RESEARCH PAPERS

power factor correction research papers




UC3854 controlled power factor correction circuit design
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ABSTRACT This Application Note describes the concepts and design of a boost preregulator for power factor correction. This note covers the important specifications for power factor correction, the boost power circuit design and the UC3854 integrated circuit 

Average small-signal analysis of the boost power factor correction circuit
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ABSTRACT / three-terminal, small-signal model for the boost power factor correction circuit is developed. 7 he model is applicable for frequencies below the line frequency, and is useful for designing the low-frequency compensation network for feedback of the output 

Design trade-offs in continuous current-mode controlled boost power-factor correctioncircuits
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ABSTRACT The design trade-o?s in the boost power-factor correction (PFC) circuits with peak and average current-mode control are presented. The effects of slope compensation in peak current-mode control and current-amplifier compensation in average current-mode control 

Control techniques for power factor correction converters
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ABSTRACT The aspects regarding control strategies for Power Factor Correction (PFC) converters are investigated. The major control techniques to absorb sinusoidal input currents in boost PFC's are reviewed and analyzed.

SiC Schottky diodes in power factor correction
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A ctive Power Factor Correction (PFC) is widely used in today's power supplies. Government regulations and customer requirements must be satisfied when designing these circuits. Increasingly, efficiency and power density are dominating the design tasks for a typical ac- 

SiC power Schottky diodes in power factor correction circuits
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Electronic systems operating in the 600-to 1200-V range currently utilize silicon (Si) PiN diodes, which tend to store large amounts of minority carrier charge in the forward-biased state. The stored charge has to be removed by carrier recombination before the diode can 

Optimizing performance in UC3854 power factor correction applications
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ABSTRACT This Application Note describes the concepts and design of a boost preregulator for power factor correction. This note covers the important specifications for power factor correction, the boost power circuit design and the UC3854 integrated circuit 

Circuits for power factor correction with regards to mains filtering
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The new European Norms EN 60555 and the international standard IEC555 will impose a limit on the harmonic content of the input current of mains supplied equipment. In practice this will require the addition of a Power Factor Corrector (PFC) at the input of many types 

Harmonic limiting standards and power factor correction techniques
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CHARACTERISTICS: o CONSTANT SWITCHING FREQUENCY o CONTINUOUS CONDUCTION MODE (CCM) OPERATION-low device current stresses-low RMS current- small EMI filter o POSSIBILITY TO SENSE ONLY SWITCH CURRENT-efficiency 

Controlled ON-Time, Zero Current Switched Power Factor Correction Technique
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ABSTRACT A general overview of various Power Factor Correction techniques and typical application issues is first presented. Emphasis is then focused on a controlled on-time, non- resonant zero current switched (ZCS) technique. The control algorithm, design equations, 

A variable switching frequency with boost power factor correction converter
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ABSTRACT This paper presents single phase Power Factor Correction (PFC) with proposed variable switching frequency (VSF) control technique. The increasing of non linear loads such as thyristor rectifiers, switching-mode power supplies, adjustable speed drives, and 

Power factor correction and harmonic resonance: A volatile mix
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Industrial and commercial customers constantly scrutinize their monthly electrical usage, looking for ways to save money. Installing power factor correction capacitors can reduce costly penalties imposed by tiie utility and help pay for the capacitors In a relatively short 

A new simulation method of loss estimation in power factor correction converters
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ABSTRACT Loss analysis in a power factor correction AC-to-DC converter is often difficult to predict. One concern is finding a correct MOSFET simulation model. Another is the time- consuming aspect of doing simulation over a whole line cycle to determine MOSFET loss. 

Simplifying power factor correction in SMPS
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O ne component in the quest for improved energy efficiency and power quality is the use of active harmonic filter power factor correction (PFC) in switched-mode power supplies (SMPSs) for computing and industrial applications. Active PFC offers several well-known 

Nonlinear control of a PWM rectifier output voltage regulation and power factor correction
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ABSTRACT We are considering the problem of controlling AC/DC PWM-Boost rectifier. The control objectives are twofold:(i) regulating the output voltage to a desired reference value,(ii) assuring a unitary power factor. The problem is dealt with by designing a 

Interleaved Power Factor Correction (IPFC) Using the dsPIC DSC
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Digital power supplies are used in a wide variety of applications ranging from telecommunication power supplies and base stations to air conditioners and other home appliances. All of these applications predominantly use a Power Factor Correction (PFC) 

Digital Control of Switching Power Supply-Power Factor Correction Stage
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ABSTRACT Industry standard for the control of switch mode power supply (SMPS) systems has been analog control. Now with the advent of high speed, lower cost digital signal processing (DSP) ICs, digital control there has been an increased interest in digital control of SMPS. 

