scholarly journals Analysis of Discontinuity Induced Bifurcations in a Dual Input DC-DC Converter

2015 ◽  
Vol 25 (05) ◽  
pp. 1550071 ◽  
Author(s):  
Damian Giaouris ◽  
Soumitro Banerjee ◽  
Kuntal Mandal ◽  
Mohammed M. Al-Hindawi ◽  
Abdullah Abusorrah ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Current Mode ◽  
Power Converter ◽  
Multiple Sources ◽  
Single Output ◽  
Dc Power ◽  
Bifurcation Phenomena ◽  
Discontinuous Map ◽  
Converter Topology ◽  
First Time

DC-DC power converters with multiple inputs and a single output are used in numerous applications where multiple sources, e.g. two or more renewable energy sources and/or a battery, feed a single load. In this work, a classical boost converter topology with two input branches connected to two different sources is chosen, with each branch independently being controlled by a separate peak current mode controller. We demonstrate for the first time that even though this converter is similar to other well known topologies that have been studied before, it exhibits many complex nonlinear behaviors that are not found in any other standard PWM controlled power converter. The system undergoes period incrementing cascade as a parameter is varied, with discontinuous hard transitions between consecutive periodicities. We show that the system can be described by a discontinuous map, which explains the observed bifurcation phenomena. The results have been experimentally validated.

Study and Implementation of Partial Resonant High-Frequency AC-Link Inverter Operating in Soft-Switching Condition

2021 ◽  
pp. 2150238
Author(s):  
Abdelkarim Aouiti ◽  
Hajer Marzougui ◽  
Faouzi Bacha
Keyword(s):  
High Frequency ◽  
Power Flow ◽  
Power Converter ◽  
Soft Switching ◽  
Correct Operation ◽  
Fundamental Properties ◽  
Dc Power ◽  
Dspace 1104 ◽  
Converter Topology ◽  
High Frequency Ac

In this paper, a high-frequency AC-link DC–AC converter is presented with detailed analysis. This converter is used as an interface between a dc power source and a grid. The studied converter is a universal power converter which consists of two bridges separated by an AC-link; each bridge is connected to a source or it feeds a load. The link of this converter contains a parallel pair inductance-capacitor. The inductance is used to stock/supply energy and for the link capacitor, it allows to perform soft switching during turning on/turning off of the switches. The studied converter has considerable advantages compared to the other topologies. Its fundamental properties are, especially, the compactness, reliability and efficiency which it ensures. Also, it guarantees longer lifetime and the possibility to transfer power in the two power flow directions. In this talk, the principles of the ac-link inverter operation are clearly explained in this paper. Simulation results, under MATLAB/SIMULINK, are shown to validate the correct operation and the efficiency of the proposed converter topology. The control algorithm is, also, experimentally implemented using a dSPACE 1104 control board.

scholarly journals Reduced Switch Multilevel Inverter Topologies And Modulation Techniques For Renewable Energy Applications

2021 ◽  
Vol 12 (3) ◽  
pp. 4659-4670
Author(s):  
Ujwala Gajula Et.al
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Medium Voltage ◽  
Multilevel Inverters ◽  
Energy Applications ◽  
Converter Topology ◽  
Overall Performance

Multilevel inverters (MLIs) have been extensively used and gained interest over last few decades in industrial and grid connected renewable energy applications because of its numerous merits. Besides various advantages like obtaining reduced harmonic distortion and lesser dv/dt stress across switches it has the capability of generating any number of levels. The theory of multilevel concept was initiated for high power and high/medium voltage applications as they are helpful in interfacing with renewable energy sources. By proper combination of the switches it generates a stair case output with reduced harmonic distortion because of this MLI is widely used and it became one of the advanced power converter topology. The rise of new topologies has attained importance over conventional multilevel inverter topologies, which generates more number of levels with reduced switch components. This paper presents various conventional MLI topologies and hybrid MLI topologies for renewable energy applications. Also, this review paper includes different modulation strategies which plays an important role to improve the overall performance of MLI.

scholarly journals A Survey on Bidirectional DC/DC Power Converter Topologies for the Future Hybrid and All Electric Aircrafts

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4883
Author(s):  
Álvaro Ojeda-Rodríguez ◽  
Pablo González-Vizuete ◽  
Joaquín Bernal-Méndez ◽  
María A. Martín-Prats
Keyword(s):  
Power Density ◽  
Power Distribution ◽  
Distribution Systems ◽  
High Efficiency ◽  
Low Voltage ◽  
Power Level ◽  
Power Converter ◽  
Dc Power ◽  
Converter Topologies ◽  
Converter Topology

DC-DC isolated converters allowing a bidirectional flow of energy between High-Voltage DC and Low-Voltage DC networks have been proposed to be integrated in future on board power distribution systems. These converters must meet the specially stringent efficiency and power density requirements that are typical of the aeronautic industry. This makes it specially challenging to determine which converter topology is best suited for each particular application. This work presents a thorough review of several topologies of bidirectional DC-DC power converters that are considered good candidates to meet certain important aeronautic requirements, as those related with high efficiency and high power density. We perform simulations on virtual prototypes, constructed by using detailed component models, and optimized following design criteria that are in accordance with those typically imposed by aeronautic requirements. This comparative analysis is aimed to clearly identify the advantages and drawbacks of each topology, and to relate them with the required voltage and power levels. As an outcome, we point out the topologies that, for the required power level at the chosen switching frequencies, yield higher efficiency in the whole range of required operation points and that are expected to allow more important weight reductions.

Research on Forward DC-DC Converter with High Power

2014 ◽  
Vol 978 ◽  
pp. 63-66 ◽  
Author(s):  
Rong Wang ◽  
Heng Chen ◽  
Teng Fei Lei ◽  
Yun Shi
Keyword(s):  
High Voltage ◽  
Power Converter ◽  
Compensation Circuit ◽  
Dc Power ◽  
Voltage Compensation ◽  
Converter Topology ◽  
Supply Equipment ◽  
Protection Circuit ◽  
The Stability ◽  
A Current

According to the requirements of the aircraft power supply equipment, the high voltage DC-DC power converter module is developed. In this paper, the HVDC (High Voltage DC-DC Converter) topology is studied. The starting circuit is designed based on the control chip TL3844. The components parameters are calculated. An overvoltage protection circuit and a current limiting protection circuit are designed to improve the stability of the system. At the same time voltage compensation circuit is designed to compensate the voltage.

scholarly journals New Multifunctional Isolated Microinverter with Integrated Energy Storage System for PV Applications

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 4016
Author(s):  
Luis A. M. Barros ◽  
Mohamed Tanta ◽  
Tiago J. C. Sousa ◽  
Joao L. Afonso ◽  
J. G. Pinto
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Electrical Energy ◽  
Energy Storage System ◽  
Power Converter ◽  
Photovoltaic Module ◽  
Dc Power ◽  
Power Switches ◽  
Converter Topology ◽  
Battery Energy

This paper proposes a novel multifunctional isolated microinverter which is able to extract the maximum available power from a solar photovoltaic module and inject it into the power grid, while simultaneously charging a battery energy storage system (BESS). The proposed microinverter integrates a novel DC–DC power converter and a conventional DC–AC power converter. The DC–DC power converter is able to send electrical energy to the secondary side of a high-frequency transformer and to the BESS, using only two power switches. Throughout this paper, the converter topology, the operation modes, the control algorithms, and the development of a laboratory prototype of the proposed microinverter are described in detail. Moreover, simulation and experimental results are presented to demonstrate the feasibility of the proposed solution.

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