A New Hybrid Inductor-Based Boost DC-DC Converter Suitable for Applications in Photovoltaic Systems

A new hybrid step-up converter suitable in applications where large conversion ratios are needed is presented. The topology is still simple, containing only one transistor and three diodes. A detailed dc and ac analysis is performed and all design equations are provided. Compared to other topologies...

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Bibliographic Details
Published in:Energies (Basel) 2019-01, Vol.12 (2), p.252
Main Authors: Pop-Calimanu, Ioana-Monica, Lica, Septimiu, Popescu, Sorin, Lascu, Dan, Lie, Ioan, Mirsu, Radu
Format: Article
Language:English
Subjects:
Algorithms
Alternative energy sources
Boost DC-DC converter
Computer simulation
Conduction
Conduction losses
Control systems design
Converters
Diodes
Direct current
Electric appliances
Electric potential
Household appliances
International conferences
maximum power point tracking
Photovoltaic cells
photovoltaic system
Photovoltaics
Renewable resources
simulation
state space modeling
State space models
steady state analysis
Topology
Transfer functions
Transistors
Transportation
Voltage
Voltage converters (DC to DC)
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Summary:A new hybrid step-up converter suitable in applications where large conversion ratios are needed is presented. The topology is still simple, containing only one transistor and three diodes. A detailed dc and ac analysis is performed and all design equations are provided. Compared to other topologies of the same type, the proposed converter exhibits lower or equal current and voltage stresses. A state space model is provided including the conduction losses and based on it the audio susceptibility and the control to output function are derived. As the converter is still of second order with the control to output transfer function exhibiting a right half plane zero, controller design is practically the same like in a Boost topology. It is shown how the proposed converter can be used in a photovoltaic system for performing the maximum power point tracking algorithm using the perturb and observe method. All theoretical considerations are verified through simulation and finally validated by practical experiments.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12020252