Is power factor correction justified in the home?
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Recently, you may have noticed advertisements for a device that claims to reduce your monthly home electricity bills. The advertising literature states that you are paying for the added electricity that must flow when power factor (PF) is less than unity within your 

Bridgeless PFC converter for power factor correction
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ABSTRACT This paper discuses the reduced high conduction loss and improved efficiency of the input rectifier-bridge of a conventional boost PFC converter. By designing the necessary techniques and methodology, the overall Power Factor (PF) can be improved to the 

Digital control of a power factor correction boost rectifier using diode current sensing technique
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ABSTRACT In this paper, a digital average current mode control using diode current sensing technique is proposed. Although the conventional inductor current sensing technique is widely used, the sensed signal of the current is negative. As a result, it requires an 

UCC28070 Implement Bridgeless Power Factor Correction (PFC) Pre-Regulator Design
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ABSTRACT Bridgeless power factor correction (PFC) topology is attracting attention as a means of satisfying the new high-efficiency requirements. This application report reviews the UCC28070 and its design considerations for bridgeless PFC. It present a bridgeless 

Fpga implementation of predictive control strategy for power factor correction
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ABSTRACT The basic idea of the proposed digital control PFC algorithm is that all the duty cycles required to achieve unity power factor in a half line period are calculated in advance by using a predictive algorithm. A Boost converter controlled by these precalculated duty 

Balancing of Unbalanced Load and Power Factor Correction in Multi-phase (4-phase) Load Circuits using DSTATCOM
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ABSTRACT Multi-phase loads (phases more than three) have gained growing attention in the recent past. Such loads especially in the form of inverter fed induction motor drives are suited to high power and specialized applications. The multi-phase source for such drive 

Power Factor Correction with Ultrafast Diodes
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More and more switched mode power supplies (SMPS) are being designed with an active power factor correction (PFC) input stage. This is mainly due to the introduction of regulations aimed at restricting the harmonic content of the load current drawn from power 

Rectifiers with power factor correction
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The topology of a standard single phase rectifier is shown in figure 1. The terminals L1 and N are connected to the grid while L+ and L-supply the inter-mediate circuit. Usually the DC voltage UZ in the intermediate circuit is smoothed by a capacitor. To save cost, generally 

Design and Implementation of Power Factor Correction (PFC) Converter with Average Current Mode Control Using DSP
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ABSTRACT This paper presents a digital controlling method for power factor correction converter with boost structure, by applying average current controlling operation at a fixed frequency, to be used at 90-265 Vrms line voltage, based on being applied on DSP. This 

3-Phase Power Factor Correction, Using Vienna Rectifier Approach and Modular Construction for Improved Overall Performance, Efficiency and Reliability1
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1.0ABSTRACT 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 

Isolated three-phase rectifier using a Sepic DC-DC converter in continuous conduction mode for power factor correction
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ABSTRACT This paper presents an analysis of a three-phase rectifier with high power factor using a Sepic DC-DC converter operating in continuous conduction mode (CCM). The structure is particularly simple and robust. Its main features are: one power processing 

New method for power factor correction with RNSIC
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ABSTRACT A new method for power factor compensation of a three-phase bridge uncontrolled rectifier with a dc filter and nonlinear load is proposed. The method is based on the Rectifier with Near Sinusoidal Currents called RNSIC, which functions as power factor 

Ramptime current-controlled APF for harmonic mitigation, power factor correction and load balancing
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M Abdel-Salam, A Ahmed , Middle East Power System ,sdaengineering.com ABSTRACT This paper presents a simulation for a shunt active power filter aimed at mitigation of harmonics, power factor correction and balancing of unbalanced three-phase system. The system consists of load fed though a six pulse bridge rectifier. The active power filter 

ANN Based Control Algorithm for Harmonic Elimination and Power Factor Correction Using Shunt Active Filter
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ABSTRACT The growth in the use of non-linear loads has caused power quality problems like high current harmonics and low power factor. Several control algorithms, which are usually used to resolve harmonic problems and their limitations are discussed in this study. 

