Optimal Design and Comparative Analysis of Multi-Phase Permanent Magnet Assisted Synchronous Reluctance Machines PDF Download
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Author: Sai Sudheer Reddy Bonthu
Publisher:
ISBN:
Category : Electric machinery, Synchronous
Languages : en
Pages : 67
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Book Description
PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. This thesis presents an optimal design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple applications and its comparison with a three-phase PMa-SynRM. The research on the five-phase PMa-SynRM has been expanded to develop a 15kW integrated starter generator (ISG). In this study, the design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple. PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. In this study, lumped parameter model (LPM) is used in the approach to initially design the five-phase PMa-SynRM. Numerical equations are integrated with the LPM to design the machine with its given range of design parameter values. Thousands of designs are generated by LPM, which are then converged to optimized model using differential evolution strategy (DES). Optimization is done with maximum efficiency and minimum torque ripple as objective. The optimized 3 kW five-phase PMa-SynRM is then analyzed by finite element method (FEM) for fine tuning. Simulation results for back electromotive force (EMF), flux linkage, developed torque, torque ripple, cogging torque, torque speed characteristics and necessary motor parameters such as d and q-axis inductances variation over respective axis currents are verified by fabricated prototype. In addition, comparison of three-phase and five-phase permanent magnet assisted synchronous reluctance motors (PMa-SynRM) in terms of their design and performance characteristics is presented. With higher fault tolerant capability, efficiency, and reliability, the five-phase PMa-SynRM can be a better substitute when compared to the three-phase PMa-SynRM in critical applications where safety is top priority. In this study, for a fair comparison, same design procedure using LPM is followed in developing the three-phase and five-phase PMa-SynRMs. Performance characteristics such as torque pulsation, back-EMF, flux linkage, etc. are intensively simulated through FEM. The optimized three-phase and five-phase PMa-SynRMs are fabricated with the same power rating (3kW) and same volume. Experimental tests are conducted on the prototypes to validate the simulation results. A 15kW five-phase PMa-SynRM integrated starter generator (ISG) has been proposed in this study. Initial model in LPM and procedure to be followed to develop the final optimized model with DES optimizer has been presented.
Author: Sai Sudheer Reddy Bonthu
Publisher:
ISBN:
Category : Electric machinery, Synchronous
Languages : en
Pages : 67
Get Book Here
Book Description
PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. This thesis presents an optimal design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple applications and its comparison with a three-phase PMa-SynRM. The research on the five-phase PMa-SynRM has been expanded to develop a 15kW integrated starter generator (ISG). In this study, the design of five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) for low torque ripple. PMa-SynRMs are similar to interior permanent magnet (IPM) motors in structure but are more economical due to reduced permanent magnets. In this study, lumped parameter model (LPM) is used in the approach to initially design the five-phase PMa-SynRM. Numerical equations are integrated with the LPM to design the machine with its given range of design parameter values. Thousands of designs are generated by LPM, which are then converged to optimized model using differential evolution strategy (DES). Optimization is done with maximum efficiency and minimum torque ripple as objective. The optimized 3 kW five-phase PMa-SynRM is then analyzed by finite element method (FEM) for fine tuning. Simulation results for back electromotive force (EMF), flux linkage, developed torque, torque ripple, cogging torque, torque speed characteristics and necessary motor parameters such as d and q-axis inductances variation over respective axis currents are verified by fabricated prototype. In addition, comparison of three-phase and five-phase permanent magnet assisted synchronous reluctance motors (PMa-SynRM) in terms of their design and performance characteristics is presented. With higher fault tolerant capability, efficiency, and reliability, the five-phase PMa-SynRM can be a better substitute when compared to the three-phase PMa-SynRM in critical applications where safety is top priority. In this study, for a fair comparison, same design procedure using LPM is followed in developing the three-phase and five-phase PMa-SynRMs. Performance characteristics such as torque pulsation, back-EMF, flux linkage, etc. are intensively simulated through FEM. The optimized three-phase and five-phase PMa-SynRMs are fabricated with the same power rating (3kW) and same volume. Experimental tests are conducted on the prototypes to validate the simulation results. A 15kW five-phase PMa-SynRM integrated starter generator (ISG) has been proposed in this study. Initial model in LPM and procedure to be followed to develop the final optimized model with DES optimizer has been presented.
