Search query: Improving the reliability of semiconductor converters for supplying electric drives of exhausters

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abstract: This article analyzes the existing methods of increasing reliability through multiple overstatement of the installed power of electric equipment according to the criterion of minimum total yearly costs. The proposed method of optimization of power circuits of semiconductor converters includes stages of choosing the configuration of power circuits on the basis of the limit of semiconductor switches and choosing the optimal number of phases and redundant units. The distinguishing characteristic of the method is the criterion used, namely, the probability of failure free operation. This new method reduces the cost of installed power of a semiconductor converter compared to the known synthetic method on the level of total annual costs. It is shown that this method has some degree of flexibility; e.g. the development of the element base can be considered on the basis of the corresponding coefficients that depend on the operating temperature of power semiconductor valves. The proposed method can be successfully used in the design of semiconductor converters for supplying powerful electric drives, where, in the general case, the number of phases of a power circuit is not three. In this case, multiphase windings of an electric machine are connected according to a scheme with potential phase separation, which can be considered as an equivalent multiple redundancy system.
author_names: Artyom A Gryzlov

M A Grigor'ev

Azaliya A Imanova
title: Improving the reliability of semiconductor converters for supplying electric drives of exhausters
year: 2017

abstract: This paper deals with increasing the reliability of electric drives of exhausters of the oxygen converter process. The dependences of the reliability parameters in the electrical converter electric motor system on the power reserve were obtained. The costs for the installed equipment were taken as an optimization criterion. It is noted that improving the reliability of an electric drive is possible both by increasing the overall power of the power unit and by changing the number of phases. It is shown that the reliability of the system can be improved in a synchronous electric drive with pulse vector control at the reservation of a semiconductor converter. A mathematical model of the electrical converter reluctance motor with a field regulated machine complex is proposed. The results of the mathematical modeling of the synchronous electric drive with pulse vector control are considered. The dependence of the specific electric parameters on the number of phases is determined.
author_names: M A Grigor'ev

Dmitry Sychev

Artyom M Zhuravlev

Evgeny S Khayatov

Nikita V Savosteenko
title: Improving the reliability of electric drives of exhausters of the oxygen converter process
year: 2015

abstract: With ever increasing concerns on our environment, there is a fast growing interest in electric vehicles (EVs) and hybrid EVs (HEVs) from automakers, governments, and customers. As electric drives are the core of both EVs and HEVs, it is a pressing need for researchers to develop advanced electric drive systems. In this paper, an overview of permanent magnet (PM) brushless (BL) drives for EVs and HEVs is presented, with emphasis on machine topologies, drive operations, and control strategies. Then, three major research directions of the PM BL drive systems are elaborated, namely, the magnetic geared outer rotor PM BL drive system, the PM BL integrated starter generator system, and the PM BL electric variable transmission system.
author_names: Kwok Tong Chau

Ching Chuen Chan

Chunhua Liu
title: Overview of Permanent Magnet Brushless Drives for Electric and Hybrid Electric Vehicles
venue: IEEE Transactions on Industrial Electronics
year: 2008

abstract: This paper presents a technology review of voltage source converter topologies for industrial medium voltage drives. In this highly active area, different converter topologies and circuits have found their application in the market. This paper covers the high power voltage source inverter and the most used multilevel inverter topologies, including the neutral point clamped, cascaded H bridge, and flying capacitor converters. This paper presents the operating principle of each topology and a review of the most relevant modulation methods, focused mainly on those used by industry. In addition, the latest advances and future trends of the technology are discussed. It is concluded that the topology and modulation method selection are closely related to each particular application, leaving a space on the market for all the different solutions, depending on their unique features and limitations like power or voltage level, dynamic performance, reliability, costs, and other technical specifications.
author_names: Jose R Rodriguez

Steffen Bernet

Bin Wu

Jorge Pontt

Samir Kouro
title: Multilevel Voltage Source Converter Topologies for Industrial Medium Voltage Drives
venue: IEEE Transactions on Industrial Electronics
year: 2007

abstract: With the requirements for reducing emissions and improving fuel economy, automotive companies are developing electric, hybrid electric, and plug in hybrid electric vehicles. Power electronics is an enabling technology for the development of these environmentally friendlier vehicles and implementing the advanced electrical architectures to meet the demands for increased electric loads. In this paper, a brief review of the current trends and future vehicle strategies and the function of power electronic subsystems are described. The requirements of power electronic components and electric motor drives for the successful development of these vehicles are also presented.
author_names: Ali Emadi