A Novel Algorithm for Four Phase (Multi-phase) Source Side Load Balancing and Power Factor Correction
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ABSTRACT Due to the potential benefits resulting from the use of more than the conventional three phases in transmission, some interest has also grown in the area of multi-phase (phase order more than three) machines in recent years. Multi-phase loads particularly in 

Review of passive and active circuits for power factor correction in single phase, low powerAC-DC converters
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ABSTRACT The increasing growth in the use of electronic equipment in recent years has resulted in a greater need to ensure that the line current harmonic content of any equipment connected to the ac mains is limited to meet regulatory standards. This requirement is 

Power factor correction: A new industrial energy management program setup
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Power factor (PF) correction is a highly effective means of increasing energy efficiency and reducing energy costs. This effective utilization of power allows for an increase in efficiency. In addition, and as power consumption is reduced, power factor correction increases 

Piecewise affine control design for power factor correction rectifiers
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ABSTRACT Single-phase power factor correction (PFC) converter circuits are non-linear systems due to the contribution of their multiplier. This non-linearity causes difficulties in analysis and design. Models that reduce the system to a linear system involve 

Integrated Power Factor Correction (PFC) and Sensorless Field Oriented Control (FOC) System
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In recent years, the motor control industry has been focusing on designing power efficient motor control drives for a wide variety of applications. The consumer demand for improved power quality standards is driving this trend. The power quality can be enhanced by 

Power Factor Correction in Power Conversion Applications Using the dsPIC DSC
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Most of the power conversion applications consist of an AC-to-DC conversion stage immediately following the AC source. The DC output obtained after rectification is subsequently used for further stages. Current pulses with high peak amplitude are drawn from a rectified voltage source 

Optimized Fuzzy Variable Structure for a Three-Phase Rectifier with power factor correction
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ABSTRACT This paper presents optimized fuzzy variable structure control design in a three phase rectifier to correct the power factor. This control strategy combines fuzzy and sliding mode control algorithms. Few fuzzy rules are used for this scheme. The parameters of the 

High performance power-factor-correction topologies for server applications
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ABSTRACT A review of passive-and aetive-snubber approaches for reducing reverse- recovery-related switching losses in high-power boost power-factorcorrection converters is presented. The merits and limitations of both zero-voltage-switching and zerocurrent- 

Piezoelectric transformer based continuous-conduction-mode voltage source charge-pumppower factor correction electronic ballast
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ABSTRACT This paper presents the piezoelectric transformer (PT) based continuous- conduction-mode (CCM) voltage source (VS) charge-pump (CP) power factor correction (PFC) electronic ballast. By replacing LC resonant tank and transformer in the 

Impact of Power Factor Correction on the Electrical Distribution Network of Kuwait–A Case Study
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OA Al-Naseem, AK Adi , Online Journal on Power and Energy Engineering ( ,infomesr.org ABSTRACT The electrical distribution network in Kuwait has undergone several improvements over the years to ensure a higher capacity and efficient electricity service to all consumers. Power factor correction (PFC) is one of the techniques recently applied to the electrical 

Circuit Theory and Design of Power Factor Correction Power Supplies
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KT Chi ,IEEE Distinguished Lecture ,cktse.eie.polyu.edu.hk  5 Power Factor Correction • Power converters are required to present themselves as linear resistance to the supply voltage.  Final Conclusion The key point is that power factor correction and most other concepts are probably not new from the point of view of formal circuit theory. 

