih Chang ◽  
Chih-Yang Tsai ◽  
...  
Keyword(s):  
Power Factor ◽  
Piezoelectric Ceramic ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Cost Effective ◽  
Soft Switching ◽  
Distortion Factor ◽  
Inductive Load ◽  
Power Switches ◽  
Drive Circuit

This paper proposes a novel and cost-effective drive circuit for supplying a piezoelectric ceramic actuator, which combines a dual boost AC-DC converter with a coupled inductor and a half-bridge resonant DC-AC inverter into a single-stage architecture with power-factor-correction (PFC) and soft-switching characteristics. The coupled inductor of the dual boost AC-DC converter sub-circuit is designed to work in discontinuous conduction mode (DCM), so the PFC function can be realized in the proposed drive circuit. The resonant tank of the half-bridge resonant inverter sub-circuit is designed as an inductive load, so that the two power switches in the presented drive circuit can achieve zero-voltage switching (ZVS) characteristics. A 50W-rated prototype drive circuit providing a piezoelectric ceramic actuator has been successfully implemented in this paper. From the experimental results at 110V input utility-line voltage, the drive circuit has the characteristics of high power factor and low input current total-harmonic-distortion factor, and two power switches have ZVS characteristics. Therefore, satisfactory outcomes from measured results prove the function of the proposed drive circuit.

Resonance Impact on Power Factor Correction System in Power System with Harmonic Distortion

2015 ◽  
Vol 781 ◽  
pp. 254-257 ◽  
Author(s):  
Saran Chaladying ◽  
Pana Dusitakorn ◽  
Nattachote Rugthaichareoncheep
Keyword(s):  
Power System ◽  
Power Factor ◽  
Power Factor Correction ◽  
Current Source ◽  
Harmonic Distortion ◽  
Resonance Phenomenon ◽  
Problem Solution ◽  
Harmonic Current ◽  
Parallel Resonance ◽  
Correction System

This paper presents the resonance impact on power factor correction system (PFC system) in power system with harmonic distortion. The main purpose is to show harmonic current amplification that generated by the parallel resonance phenomenon in power system and problem solution. The power system model for analysis consist of the harmonic current source and PFC system. These devices are established by MATHLAB/Simulink. In simulation, the variable speed drive, which is DC drive, instead to the harmonic current source in power system that use capacitor to improve power factor of system. The problem solution, the series reactor, which is detune filter, is used to correct parallel resonance problem, by connecting capacitor with the series reactor, which is detune filter. The result of simulation, detune filter is able to avoid the parallel resonance phenomenon and partially reduce harmonic current that flowing to capacitor, however the series reactor, which is detune filter, is unable to reduce harmonic current of the harmonic current source.

The Effects of Total Harmonics Distortion for Power Factor Correction at Non-Linear Load

2016 ◽  
Vol 7 (2) ◽  
pp. 551 ◽  
Author(s):  
R. A. Rani ◽  
Shakir Saat ◽  
Yusmarnita Yusop ◽  
Huzaimah Husin ◽  
F. K. Abdul Rahman ◽  
...  
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
The Other ◽  
Linear Load ◽  
Non Linear ◽  
Sinusoidal Waveform ◽  
Non Linear Load ◽  
The Relationship

This paper presents the effect of total harmonic distortion (THD) in power factor correction (PFC) at non-linear load. This study focuses on the relationship between THD and PFC. This is beacuse,the power factor affects THD. This occurs in power system as we have variety of loads, i. e linear load or non-linear load. The variety of loads will influence the sinusoidal waveform, which comes out from harmonic distortion. Thus, based on this study, we can compare the effective method in improving the power factor as it will not disturb the performance of THD. The focus of study is on the single phase load, where the voltage restriction is 240 V.  The analysis will  only focus on the consumer, which depends on the variety of non-linear load. Besides, the parameters for analysis are based on the percentage of THD and the value of power factor. The instrument for measuring the parameter is based on power factor correction device or technique. On the other hand, the method that was used for this study is based on simulation which incorporated the Multisim software. At the end of ths study, we can choose the most effective method that can be used to improve the power factor correction without disturbing the THD.

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