A new AC-DC converter using bridgeless SEPIC

This study presents the analysis and design of a single phase power factor correction (PFC) scheme using a DC-DC single ended primary inductance converter with genetic algorithm (GA)-tuned proportional integral (PI) controllers. A systematic off-line design approach using GA for optimising the parameters of the PI controller is proposed and the performance is compared with the conventional Z-N tuned PI controller. The steady-state and transient responses of the converter subjected to a change in the load, set point and line variations are investigated. The performance analysis of the proposed converter in continuous conduction mode is made for the above-mentioned methods using Matlab/Simulink-based simulation studies and experimental set up. Results reveal that the GA-tuned PI controller yields superior performance to the Z-N tuned PI controller in terms of power factor, percentage total harmonic distortion, regulated output voltage for the variations in line, load and efficient tracking of output voltage for a change in the reference voltage.

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“…The converter operation can be divided into two modes, i.e. switch ON stage and switch OFF stage [23–25].…”

Section: Modelling and Design Of Reduced Order Model Of Dc–dc Sepicmentioning

confidence: 99%

Analysis and design of single phase power factor correction with DC–DC SEPIC Converter for fast dynamic response using genetic algorithm optimised PI controller

Durgadevi

Umamaheswari

2017

IET Circuits, Devices & Systems

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“…Opration mode during negative half-line cycle same as the positive half-line cycle. Detail description operation mode and analysis of bridgeless SEPIC topology of the project has been discussed in [15] [16].…”

Section: A Converter Topologymentioning

confidence: 99%

A bridgeless PFC converter for on-board battery charger

Kong

Aziz

Sahid

et al. 2014

2014 IEEE Conference on Energy Conversion (CENCON)

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This paper presents a bridgeless SEPIC topology with Power Factor Correction (PFC) to charge electric vehicle battery. The converter offers a few advantages such as reduce total component count and reduction of conduction loss during the conversion AC to DC, hence higher overall system efficiency. The PFC converter operated under continuous conduction mode (CCM) with average current mode control strategy. The model is built and simulated in MATLAB. From the simulation study, it is found that the proposed topology and the proposed control strategy provide a promising result.

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“…The electromagnetic micro-generators have the highest energy density and in the presented AC DC bridgeless converter, energy is extracted from an electromagnetic system [3], [5], [30], [44]. The electromagnetic generators are spring mass damper based systems where small magnitude ambient mechanical vibrations are amplified and the motion is converted to electrical energy by electromagnetic coupling [3], [29]. The micro-generator used is one such electromagnetic system [10], [18].…”

Section: Introductionmentioning

confidence: 99%

“…Just as electromagnetic generators, the micro-scale electrostatic or capacitive forces have become quite significant and several methods have been devised to generate electrical energy from capacitive sources [25]. A piezoelectric material can produce an electric potential, high voltage (low current) when it is put under strain that can be either compressing or deflecting [21], [3], [15], [18], and [29]. Conventional power processing circuits that consist of two stages bridge rectification have been developed earlier for energy harvesting but, these converters proved be inefficient for the micro volts application.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Low Voltage Bridgeless AC DC Energy Conversion

Bajpai¹,

Sharma²

2016

International Journal of Innovative Research in Electrical, Ele

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Abstract:The energy source for energy harvesting micro-generators is present as ambient background. Energy harvesting micro generator provide a very small amount of power for low-energy electronic devices. This paper presents the analysis of electromagnetic resonant micro-generator for the low voltage bridgeless AC DC energy conversion. The proposed converter model uses parallel connected boost and buck-boost converters to step up and rectify the low AC voltage fed from the micro-generator output to higher DC voltage to be fed to an electronic load. The positive and negative half cycle of the AC voltage obtained by the micro-generator is processed by the boost and the buck-boost converters respectively. Detailed analysis of the boost and the buck boost converter of the proposed model are carried out to suit the specifications of the micro-generator output and the load.

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A new AC-DC converter using bridgeless SEPIC

Cited by 56 publications

References 6 publications

Analysis and design of single phase power factor correction with DC–DC SEPIC Converter for fast dynamic response using genetic algorithm optimised PI controller

Analysis and design of single phase power factor correction with DC–DC SEPIC Converter for fast dynamic response using genetic algorithm optimised PI controller

A bridgeless PFC converter for on-board battery charger

Analysis of Low Voltage Bridgeless AC DC Energy Conversion

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