Repositorio
Institucional

Pesce, Cristian

Riedemann, Javier

Pena, Ruben

Degano, Michele

Pereda, Javier

Villalobos, Rodrigo

Maury, Camilo

Young, Hector

Andrade, Ivan

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

MDPI

APPLIED SCIENCES-BASEL

en

Featured Application This topology is applied to photovoltaic generation conversion using multiple panels and a single magnetic core, using MPPT and obtaining an efficiency over 96%. 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.

artículo original

10.3390/app112411999

PDF

DC-DC power conversion

solar energy

energy conversion

multi-winding flyback transformer

POWER

INVERTER

MPPT

SYSTEM

Química Multidisciplinaria

Ingeniería Multidisciplinaria

Ciencia de Materiales

Multidisciplinaria

Física Aplicada

Conversión de energía DC-DC

energía solar

conversión de energía

transformador flyback de múltiples devanados

PODER

INVERSOR

MPPT

SISTEMA

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

artículo original

version publicada

CC BY 4.0

CC BY 4.0

acceso abierto

acceso abierto

WOS:000735475400001