scholarly journals On the Existence and Uniqueness of the ODE Solution and Its Approximation Using the Means Averaging Approach for the Class of Power Electronic Converters

Mathematics ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1146
Author(s):  
Santolo Meo ◽  
Luisa Toscano
Keyword(s):  
Local Existence ◽  
Experimental Tests ◽  
Power Converter ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Effective System ◽  
The Cauchy Problem ◽  
Analytical Proof ◽  
Power Electronics Converter ◽  
Averaged Model

Power electronic converters are mathematically represented by a system of ordinary differential equations discontinuous right-hand side that does not verify the conditions of the Cauchy-Lipschitz Theorem. More generally, for the properties that characterize their discontinuous behavior, they represent a particular class of systems on which little has been investigated over the years. The purpose of the paper is to prove the existence of at least one global solution in Filippov’s sense to the Cauchy problem related to the mathematical model of a power converter and also to calculate the error in norm between this solution and the integral of its averaged approximation. The main results are the proof of this theorem and the analytical formulation that provides to calculate the cited error. The demonstration starts by a proof of local existence provided by Filippov himself and already present in the literature for a particular class of systems and this demonstration is generalized to the class of electronic power converters, exploiting the non-chattering property of this class of systems. The obtained results are extremely useful for estimating the accuracy of the averaged model used for analysis or control of the effective system. In the paper, the goodness of the analytical proof is supported by experimental tests carried out on a converter prototype representing the class of power electronics converter.

EMC Issues of Low Frequency Interference of Power Electronic Converters

2013 ◽  
Vol 284-287 ◽  
pp. 2516-2520 ◽  
Author(s):  
Pavel Drabek ◽  
Vaclav Kus
Keyword(s):  
Low Frequency ◽  
Power Converter ◽  
Experimental Results ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Converter Topologies ◽  
Physical Background

Power electronic converters produce not only characteristic harmonics, but also both non-characteristic harmonics and interharmonics. This paper presents the physical background of both non-characteristic harmonics and interharmonics. Generation causes are explored and discussed in detail. Extensive series of simulation of different power converter topologies are provided and compared with experimental results and existing standards. This research offers missing background for standards covering low-frequency EMC.

scholarly journals Evaluation of Modular Power Converter Integrated with 5G Network

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7355
Author(s):  
Sebastian Baba ◽  
Serafin Bachman ◽  
Marek Jasinski ◽  
Hong Li
Keyword(s):  
Data Transfer ◽  
State Of The Art ◽  
Power Converter ◽  
Power Electronic ◽  
Test Results ◽  
Proof Of Concept ◽  
Power Electronic Converters ◽  
Wireless Data ◽  
5G Network ◽  
Tremendous Impact

This paper focuses on two key technical concepts, which may have a tremendous impact on future generations of power electronic converters: the Power Electronic Building Block (PEBB) concept, and the 5G/6G wireless data transfer. It is expected that these two trends may induce development of new cognitive of power electronic converters: Power Electronics 4.0. To investigate this concept, a Proof of Concept (PoC) of PEBB-based power converter integrated with a 5G network, was designed and tested. Study confirmed that power converter assembled from PEBB modules can compete with state-of-the-art devices. Moreover, test results indicates that several challenges related to PEBB and integration of power electronic equipment with 5G network has to be resolved, to enable growth of augmented power electronic converters, especially if wireless data transfer is meant for communication between PEBB modules.

scholarly journals Impact of Control Loops on the Passivity Properties of Grid-Forming Converters with Fault-Ride through Capability

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6036
Author(s):  
Mebtu Beza ◽  
Massimo Bongiorno ◽  
Anant Narula
Keyword(s):  
Renewable Energy Sources ◽  
Experimental Tests ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Input Admittance ◽  
Factors Affecting ◽  
Control Loops ◽  
Fault Ride Through ◽  
Main Factors ◽  
The Impact

Due to the increasing integration of renewable energy sources (RES) and a corresponding reduction of conventional generating units, there is nowadays a demand from the power-electronic converters to provide grid-forming properties through proper control of the converter systems. This paper aims to evaluate the impact of various control loops in a grid-forming control strategy equipped with a fault-ride through capability on the passivity properties of the converter system. Through the analysis of the frequency-dependent input admittance of the converter, the main factors affecting the passivity properties are identified. A simplified analytical model is derived in order to propose possible control modifications to enhance the system’s passivity at various frequencies of interest and the findings are validated through detailed time-domain simulations and experimental tests.

scholarly journals Path-Tracking of a WMR Fed by Inverter-DC/DC Buck Power Electronic Converter Systems

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6522
Author(s):  
Victor Manuel Hernández-Guzmán ◽  
Ramón Silva-Ortigoza ◽  
Salvador Tavera-Mosqueda ◽  
Mariana Marcelino-Aranda ◽  
Magdalena Marciano-Melchor
Keyword(s):  
Tracking Control ◽  
Power Converter ◽  
Path Tracking ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Dc Motors ◽  
Formal Stability ◽  
Control Scheme ◽  
First Time ◽  
Power Electronic Converter

This paper is concerned with path-tracking control of a wheeled mobile robot. This robot is equipped with two permanent magnet brushed DC-motors which are fed by two inverter-DC/DC Buck power converter systems as power amplifiers. By taking into account the dynamics of all the subsystems we present, for the first time, a formal stability proof for this control problem. Our control scheme is simple, in the sense that it is composed by four internal classical proportional-integral loops and one external classical proportional-derivative loop for path-tracking purposes. This is the third paper of a series of papers devoted to control different nonlinear systems, which proves that the proposed methodology is a rather general approach for controlling electromechanical systems when actuated by power electronic converters.

