Boost current multilevel inverter and its application on single-phase grid-connected photovoltaic systems

This work presents a novel current multilevel (CML) inverter topology, named boost CML inverter, and its application on energy processing of single-phase grid-connected photovoltaic (PV) systems. The structure allows a high power factor operation of a PV system, injecting a quasi-sinusoidal current...

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Veröffentlicht in:IEEE transactions on power electronics 2006-07, Vol.21 (4), p.1116-1124
Hauptverfasser: Barbosa, Pedro Gomes, Carvalho Braga, Henrique Antonio, Carmo Barbosa Rodrigues, Marcio Do, Teixeira, Estevao Coelho
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container_issue 4
container_start_page 1116
container_title IEEE transactions on power electronics
container_volume 21
creator Barbosa, Pedro Gomes
Carvalho Braga, Henrique Antonio
Carmo Barbosa Rodrigues, Marcio Do
Teixeira, Estevao Coelho
description This work presents a novel current multilevel (CML) inverter topology, named boost CML inverter, and its application on energy processing of single-phase grid-connected photovoltaic (PV) systems. The structure allows a high power factor operation of a PV system, injecting a quasi-sinusoidal current into the grid, with virtually no displacement in relation to the line voltage at the point of common coupling among the PV system and the loads. The major appeals of using the CML technique are the balanced current sharing among semiconductor switches and the decrease of the current slope in the circuit devices, with a consequent reduction of conducted and radiated electromagnetic interference (EMI). The CML technique also allows adapting or minimizing current waveforms harmonic content. System description, mathematical approach, and design guidelines are presented, providing an overview of the new topology. In order to validate the proposed concepts, experimental measurements, made in a small-scale laboratory prototype, are also presented. The obtained results evidence the feasibility of the application of this new topology on singlephase grid-connected PV systems.
doi_str_mv 10.1109/TPEL.2006.876784
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1941-0107
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source IEEE Electronic Library (IEL)
subjects Applied sciences
Circuits
Current multilevel (CML) inverter topology
Current sharing
Electric currents
Electric power
Electrical engineering. Electrical power engineering
Electromagnetic interference
electromagneticinterference (EMI)
Electronics
Exact sciences and technology
Harmonic analysis
Inductors
Inverters
Line voltage
Multilevel
photovoltaic (PV) systems
Photovoltaic cells
Photovoltaic systems
Power electronics, power supplies
Power factor
Pulse width modulation
Semiconductors
Solar cells
Solar energy
Switches
Topology
Waveforms
title Boost current multilevel inverter and its application on single-phase grid-connected photovoltaic systems
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