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 Formation Tracking Control and Obstacle Avoidance of Unicycle-Type Robots Guaranteeing Continuous Velocities

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4374
Author(s):  
Jose Bernardo Martinez ◽  
Hector M. Becerra ◽  
David Gomez-Gutierrez
Keyword(s):  
Obstacle Avoidance ◽  
Tracking Control ◽  
Global Coordinate System ◽  
Avoidance Task ◽  
Time Varying ◽  
Control Laws ◽  
Formation Tracking ◽  
Control Scheme ◽  
First Time ◽  
Hierarchical Scheme

In this paper, we addressed the problem of controlling the position of a group of unicycle-type robots to follow in formation a time-varying reference avoiding obstacles when needed. We propose a kinematic control scheme that, unlike existing methods, is able to simultaneously solve the both tasks involved in the problem, effectively combining control laws devoted to achieve formation tracking and obstacle avoidance. The main contributions of the paper are twofold: first, the advantages of the proposed approach are not all integrated in existing schemes, ours is fully distributed since the formulation is based on consensus including the leader as part of the formation, scalable for a large number of robots, generic to define a desired formation, and it does not require a global coordinate system or a map of the environment. Second, to the authors’ knowledge, it is the first time that a distributed formation tracking control is combined with obstacle avoidance to solve both tasks simultaneously using a hierarchical scheme, thus guaranteeing continuous robots velocities in spite of activation/deactivation of the obstacle avoidance task, and stability is proven even in the transition of tasks. The effectiveness of the approach is shown through simulations and experiments with real robots.

scholarly journals High Speed Electrical Drives – Perspective of VFD Manufacturer

2020 ◽  
Vol 178 ◽  
pp. 01006
Author(s):  
Martin Bruha ◽  
Kai Pietiläinen ◽  
Axel Rauber
Keyword(s):  
High Speed ◽  
Technology Readiness ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Medium Voltage ◽  
Electrical Drives ◽  
Standard Design ◽  
Motor Design ◽  
High Level ◽  
Power Electronic Converter

This paper deals with high-speed electrical drives utilizing power electronic converters (commonly abbreviated as ASD, VFD or VSD). Existing solutions vary mainly on the motor side while the power electronic converter is very similar for all cases. Various advantages as well as technical challenges are discussed and illustrated. At certain stages comparisons between conventional and high-speed drives are made. The paper summarizes the experience of a VFD manufacturer based on state of the art technology in medium voltage and multi-megawatt power range. The authors believe that main complexity around high-speed drives is the motor design while the VFD requires only small adaptations or can sometimes be used directly without any modifications of standard design. The technology readiness is evaluated to be on a medium to high level.

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 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.

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 A Unified Approach for the Control of Power Electronics Converters. Part II: Tracking

2021 ◽  
Vol 11 (16) ◽  
pp. 7618
Author(s):  
Germain Garcia ◽  
Oswaldo Lopez-Santos ◽  
Luis Martinez-Salamero
Keyword(s):  
Tracking Control ◽  
Research Work ◽  
Reference Signal ◽  
Control Problems ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Unified Approach ◽  
Power Electronics Converters ◽  
Mathematical Properties ◽  
Ac Converters

This paper extends the results recently proposed in Part I of this research work focused on the stabilization of power electronic converters. This second part is devoted to cases in which the underlying control problems can be translated into tracking control problems. This is the case for DC-AC converters whose output must track a sinusoidal reference signal. The idea is to tackle the problem in a unified manner in order to avoid as much as possible the use of approximations and to exploit all the mathematical properties of the corresponding switched models. The case in which measurable or non-measurable perturbations are present is considered. The proposed techniques are illustrated for two particular DC-AC converters simulated using the PSIM software.

AC/DC Conversion

2010 ◽  
pp. 50-97
Keyword(s):  
Reactive Power ◽  
Electrical Power ◽  
Active Power Filter ◽  
Power Converter ◽  
Active Power ◽  
Total Power ◽  
Power Electronic ◽  
Power Filter ◽  
Power Electronic Converter ◽  
Phase Number

Figure 1 displays a power electronic converter connected to the mains. In general, a power electronic converter is an electrical power converter – controlled or uncontrolled rectifier, AC regulator, compensator of reactive power, converter of phase number, active power filter. The converter supplies a load with power Pout, and in the same time it loads the mains with active power P and total power S.

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.

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