Author: Gianmario Pellegrino
Publisher: Springer
ISBN: 3319322028
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
This book offers an essential compendium on the analysis and design of synchronous motors for variable-speed applications. Focusing on synchronous reluctance and ferrite permanent-magnet (PM) synchronous reluctance machines, it provides a broad perspective on three-phase machines for variable speed applications, a field currently dominated by asynchronous machines and rare-earth PM synchronous machines. It also describes synchronous reluctance machines and PM machines without rare-earth materials, comparing them to state-of-the-art solutions. The book provides readers with extensive information on and finite element models of PM synchronous machines, including all relevant equations and with an emphasis on synchronous-reluctance and PM-assisted synchronous-reluctance machines. It covers ferrite-assisted machines, modeled as a subcase of PM-assistance, fractional slot combinations solutions, and a quantitative, normalized comparison of torque capability with benchmark PM machines. The book discusses a wealth of techniques for identifying machine parameters, with an emphasis on self-commissioning algorithms, and presents methods for automated machine design and optimization, including a software tool developed for this purpose. Addressing an important gap in the field of PM-less and less-PM electrical machines, it is intended as a self-contained reference guide for both graduate students and professional machine designers, and as a useful text for university courses on automated and/or optimized design of electrical machines and drives.
Author: Nicola Bianchi
Publisher: IET
ISBN: 1839532637
Category : Science
Languages : en
Pages : 368
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Book Description
The comprehensive reference on synchronous reluctance machines, which offer high power density at low cost and support the electrification in the transport sector. This book, written by top academic and industry experts, covers all topics required to design these machines.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
Author: Georgi Yordanov Georgiev
Publisher: Springer Nature
ISBN: 3030692884
Category : Science
Languages : en
Pages : 161
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Book Description
This book uses new ideas and language for understanding how self-organization and complexity trend toward increased efficiency. Different measures for efficiency from multiple disciplines are used to probe the ones that provide the most insight. One major goal is to seek a common framework to trace the increase of efficiency as a measure of the level of organization and evolutionary stage of a complex system. The chapters come from a satellite meeting hosted at the Conference on Complex Systems, in Cancun, 2017. The contributions will be peer-reviewed and contributors from outside the conference will be invited to submit chapters to ensure full coverage of the topics. This text will appeal to students and researchers working on complex systems and efficiency.
Author: AKM Arafat
Publisher:
ISBN:
Category : Electric motors, Synchronous
Languages : en
Pages : 68
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Book Description
In this study, optimal fault tolerant control of a five-phase permanent magnet assisted synchronous reluctance motor (PMa-SynRM) has been proposed under different types of fault conditions. Consistent and safe operations of a system are major concerns for critical service applications of electrical motors particularly in the automotive and aerospace industries, and can be achieved through the use of advanced control strategies. The proposed fault tolerant control strategy is based on advanced vector control of the five-phase PMa-SynRM, which provides safe machine operation under various phase-loss fault conditions. The PMa-SynRM utilizes higher reluctance torque through large saliency ratio (ratio of d-axis and q-axis inductances) compared to a conventional permanent magnet motor. The phase currents (magnitude and phases) needed to achieve maximum torque under fault conditions have been derived. The degree of phase advance is varied based on different fault and load conditions, so as to deliver maximum output torque while reducing the phase current amplitudes to lessen saturation effect in the machine. Detailed theoretical analysis and finite element analyses (FEA) simulation have been carried out to verify the proposed method. The proposed method has also been validated through a 5 hp dynamo testing system.
