A Modified Step-Up DC-DC Flyback Converter with Active Snubber for Improved Efficiency

Pesce, Cristián; Riedemann, Javier; Peña, R.; Jara, Werner; Maury, Camilo; Villalobos, Rodrigo

doi:10.3390/en12112066

Cited by 12 publications

(11 citation statements)

References 21 publications

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“…However, it has a higher ripple current and higher input and output capacitance. Also, its efficiency is typically between 75% to 80% [36]. The voltage source inverter feeds current into the single-phase grid and local singlephase loads.…”

Section: Case Studymentioning

confidence: 99%

PV Systems Control Using Fuzzy Logic Controller Employing Dynamic Safety Margin under Normal and Partial Shading Conditions

et al. 2021

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Because of the unpredictable activity of solar energy sources, photovoltaic (PV) maximum power point tracking (MPPT) is essential to guarantee the continuous operation of electrical energy generation at optimal power levels. Several works have extensively examined the generation of the maximum power from the PV systems under normal and shading conditions. The fuzzy logic control (FLC) method is one of the effective MPPT techniques, but it needs to be adapted to work in partial shading conditions. The current paper presents the FLC-based on dynamic safety margin (DSM) as an MPPT technique for a PV system to overcome the limitations of FLC in shading conditions. The DSM is a performance index that measures the system state deviation from the normal situation. As a performance index, DSM is used to adapt the FLC controller output to rapidly reach the global maxima of the PV system. The ability of the proposed algorithm and its performance are evaluated using simulation and practical implementation results for single phase grid-connected PV system under normal and partial shading operating conditions.

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Section: Case Studymentioning

confidence: 99%

PV Systems Control Using Fuzzy Logic Controller Employing Dynamic Safety Margin under Normal and Partial Shading Conditions

et al. 2021

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“…A point by point investigation and operation of flyback converter and boost converter has been talked about. Author in [6,7], reported low voltage flyback DC-DC converter for power supply application. The converter was utilized as one-sided control supply to drive the IGBTs.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Switched-Mode Flyback DC-DC Converter with Influence of Non-Ideal Switching Devices

Kamar,

Azmi,

Isa

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This paper approach for the performance analysis of a dc-dc flyback converter for low power application. Modelling is done with parasitic components for non-ideal flyback converter. Ac and dc input characteristic of the flyback converter are analysed and investigated by PSIM simulations and calculations. The influence of parasitic effects in converter components on input characteristic is studied in continuous conduction mode (CCM). The results of the calculation based on analytical formula and averaged models are in a good accordance with PSIM simulations and calculation. The goal of this project is to compare an ideal and non-ideal condition in order to see the effect on the efficiency and ability of the converter to control the output voltage. The converter is expected to be operated in continuous conduction mode at all time and focus application is low power application that less than 100W.

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“…A fly-back converter is the most commonly used isolated converter. Its subtypes are active clamp fly-back converter, an inverted fly-back converter, a fly-back converter with RCD snubber, two switches fly-back converter, and dual ac-dc fly-back converter [18]. A hybrid converter consists of a push-pull circuit on the output side, and a full-bridge circuit on the input side is proposed [19].…”

Section: Introductionmentioning

confidence: 99%

A Robust MPPT Control Based on Double Ended Forward Converter Architecture

Khan¹,

Hasan²,

Murtaza³

et al. 2022

Computers, Materials &Amp; Continua

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In this paper, a stand-alone photovoltaic (PV) system based on a Double Ended Forward Converter (DEFC) is presented. The proposed converter is specified for 48 V, 100 W applications as most of the equipment used in telecommunication and aircraft fall in this range. The literature has limited potential application of DEFC in PV systems. The research work deals with an in-depth study of DEFC and proposes an improved DEFC for PV applications with battery backup. Besides, a bi-directional dc-dc converter for the battery is integrated to track the Maximum Power Point (MPP) of the PV generator. The converter is examined under variable irradiance and load conditions, and the analytical analysis of boundary conditions are implemented. The converter's architecture also ensures built-in I-V curve tracing for the identification of MPP of PV generator. It offers low voltage stresses across switches and avoids sinking power supply and core resetting circuits. The topology's behavior is analyzed based on MPP achievement and maintaining output under different conditions of battery backup availability, environmental, and load conditions. The PV system architecture is designed and analyzed theoretically and verified with simulations on the PSIM software.

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A Modified Step-Up DC-DC Flyback Converter with Active Snubber for Improved Efficiency

Cited by 12 publications

References 21 publications

PV Systems Control Using Fuzzy Logic Controller Employing Dynamic Safety Margin under Normal and Partial Shading Conditions

PV Systems Control Using Fuzzy Logic Controller Employing Dynamic Safety Margin under Normal and Partial Shading Conditions

Performance Analysis of a Switched-Mode Flyback DC-DC Converter with Influence of Non-Ideal Switching Devices

A Robust MPPT Control Based on Double Ended Forward Converter Architecture

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