scholarly journals Performance Analysis of Various Phases of SRM with Classical and New Compact Converter

2015 ◽  
Vol 16 (2) ◽  
pp. 256
Author(s):  
S.M. Mohamed Saleem ◽  
L. Senthil Murugan
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Power Converter ◽  
Rotary Compressor ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Switched Reluctance ◽  
Switching Losses ◽  
Reluctance Motor ◽  
Converter Topology

In recent years, considerable attention has been given to find the compact and low cost power converter topology for Switched Reluctance Motor (SRM) drive to meet the emerging applications such as plotters, fans, pumps, screw rotary compressor drives, high speed application drives above 30,000 RPM. This paper is concerned with such as attempt to formulate a new compact power converter for SRM drive. The proposed power converter has reduced number of power electronic components which makes the converter compact and also reduce the switching losses. The power factor plays a vital issue in the usage of power electronic converters. The power boost converter and PI controller. A Simulink system is developed for 3Φ SRM by using MATLAB software. The proposed converter performance is compared with the classical converter and analysis results are presented.<strong> </strong>

scholarly journals A Review of the Power Converter Interfaces for Switched Reluctance Machines

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3490
Author(s):  
Vitor Fernão Pires ◽  
Armando José Pires ◽  
Armando Cordeiro ◽  
Daniel Foito
Keyword(s):  
Failure Modes ◽  
Fault Tolerant ◽  
Control Strategies ◽  
Research Work ◽  
Power Converter ◽  
Future Research ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Switched Reluctance ◽  
Switched Reluctance Machines

The use of power electronic converters is essential for the operation of Switched Reluctance Machines (SRMs). Many topologies and structures have been developed over the last years considering several specific applications for this kind of machine, improving the control strategies, performance range, fault-tolerant operation, among other aspects. Thus, due to the great importance of power electronic converters in such applications, this paper is focused on a detailed review of main structures and topologies for SRM drives. The proposed study is not limited to the classic two-level power converters topologies dedicated to the SRMs; it also presents a review about recent approaches, such as multilevel topologies and based on impedance source network. Moreover, this review is also focused on a new class of topologies associated to these machines, namely the ones with fault-tolerant capability. This new category of topologies has been a topic of research in recent years, being currently considered an area of great interest for future research work. An analysis, taking into consideration the main features of each structure and topology, was addressed in this review. A classification and comparison of the several structures and topologies for each kind of converter, considering modularity, boost capability, number of necessary switches and phases, integration in the machine design, control complexity, available voltage levels and fault-tolerant capability to different failure modes, is also presented. In this way, this review also includes a description of the presented solutions taking into consideration the reliability of the SRM drive.

scholarly journals Review of impedance source power converter for electrical applications

2021 ◽  
Vol 10 (4) ◽  
pp. 310
Author(s):  
V Saravanan ◽  
K M Venkatachalam ◽  
M Arumugam ◽  
M.A.K. Borelessa ◽  
K.T. M.U. Hemapala
Keyword(s):  
Power Systems ◽  
Lower Cost ◽  
Control Strategies ◽  
Power Converter ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Comprehensive Overview ◽  
Source Power ◽  
The Past ◽  
Wind Power Systems

<p>Power electronic converters have been actively researched and developed over the past decades. There is a growing need for new solutions and topography to increase the reliability and efficiency of alternatives with lower cost, size and weight. Resistor source converter is one of the most important power electronic converters that can be used for AC-DC, AC-AC, DC-DC and DC-DC converters which can be used for various applications such as photovoltaic systems, wind power systems, electricity. Vehicles and fuel cell applications. This article provides a comprehensive overview of Z-source converters and their implementation with new configurations with advanced features, emerging control strategies and applications.</p>

scholarly journals A Simple Mismatch Mitigating Partial Power Processing Converter for Solar PV Modules

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2308
Author(s):  
Kamran Ali Khan Niazi ◽  
Yongheng Yang ◽  
Tamas Kerekes ◽  
Dezso Sera
Keyword(s):  
Experimental Tests ◽  
Energy Yield ◽  
Power Electronic ◽  
Solar Pv ◽  
Partial Shading ◽  
Loss Analysis ◽  
Pv Systems ◽  
Pv Module ◽  
Pv Modules ◽  
In Series

Partial shading affects the energy harvested from photovoltaic (PV) modules, leading to a mismatch in PV systems and causing energy losses. For this purpose, differential power processing (DPP) converters are the emerging power electronic-based topologies used to address the mismatch issues. Normally, PV modules are connected in series and DPP converters are used to extract the power from these PV modules by only processing the fraction of power called mismatched power. In this work, a switched-capacitor-inductor (SCL)-based DPP converter is presented, which mitigates the non-ideal conditions in solar PV systems. A proposed SCL-based DPP technique utilizes a simple control strategy to extract the maximum power from the partially shaded PV modules by only processing a fraction of the power. Furthermore, an operational principle and loss analysis for the proposed converter is presented. The proposed topology is examined and compared with the traditional bypass diode technique through simulations and experimental tests. The efficiency of the proposed DPP is validated by the experiment and simulation. The results demonstrate the performance in terms of higher energy yield without bypassing the low-producing PV module by using a simple control. The results indicate that achieved efficiency is higher than 98% under severe mismatch (higher than 50%).

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