Author: Gennadi Sizov
Publisher:
ISBN:
Category : Electric machinery
Languages : en
Pages :
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Book Description
In this dissertation, a model-based multi-objective optimal design of permanent magnet ac machines, supplied by sine-wave current regulated drives, is developed and implemented. The design procedure uses an efficient electromagnetic finite element-based solver to accurately model nonlinear material properties and complex geometric shapes associated with magnetic circuit design. Application of an electromagnetic finite element-based solver allows for accurate computation in intricate performance parameters and characteristics. The first contribution of this dissertation is the development of a rapid computational method that allows accurate and efficient exploration of large multi-dimensional design spaces in search of optimum design(s). The computationally efficient finite element-based approach developed in this work provides a framework of tools that allow rapid analysis of synchronous electric machines operating under steady-state conditions. In the developed modeling approach, major steady-state performance parameters such as, winding flux linkages and voltages, average, cogging and ripple torques, stator core flux densities, core losses, efficiencies and saturated machine winding inductances, are calculated with minimum computational effort. In addition, the method includes means for rapid estimation of distributed stator forces and three-dimensional effects of stator and/or rotor skew on the performance of the machine. The second contribution of this dissertation is the development of the design synthesis and optimization method based on a differential evolution algorithm. The approach relies on the developed finite element-based modeling method for electromagnetic analysis and is able to tackle large-scale multi-objective design problems using modest computational resources. Overall, computational time savings of up to two orders of magnitude are achievable, when compared to current and prevalent state-of-the-art methods. These computational savings allow one to expand the optimization problem to achieve more complex and comprehensive design objectives. The method is used in the design process of several interior permanent magnet industrial motors. The presented case studies demonstrate that the developed finite element-based approach practically eliminates the need for using less accurate analytical and lumped parameter equivalent circuit models for electric machine design optimization. The design process and experimental validation of the case-study machines are detailed in the dissertation.
Author: Ion Boldea
Publisher: CRC Press
ISBN: 0429857365
Category : Technology & Engineering
Languages : en
Pages : 416
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Book Description
Electric energy is arguably a key agent for our material prosperity. With the notable exception of photovoltaic generators, electric generators are exclusively used to produce electric energy from mechanical energy. More than 60% of all electric energy is used in electric motors for useful mechanical work in various industries. This book presents the modeling, performance, design, and control of reluctance synchronous and flux-modulation machines developed for higher efficiency and lower cost. It covers one- and three-phase reluctance synchronous motors in line-start applications and various reluctance flux-modulation motors in pulse width modulation converter-fed variable speed drives. FEATURES Presents basic and up-to-date knowledge about the topologies, modeling, performance, design, and control of reluctance synchronous machines. Includes information on recently introduced reluctance flux-modulation electric machines (switched- flux, flux-reversal, Vernier, transverse flux, claw pole, magnetic-geared dual-rotor, brushless doubly fed, etc.). Features numerous examples and case studies throughout. Provides a comprehensive overview of all reluctance electric machines.
Author: Marius Rosu
Publisher: John Wiley & Sons
ISBN: 1119103444
Category : Science
Languages : en
Pages : 312
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Book Description
Presents applied theory and advanced simulation techniques for electric machines and drives This book combines the knowledge of experts from both academia and the software industry to present theories of multiphysics simulation by design for electrical machines, power electronics, and drives. The comprehensive design approach described within supports new applications required by technologies sustaining high drive efficiency. The highlighted framework considers the electric machine at the heart of the entire electric drive. The book also emphasizes the simulation by design concept—a concept that frames the entire highlighted design methodology, which is described and illustrated by various advanced simulation technologies. Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives begins with the basics of electrical machine design and manufacturing tolerances. It also discusses fundamental aspects of the state of the art design process and includes examples from industrial practice. It explains FEM-based analysis techniques for electrical machine design—providing details on how it can be employed in ANSYS Maxwell software. In addition, the book covers advanced magnetic material modeling capabilities employed in numerical computation; thermal analysis; automated optimization for electric machines; and power electronics and drive systems. This valuable resource: Delivers the multi-physics know-how based on practical electric machine design methodologies Provides an extensive overview of electric machine design optimization and its integration with power electronics and drives Incorporates case studies from industrial practice and research and development projects Multiphysics Simulation by Design for Electrical Machines, Power Electronics and Drives is an incredibly helpful book for design engineers, application and system engineers, and technical professionals. It will also benefit graduate engineering students with a strong interest in electric machines and drives.
Author: Rui Araújo
Publisher: BoD – Books on Demand
ISBN: 1789844541
Category : Science
Languages : en
Pages : 373
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Book Description
Today, switched reluctance machines (SRMs) play an increasingly important role in various sectors due to advantages such as robustness, simplicity of construction, low cost, insensitivity to high temperatures, and high fault tolerance. They are frequently used in fields such as aeronautics, electric and hybrid vehicles, and wind power generation. This book is a comprehensive resource on the design, modeling, and control of SRMs with methods that demonstrate their good performance as motors and generators.
