Optimal design of synchronous reluctance machines

2017-12-15
Kiani, Morgan
Bostancı, Emine
Fahimi, Babak
Electric machines are optimized to the extent of their magnetic configuration and manufacturability. Thanks to recent advances in development of composite material (SMC), 3-D printing, and programmable magnets, manufacturing capabilities have changed dramatically. Introducing of cloud computing and impressive computational resources has opened new opportunities in virtual prototyping in a multi-physics environment. These enabling technologies present a potential for a transformative approach in optimal design, evaluation, and manufacturing of the next generation of electric machines and adjustable speed drives. This paper proposes a new design approach applied to optimal design of synchronous reluctance machines. The proposed technique removes all the conventional constraints posed by traditional designs of classic magnetic configurations and only keeps a minimum airgap length and shaft diameter as the boundary conditions. The fabric of the rotor is based on a mesh whose elements can be air or SMC. A genetic algorithm is used for optimal placement of rotor configuration.

Suggestions

Modelling and Precalculation of Additional Losses of Inverter Fed Asynchronous Induction Machines for Traction Applications
Muellner, F.; Neudorfer, H.; Schmidt, E. (2011-09-10)
The inverter supply of asynchronous induction machines for traction applications has a major influence on both electromagnetic and thermal performance. In addition asynchronous induction machines used with traction drives of rail transportation vehicles have different design strategies compared against commonly used standard machines. Generally, the design of these machines requires high electromagnetic and thermal stress. Thus, the additional losses caused by the inverter have to be considered with the ini...
Design of synchronous reluctance machines with a wide speed range
Yılmaz, Yusuf Basri; Bostancı, Emine; Department of Electrical and Electronics Engineering (2021-9-10)
Synchronous reluctance machines (SynRMs) are a good alternative for traction and industrial applications due to their good power density, low cost and high efficiency. However, they suffer from high torque ripple, low power factor and poor high speed performance due to their singly excited nature. To overcome these challenges, rotor geometries are optimized to get a low torque ripple and ferrite magnets are inserted in the flux barriers to get a higher power factor and a better high speed performance. Thi...
Dynamic analysis, design and practical applications of an overconstrained mechanical force generator
Erdinç, Umur; Soylu, Reşit; Department of Mechanical Engineering (2017)
In this thesis, dynamical characteristics of existing machines are improved by coupling mechanical force generators to the machine. In short, mechanical force generators (MFG) are energy efficient, overconstrained, shaking force and shaking moment free planar mechanisms which can be used to generate a desired periodic force profile; store excess energy and release it when needed. They can reduce the energy consumption of an existing machine, or optimize other dynamical characteristics of a machine. In chapt...
Beam modulation in double gap virtual cathode oscillator
Küçük, İbrahim Semih; Demir, Şimşek; Department of Electrical and Electronics Engineering (2018)
Vircator is a promising high power microwave device when its simplicity, frequency tunability, lack of external magnetic field source are considered. Vircator gains importance especially susceptibility testing to electromagnetic pulses of electronic equipments with its tunability. Apart from advantages, main bottleneck of the vircator is its low efficiency. Tunability and efficiency enhancement studies are still continued in literature. Double gap vircator draws attention due to its tunability, generation f...
Analysis and Fault Tolerant Control of a Five-Phase Axial Flux Permanent Magnet Synchronous Machine
Bayazıt, Göksenin Hande; Keysan, Ozan; Department of Electrical and Electronics Engineering (2021-9-06)
This study investigates the fault-tolerance capability of an air-cored, axial flux, five-phase permanent magnet synchronous machine. The air-cored stator is designed by adopting a novel winding topology that is called flat winding. The coils of flat winding are made by bending and grouping one within another of the flat wires made of a laser-cut thin aluminum sheet. This topology provides superior current ratings, better cooling performance, and a robust structure for the stator. As the coils are covered w...
Citation Formats
M. Kiani, E. Bostancı, and B. Fahimi, “Optimal design of synchronous reluctance machines,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35132.