CiNii 図書 - Advancements in electric machines

Traditionally, electrical machines are classi?ed into d. c. commutator (brushed) machines, induction (asynchronous) machines and synchronous machines. These three types of electrical machines are still regarded in many academic curricula as fundamental types, despite that d. c. brushed machines (except small machines) have been gradually abandoned and PM brushless machines (PMBM) and switched reluctance machines (SRM) have been in mass p- duction and use for at least two decades. Recently, new topologies of high torque density motors, high speed motors, integrated motor drives and special motors have been developed. Progress in electric machines technology is stimulated by new materials, new areas of applications, impact of power electronics, need for energy saving and new technological challenges. The development of electric machines in the next few years will mostly be stimulated by computer hardware, residential and public applications and transportation systems (land, sea and air). At many Universities teaching and research strategy oriented towards el- trical machinery is not up to date and has not been changed in some co- tries almost since the end of the WWII. In spite of many excellent academic research achievements, the academia-industry collaboration and technology transfer are underestimated or, quite often, neglected. Underestimation of the role of industry, unfamiliarity with new trends and restraint from technology transfer results, with time, in lack of external ?nancial support and drastic - cline in the number of students interested in Power Electrical Engineering.

Introduction
1.1 Why electric machines continue to naturally grow
1.2 Status of electric motors
1.2.1 A.C. motors
1.2.2 Brushless PM motors
1.2.3 Stepping motors
1.2.4 Switched reluctance motors
1.2.5 Servo motors
1.3 Progress in electric machines technology
1.4 Mechatronics
1.5 Microelectromechanical systems
1.6 Superconductivity
1.7 Solid state converters
1.8 Energy conservation
1.9 Power quality
1.10 Recyclable electric machines
2 Material engineering
2.1 Laminated silicon steels
2.2 High saturation ferromagnetic alloys
2.3 Amorphous ferromagnetic materials
2.4 Soft magnetic powder composites
2.5 Permanent magnets
2.5.1 Characteristics of PM materials
2.5.2 Rare-earth permanent magnets
2.5.3 Halbach array
2.6 Wire insulation with heat activated adhesives
2.7 High temperature materials
2.7.1 High temperature ferromagnetic materials
2.7.2 High temperature insulating materials and conductors
2.8 Superconductors
2.8.1 Classification of HTS wires
2.8.2 HTS wires manufactured by American Superconductors
2.8.3 HTS wires manufactured by SuperPower
2.8.4 Bulk superconductors
2.9 Nanostructured materials
2.9.1 Carbon nanotubes
2.9.2 Soft magnetic nanocrystalline composites
2.10 Magnetic shape memory materials
3 High power density machines
3.1 Permanent magnet transverse flux motors
3.2 Permanent magnet disc type motors
3.3 Permanent magnet motors with concentrated non-overlapping coils
3.4 Motors for refrigeration compressors in LNG plants
3.5 Induction motors with cryogenic cooling system
4 High speed machines
4.1 Requirements
4.2 Microturbines
4.3 Compressors
4.4 aircraft generators
4.5 High speed multimegawatt generators
4.5.1 Directed energy weapons
4.5.2 Airborne radar
4.5.3 Megawatt airborne generator cooling system
4.6 Comparison of cooling techniques for high speed electric machines
4.7 Induction machines with cage rotors
4.8 Induction machines with solid rotors
5 Other type of novel motors
5.1 Written pole motor
5.2 Piezoelectric motors
5.3 Bearingless motors
5.4 Slotless motors
5.5 Coreless stator permanent magnet brushless motors
5.5.1 Disc type coreless motors
5.5.2 Cylindrical type motors with coreless stator winding
5.6 Integrated starter generator
5.7 Integrated electromechanical drives
5.8 Induction motors with copper cage rotor
6 Electric motors for medical and clinical applications
6.1 Electric motors and actuators
6.2 Material requirements
6.3 Control
6.4 Implanted blood pumps
6.5 Mothorized catheters
6.6 Plaqueexcision
6.7 Capsule endoscopy
6.8 Minimally invasive surgery
6.9 Challenges
7 Generators for portable power applications
7.1 Miniature rotary generators
7.1.1 Mini generators for soldiers at battlefields and unmanned vehicles
7.1.2 Coreless stator disc type microgenerators
7.2 Energy harvesting devices
8 Superconducting electric machines
8.1 Low speed HTS machines
8.1.1 Applications
8.1.2 Requirements
8.1.3 HTS synchronous motor for ship propulsion rated at 5 MW
8.1.4 Test facility for 5 MW motors
8.1.5 HTS motor for ship propulsion rated 36.5 MW
8.1.6 Superconducting synchronous generators
8.1.7 Dynamic synchronous condenser
8.1.8 HTS synchronous generators developed by Siemens
8.1.9 Japanese HTS machines
8.1.10 Bulk HTS machines
8.1.11 HTS synchronous generator built in Russia
8.1.12 HTS d.c. homopolar generator
8.2 High speed HTS generators
8.2.1 First prototype of high speed superconducting generators
8.2.2 Homopolar generators with stationary superconducting winding
8.2.3 Design of HTS rotors for synchronous generators
8.3 Market readiness
9 Naval electric machines
9.1 Background
9.2 Power train of electric ships
9.3 Propulsion units
9.3.1 Shaft propulsion
9.3.2 Azimuth thrusters
9.3.3 Pod propulsors
9.3.4 Integrated motor-propeller
9.4 Generators for naval applicati

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Advancements in electric machines

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