Performance Analysis of Brushless DC Machines with Axially Displaceable Rotor PDF Download
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Author: Emine Bostanci
Publisher:
ISBN: 9783832537432
Category :
Languages : en
Pages : 0
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Book Description
In this study, a mechanical field weakening method that is applied to enhance the high-speed performance of a PM brushless machine by reducing the active axial machine length is analyzed in terms of its operational characteristics and efficiency. For this purpose, an existing multi-phase brushless DC (BLDC) machine with an axially displaceable rotor is used. First, the parameters of this machine, such as back EMF, torque constant and phase inductances are determined for various axial rotor positions by using 2-D and 3-D FEM analyses. Then, the determined machine parameters are used to build a dynamic simulation model of the drive system. By using this developed system model, the operational characteristics including the limits of the mechanical field weakening method are analyzed. In the second place, the efficiency of the BLDC machine is investigated, laying the main focus of attention on the additional losses in the field weakening range. In order to determine these losses, new numerical and measurement methods are developed. Furthermore, the measurement results are used to validate the numerical results. Finally, recommendations for PM brushless machines with an axially displaceable stator/rotor including possible design measures to reduce the additional losses and the application of mechanical field weakening are presented.
Author: Emine Bostanci
Publisher:
ISBN: 9783832537432
Category :
Languages : en
Pages : 0
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Book Description
In this study, a mechanical field weakening method that is applied to enhance the high-speed performance of a PM brushless machine by reducing the active axial machine length is analyzed in terms of its operational characteristics and efficiency. For this purpose, an existing multi-phase brushless DC (BLDC) machine with an axially displaceable rotor is used. First, the parameters of this machine, such as back EMF, torque constant and phase inductances are determined for various axial rotor positions by using 2-D and 3-D FEM analyses. Then, the determined machine parameters are used to build a dynamic simulation model of the drive system. By using this developed system model, the operational characteristics including the limits of the mechanical field weakening method are analyzed. In the second place, the efficiency of the BLDC machine is investigated, laying the main focus of attention on the additional losses in the field weakening range. In order to determine these losses, new numerical and measurement methods are developed. Furthermore, the measurement results are used to validate the numerical results. Finally, recommendations for PM brushless machines with an axially displaceable stator/rotor including possible design measures to reduce the additional losses and the application of mechanical field weakening are presented.
Author: Amin, Muhammad
Publisher: IGI Global
ISBN: 1466684429
Category : Technology & Engineering
Languages : en
Pages : 419
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Book Description
Direct current machines are a quickly evolving domain whose applications affect many aspects of modern life from computers and printers to toys, electric vehicles, and traction applications. As their many uses continue to grow, it has become apparent that understanding these machines is the key to understanding our future. Operation, Construction, and Functionality of Direct Current Machines brings together many concepts, from the most basic working principles and construction of DC machines to more advanced topics such as electro-magnetism, armature reaction, parallel operations, and many more. Highlighting theoretical concepts and numerical problems, this book is an essential reference source for students, educators, and anyone interested in the field of electric machines.
Author: Konrad Reif
Publisher: Springer
ISBN: 3658039752
Category : Technology & Engineering
Languages : en
Pages : 549
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Book Description
As the complexity of automotive vehicles increases this book presents operational and practical issues of automotive mechatronics. It is a comprehensive introduction to controlled automotive systems and provides detailed information of sensors for travel, angle, engine speed, vehicle speed, acceleration, pressure, temperature, flow, gas concentration etc. The measurement principles of the different sensor groups are explained and examples to show the measurement principles applied in different types.
Author: A. Haddad
Publisher: IET
ISBN: 0852961588
Category : Technology & Engineering
Languages : en
Pages : 669
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Book Description
This book addresses the very latest research and development issues in high voltage technology, specifically covering developments throughout the past decade. It is intended as a reference source for researchers and students in the field, but the unique blend of expert authors and comprehensive subject coverage means that this book is also ideally suited as a reference source for engineers and academics in the field for years to come.
Author: Adel Merabet
Publisher: MDPI
ISBN: 3039436996
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
This book provides extensive information about advanced control techniques in electric drives. Multiple control and estimation methods are studied for position and speed tracking in different drives. Artificial intelligence tools, such as fuzzy logic and neural networks, are used for specific applications using electric drives.
Author: N. K. Mehta
Publisher: Tata McGraw-Hill Education
ISBN: 9781259004575
Category : Machine-tools
Languages : en
Pages : 0
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Book Description
Author: P. C. Sen
Publisher: New York ; Toronto : J. Wiley
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 648
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Book Description
This new edition combines the traditional areas of electric machinery with the latest in modern control and power electronics. It includes coverage of multi-machine systems, brushless motors and switched reluctance motors, as well as constant flux and constant current operation of induction motors. It also features additional material on new solid state devices such as Insulated Gate Bipolar Transistors and MOS-Controlled Thrysistors.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Author: S Tumanski
Publisher: CRC Press
ISBN: 1420033247
Category : Science
Languages : en
Pages : 446
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Book Description
Thin Film Magnetoresistive Sensors presents a comprehensive review of thin film magnetoresistive (MR) sensors, including the theory of MR effects as well as the design, fabrication, properties, and applications of MR sensors. With over 1,000 references, the book fully reviews the theory, development, and use of these sensors. It provides essential information about the performance of various kinds of sensors, including permalloy magnetoresistors, spin valve sensors, multilayer sensors, colossal effect sensors, spin dependent tunneling sensors, and magnetoimpedance sensors.
Author: Siegfried Fred Singer
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 284
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Book Description
