Grid-Tied PV Inverter Based on Interleaved Flyback Converter

Chewale, Mangesh A.; Savakhande, V.B.; Wanjari, R.A.; Sonawane, Pravin R.

doi:10.1109/iccpcct.2018.8574338

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…Part of the magnetizing current is stored in the leakage inductor and flows into the snubber circuit. The voltage in the leakage inductance (Equation ( 7)) allows to define the snubber capacitor voltage expression in Equation (8). At t = t 1 , the current in the snubber capacitor decreases to zero.…”

Section: Stage 2: T On < T ≤ Tmentioning

confidence: 99%

“…Several articles in the literature report the application of flyback converters to PV systems [8][9][10][11][12][13][14][15][16]. Most of these works are based on an interleaved topology that consists of splitting a full converter into several standard flyback cells, each managing a part of the converter overall power [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…An input-parallel output-parallel (IPOP) interleaved flyback converter is presented in [8], where two flyback cells are considered, and a single-phase inverter is connected between the DC/DC stage and the grid. The reduction of the current ripple as well as the reduction of the size of the passive elements are mentioned as a contribution.…”

Section: Introductionmentioning

confidence: 99%

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A Modified Multi-Winding DC–DC Flyback Converter for Photovoltaic Applications

et al. 2021

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DC–DC power converters have generated much interest, as they can be used in a wide range of applications. In micro-inverter applications, flyback topologies are a relevant research topic due to their efficiency and simplicity. On the other hand, solar photovoltaic (PV) systems are one of the fastest growing and most promising renewable energy sources in the world. A power electronic converter (either DC/DC or DC/AC) is needed to interface the PV array with the load/grid. In this paper, a modified interleaved-type step-up DC–DC flyback converter is presented for a PV application. The topology is based on a multi-winding flyback converter with N parallel connected inputs and a single output. Each input is supplied by an independent PV module, and a maximum power point tracking algorithm is implemented in each module to maximize solar energy harvesting. A single flyback transformer is used, and it manages only 1/N of the converter rated power, reducing the size of the magnetic core compared to other similar topologies. The design of the magnetic core is also presented in this work. Moreover, the proposed converter includes active snubber networks to increase the efficiency, consisting of a capacitor connected in series with a power switch, to protect the main switches from damaging dv/dt when returning part of the commutation energy back to the source. In this work, the operating principle of the topology is fully described on a mathematical basis, and an efficiency analysis is also included. The converter is simulated and experimentally validated with a 1 kW prototype considering three PV panels. The experimental results are in agreement with the simulations, verifying the feasibility of the proposal.

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Section: Stage 2: T On < T ≤ Tmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Modified Multi-Winding DC–DC Flyback Converter for Photovoltaic Applications

et al. 2021

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“…The performance of the converter with multilevel converter cells has not been further explored in the literature. However, interleaved, high power, flyback topologies have been proposed for PV grid-tied inverters which promotes their use in multilevel topologies [60,61].…”

Section: A Submodule Circuit Topologymentioning

confidence: 99%

Medium Voltage Large-Scale Grid-Connected Photovoltaic Systems Using Cascaded H-Bridge and Modular Multilevel Converters: A Review

et al. 2020

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Medium-voltage (MV) multilevel converters are considered a promising solution for large scale photovoltaic (PV) systems to meet the rapid energy demand. This paper focuses on reviewing the different structures and the technical challenges of modular multilevel topologies and their submodule circuit design for PV applications. The unique structure of the converter's submodule provides modularity, independent control of maximum power point tracking (MPPT), galvanic isolation, etc. Different submodule circuits and MPPT methods to efficiently extract the PV power are reviewed. The integration of the multilevel converters to PV systems suffers unbalanced power generation during partial PV shading conditions. Several balancing strategies to solve this problem are presented and compared to give a better understanding of the balancing ranges and capabilities of each strategy. In addition, the paper discusses recent research advancements, and possible future directions of MV converters-based large-scale PV systems for grid integration.

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Design of Switching Regulated Power Supply Based on Flyback

Zhu,

2024

Lecture Notes in Electrical Engineering

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Grid-Tied PV Inverter Based on Interleaved Flyback Converter

Cited by 5 publications

References 8 publications

A Modified Multi-Winding DC–DC Flyback Converter for Photovoltaic Applications

A Modified Multi-Winding DC–DC Flyback Converter for Photovoltaic Applications

Medium Voltage Large-Scale Grid-Connected Photovoltaic Systems Using Cascaded H-Bridge and Modular Multilevel Converters: A Review

Design of Switching Regulated Power Supply Based on Flyback

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