scholarly journals Improved Power Quality Switched Mode Power Supply Using Buck-Boost Converter

2021 ◽  
pp. 824-831
Author(s):  
Hariharan P ◽  
Dr. Ranjithkumar K
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Supply ◽  
Fuzzy Logic Controller ◽  
Power Factor Correction ◽  
Boost Converter ◽  
Boost Converters ◽  
Current Harmonics ◽  
Front End ◽  
Switched Mode Power Supply

In this work, The devices generally used in industrial, commercial and residential applications need to undergo rectification for their proper functioning and operation. The operation of the buck– boost converter in discontinuous conduction mode ensures inherent PFC operation and reduces complexity in control. Hence there is a need to reduce the line current harmonics so as to improve the power factor of the system. This has led to designing of Power Factor Correction circuits. This concept presents a power factor corrected (PFC) Buck–Boost converter-fed SMPS. This project deals with the design, analysis, simulation, and development of a power-factor-correction (PFC) multiple output switched-mode power supply (SMPS) using a Buck–Boost converter at the front end. Single-phase ac supply is fed to a pair of back-to-back connected buck–boost converters to eliminate the diode bridge rectifier, which results in reduction of conduction losses and power quality improvement at the front end. To observe the performance of this converter, a model based on the Buck Boost topology has been designed and developed software and implemented with Proportional-Integral (PI) and Fuzzy logic controller. The simulations are demonstrated in order to validate the effectiveness of the controllers in power factor improvement. By using MATLAB.

scholarly journals DESIGN OF A MICROCONTROLLER BASED PFC

2013 ◽  
pp. 58-62
Author(s):  
PRADEEP KUMAR ◽  
P.R. SHARMA ◽  
ASHOK KUMAR
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Power Factor Correction ◽  
Power Converter ◽  
International Standards ◽  
Control Methods ◽  
Current Harmonics ◽  
Front End ◽  
Increasing Demand ◽  
And Control

With the increasing demand for power from the ac line and more stringent limits for power quality, power factor correction has gained great attention in recent years. A variety of circuit topologies and control methods have been developed for the PFC application. International Standards in the area of compliance of a product’s AC mains current harmonics have forced that new power supply design must include the power factor correction at the front end. The new trend in Power Supply is towards the digital control. This paper discusses the design of a controller for Power Factor Correction (PFC). A microcontroller based PFC design is proposed and design issues are discussed. PFC is simulated using MATLAB and results are reported. Interface requirement between the power converter and microcontroller are discussed.

Power Factor Corrected Zeta Converter Based Improved Power Quality Switched Mode Power Supply

2015 ◽  
Vol 62 (9) ◽  
pp. 5422-5433 ◽  
Author(s):  
Shikha Singh ◽  
Bhim Singh ◽  
G. Bhuvaneswari ◽  
Vashist Bist
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Supply ◽  
Switched Mode Power Supply

Power factor correction in switched mode power supply for computers using canonical switching cell converter

2015 ◽  
Vol 8 (2) ◽  
pp. 234-244 ◽  
Author(s):  
Shikha Singh ◽  
Vashist Bist ◽  
Bhim Singh ◽  
Gurumoorthy Bhuvaneswari
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Power Factor Correction ◽  
Switched Mode Power Supply

Improved Power Quality Switched-Mode Power Supply Using Buck–Boost Converter

2016 ◽  
Vol 52 (6) ◽  
pp. 5194-5202 ◽  
Author(s):  
Shikha Singh ◽  
Bhim Singh ◽  
G. Bhuvaneswari ◽  
Vashist Bist
Keyword(s):  
Power Quality ◽  
Power Supply ◽  
Boost Converter ◽  
Switched Mode Power Supply

A 28-Pulse AC-DC Converter Based SMPS for Telecom Power Supply

2010 ◽  
Vol 11 (4) ◽  
Author(s):  
R. Kalpana ◽  
G. Bhuvaneswari ◽  
Bhim Singh ◽  
Shikha Singh ◽  
Sanjay Gairola
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Supply ◽  
Simulated Performance ◽  
Harmonic Currents ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Switched Mode Power Supply ◽  
Laboratory Prototype ◽  
Wide Operating

This paper presents a new 28-pulse ac-dc converter for enhancing the power quality at the point of common coupling, while feeding a medium capacity switched mode power supply (SMPS). It consists of two series connected 14-pulse ac-dc uncontrolled converters fed by seven phase-shifted ac voltages. The proposed converter is found capable of suppressing up to 27 harmonic currents in the ac mains. The power factor is also improved to near unity over a wide operating range of the SMPS. The design and analysis of the proposed ac-dc converter is carried-out in detail. A laboratory prototype of the autoconnected transformer based 28-pulse ac-dc converter is developed, and various tests have been conducted on it to validate the simulated performance of the proposed converter. Several experimental results are also included to show the effectiveness and robustness of the proposed converter.

scholarly journals RANCANG BANGUN INTERLEAVED BOOST CONVERTER SEBAGAI PERBAIKAN KUALITAS DAYA PADA RANGKAIAN PENYEARAH SATU FASA DENGAN BEBAN INDUKTIF DAN RESISTIF

2019 ◽  
Vol 17 (1) ◽  
pp. 72-76
Author(s):  
Winarno Fadjar Bastari ◽  
John Geral Mesah
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Power Factor Correction ◽  
Boost Converter ◽  
Interleaved Boost Converter ◽  
Conduction Mode

Sumber tegangan searah didapat melalui rangkaian penyearah gelombang penuh satu fasa tidak terkendali dari sumber tegangan jala – jala PLN sebesar 220 Volt. Pemasangan kapasitor sebagai filter dengan nilai atau jumlah yang cukup besar dapat menyebabkan bentuk gelombang arus masukan menjadi tidak sinusoidal (terdistorsi) akibat dari harmonisa yang muncul sedangkan tegangan masukan dari jala – jala PLN berbentuk sinusoidal. Perbedaan bentuk gelombang tegangan dan arus masukan yang terjadi ini dapat berpengaruh pada nilai faktor yang dihasilkan. Berdasarkan masalah ini dibuatlah suatu penelitian mengenai perbaikan faktor daya menggunakan rangkaian Interleaved Boost Converter yang difungsikan sebagai rangkaian Power Factor Correction (PFC) dan regulator tegangan dengan metode pengaturan menggunakan logika Fuzzy. Rangkaian Interleaved Boost Converter ini dibuat bekerja pada kondisi Discontinues Conduction Mode (DCM) agar apapun beban yang dicatu pada rangkaian akan membuat sistem bersifat resistif. Sehingga diharapkan bentuk gelombang tegangan dan arus masukan sama yang akan menghasilkan nilai faktor mendekati nilai unity. Hasil dari penelitian ini adalah rangkaian Interleaved Boost Converter yang sudah dapat difungsikan sebagai rangkaian Power Factor Correction dan juga sebagai regulator tegangan. Nilai Faktor daya yang dihasilkan adalah sebesar 0.93 dimana jika dibandingkan dengan nilai faktor daya dari Power Supply Swicthing 48V sebesar 0.90 sudah jauh lebih baik.

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