A Combined Buck and Boost Converter for Single-Phase Power-Factor Correction
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? The AC/DC converters in IBM's high-end servers connect to any 3-phase utility world-wide (up to 480V nominal, 576V for 2 seconds)? Up to 3 converters per line cord provide as much as 22.5 kW of bulk power? Each converter operates line-to-line, without a neutral 

Simulation of a novel zero voltage transition technique based on boost power factor correction converter with EMI filter
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ABSTRACT A novel Zero Voltage Transition (ZVT) technique based closed loop control of Boost Power Factor Correction (PFC) converter with Electro Magnetic Interference (EMI) Filter is presented in this paper. It operates at a fixed frequency while achieving zero 

Taming Unwanted Harmonics with Power Factor Correction
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Rapid growth in consumer electronics over the past decade has caused concern for power utility companies. For years the electricity supply industry has had a keen eye on industrial organizations which carry heavy inductive motor loads with numerous types of machinery 

Filters for Power Factor Correction in the Presence of Non-Linear Loads
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S Acevedo, A Llamas, J Baez, A Jorge ,Proceedings of the Power Quality 99 ,mty.itesm.mx ABSTRACT This paper presents a practical example of how harmonic amplification can be avoided by an appropriate design of detuned filters. The authors summarize the advantages of using harmonic filters over the use of capacitors for power factor correction. The 

Single and Three Phase Rectifiers with Active Power Factor Correction for Enhanced MainsPower Quality
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ABSTRACT The major drawbacks of conventional diode or thyristor rectifiers are overcome by active power factor correction this further provides additional benefits. Operating principles and features of single and three phase rectifiers with active power factor correction are 

A Digital Power Factor Correction using Floating Point Processor for Pulse Width Modulation Control in Boost Converters
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ABSTRACT This paper introduces novel digital and analog power factor correction techniques for single phase boost converter using pulse width modulation. It attempts to bring the input voltage waveform and input current waveform in phase with each other. In digital 

An improved zero-voltagetransition technique in single-phase active power factor correctioncircuit
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ABSTRACT This paper presents an improved Zero-Voltage-Transition Technique (ZVT- Technique) in a single-phase active power factor correction circuit based on a dc-dc boost converter topology and operated in a continuous-inductor-current mode with fixed- 

Advanced DSP Based Single Phase Power Factor Correction Approach
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ABSTRACT In this paper an advanced DSP based single-phase power factor correction approach for clean power is presented. The proposed approach draws near sinusoidal input current even when the input utility voltage is distorted. A closed loop digital algorithm is 

Matlab simulations for power factor correction of switching power
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R Kaichun, H Chunhan, S Dan, W Yongli ,Matlab-Modelling, It is clear that the power factor PF is determined by r and 1 ?. The bigger the 1 ?, the bigger the reactive power is, the bigger the wastage of conductive line wire and transformer is. The smaller the r, the bigger the input current harmonics of is, which will cause current 

Modified Bi-directional AC/DC Power Converter with Power Factor Correction
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ABSTRACT 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 

Acoustic Noise Reduction and Power Factor Correction in Switched Reluctance Motor Drives
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ABSTRACT In this paper, a four-phase 8/6-pole 4-kW SR motor drive model is presented. Based on experimental data, the model allows an accurate simulation of a drive in dynamic operation. Simulations are performed and a laboratory type set-up is built based on a TI 

A passive power factor correction technique for single-phase thyristor-based controlled rectifiers
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ABSTRACT An approach already introduced to correct in a very simple way the power factor (PF) of single-phase and three-phase diode rectifiers is extended to single-phase line- frequency phasecontrolled rectifiers. Some recalls on the aforementioned PF correction 

Assessment of the Impacts of Power Factor Correction in Computer Power Supplies on Commercial Building Line Losses
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Executive Summary As electric utility interest in cost effective opportunities to reduce electrical consumption has grown, attention is increasingly turning to the electronic products previously classified as miscellaneous load or plug load. These devices include a wide 

Steady state and dynamic analysis and optimization of single-stage power factor correctionconverters
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ABSTRACT With the increased interest in applying Power Factor Correction (PFC) to off-line AC-DC converters, the field of integrated, single-stage PFC converter development has attracted wide attention. Considering the tens of millions of low-to-medium power supplies 

Power Factor Correction Using the Buck Topology–Efficiency Benefits and Practical Design Considerations
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ABSTRACT Although active power factor correction (PFC) is typically accomplished with a boost power topology, this topic will show that a buck power stage offers significant efficiency advantages-particularly when universal line operation is required. Specific 


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