Young-Joo Lee

Kaushik Rajashekara
title: Power Electronics and Motor Drives in Electric, Hybrid Electric, and Plug In Hybrid Electric Vehicles
venue: IEEE Transactions on Industrial Electronics
year: 2008

abstract: This paper reviews the relative merits of induction, switched reluctance, and permanent magnet (PM) brushless machines and drives for application in electric, hybrid, and fuel cell vehicles, with particular emphasis on PM brushless machines. The basic operational characteristics and design requirements, viz. a high torque/power density, high efficiency over a wide operating range, and a high maximum speed capability, as well as the latest developments, are described. Permanent magnet brushless dc and ac machines and drives are compared in terms of their constant torque and constant power capabilities, and various PM machine topologies and their performance are reviewed. Finally, methods for enhancing the PM excitation torque and reluctance torque components and, thereby, improving the torque and power capability, are described
author_names: Zi Qiang Zhu

David Howe
title: Electrical Machines and Drives for Electric, Hybrid, and Fuel Cell Vehicles
venue: Proceedings of the IEEE
year: 2007

abstract: Hybrid electric vehicle (HEV) technology provides an effective solution for achieving higher fuel economy, better performance, and lower emissions, compared with conventional vehicles. Plug in HEVs (PHEVs) are HEVs with plug in capabilities and provide a more all electric range; hence, PHEVs improve fuel economy and reduce emissions even more. PHEVs have a battery pack of high energy density and can run solely on electric power for a given range. The battery pack can be recharged by a neighborhood outlet. In this paper, a novel integrated bidirectional AC/DC charger and DC/DC converter (henceforth, the integrated converter) for PHEVs and hybrid/plug in hybrid conversions is proposed. The integrated converter is able to function as an AC/DC battery charger and to transfer electrical energy between the battery pack and the high voltage bus of the electric traction system. It is shown that the integrated converter has a reduced number of high current inductors and current transducers and has provided fault current tolerance in PHEV conversion.
author_names: Young-Joo Lee

Alireza Khaligh

Ali Emadi
title: Advanced Integrated Bidirectional AC/DC and DC/DC Converter for Plug In Hybrid Electric Vehicles
venue: IEEE Transactions on Vehicular Technology
year: 2009

abstract: This work is devoted to review and analyze the most relevant characteristics of multilevel converters, to motivate possible solutions, and to show that we are in a decisive instant in which energy companies have to bet on these converters as a good solution compared with classic two level converters. This article presents a brief overview of the actual applications of multilevel converters and provides an introduction of the modeling techniques and the most common modulation strategies. It also addresses the operational and technological issues.
author_names: Leopoldo Garcia Franquelo

J Rodriguez

Jose Ignacio Leon

Samir Kouro

Ramon C Portillo

M Angeles Martin Prats
title: The age of multilevel converters arrives
venue: IEEE Industrial Electronics Magazine
year: 2008

abstract: Multilevel converters are considered today as the state of the art power conversion systems for high power and power quality demanding applications. This paper presents a tutorial on this technology, covering the operating principle and the different power circuit topologies, modulation methods, technical issues and industry applications. Special attention is given to established technology already found in industry with more in depth and self contained information, while recent advances and state of the art contributions are addressed with useful references. This paper serves as an introduction to the subject for the not familiarized reader, as well as an update or reference for academics and practicing engineers working in the field of industrial and power electronics.
author_names: Jose R Rodriguez

Leopoldo Garcia Franquelo

Samir Kouro

Jose Ignacio Leon

Ramon C Portillo

M Angeles Martin Prats

Marcelo A Perez
title: Multilevel Converters: An Enabling Technology for High Power Applications
venue: Proceedings of the IEEE
year: 2009

abstract: Introduction. Generating Capacity Basic Probability Methods. Generating Capacity Frequency and Duration Method. Interconnected Systems. Operating Reserve. Composite Generation and Transmission Systems. Distribution Systems Basic Techniques and Radial Networks. Distribution Systems Parallel and Meshed Networks. Distribution Systems Extended Techniques. Substations and Switching Stations. Plant and Station Availability. Applications of Monte Carlo Simulation. Evaluation of Reliability Worth. Epilogue. Appendix 1: Definitions. Appendix 2: Analysis of the IEEE Reliability Test System. Appendix 3: Thirdorder Equations for Overlapping Events. Solutions to Problems. Index.
author_names: Roy Billinton

Ronald N Allan
title: Reliability evaluation of power systems
year: 1984