Investigation of enhancing efficiency and acceleration in a flat shape axial gap motor having high torque characteristic

2017 ◽  
Author(s):  
Ren Tsunata ◽  
Masatsugu Takemoto ◽  
Satoshi Ogasawara ◽  
Asako Watanabe ◽  
Tomoyuki Ueno ◽  
...  
Keyword(s):  
Flat Shape ◽  
High Torque

Study and design of dual stator permanent magnet machine with spoke-type configurations using phase-group concentrated-coil windings

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1381-1389
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Low Cost ◽  
Dynamic Performance ◽  
Torque Ripple ◽  
Permanent Magnet Machine ◽  
Torque Density ◽  
Phase Group ◽  
High Torque ◽  
Simulation Results

In this paper, a novel dual-stator permanent magnet machine (DsPmSynM) with low cost and high torque density is designed. The winding part of the DsPmSynM adopts phase-group concentrated-coil windings, and the permanent magnets are arranged by spoke-type. Firstly, the winding structure reduces the amount of copper at the end of the winding. Secondly, the electromagnetic torque ripple of DsPmSynM is suppressed by reducing the cogging torque. Furthermore, the dynamic performance of DsPmSynM is studied. Finally, the experimental results are compared with the simulation results.

BELMALLOY

Alloy Digest ◽  
1954 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Grade ◽  
Malleable Iron ◽  
Shock Resistance ◽  
High Torque

Abstract BELMALLOY is a high grade pearlitic malleable iron providing rigidity and shock resistance to high torque loads. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: CI-6. Producer or source: Belle City Malleable Iron Company.

Use of Small-Pin Distraction and Low-Speed, High-Torque Burring for Talar Osteochondral Allografts: Technique Tip

2021 ◽  
pp. 107110072110031
Author(s):  
Ryan O’Leary ◽  
Ian M. Foran ◽  
David J. Dalstrom
Keyword(s):  
Expert Opinion ◽  
Level Of Evidence ◽  
Low Speed ◽  
Evidence Level ◽  
High Torque ◽  
Osteochondral Allografts

Level of Evidence: Level V, expert opinion.

A High Torque Density Claw Pole Permanent-Magnets Vernier Machine

2021 ◽  
pp. 1-1
Author(s):  
Yuanzhi Zhang ◽  
Dawei Li ◽  
Peng Yan ◽  
Xiang Ren ◽  
Ronghai Qu ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
Torque Density ◽  
High Torque

scholarly journals Optimization of Air Gap Length and Capacitive Auxiliary Winding in Three-Phase Induction Motors Based on a Genetic Algorithm

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4407
Author(s):  
Mbika Muteba
Keyword(s):  
Genetic Algorithm ◽  
Design Process ◽  
Power Factor ◽  
High Speed ◽  
High Efficiency ◽  
Air Gap ◽  
Element Analysis ◽  
Three Phase ◽  
High Torque ◽  
Cage Induction Motor

There is a necessity to design a three-phase squirrel cage induction motor (SCIM) for high-speed applications with a larger air gap length in order to limit the distortion of air gap flux density, the thermal expansion of stator and rotor teeth, centrifugal forces, and the magnetic pull. To that effect, a larger air gap length lowers the power factor, efficiency, and torque density of a three-phase SCIM. This should inform motor design engineers to take special care during the design process of a three-phase SCIM by selecting an air gap length that will provide optimal performance. This paper presents an approach that would assist with the selection of an optimal air gap length (OAL) and optimal capacitive auxiliary stator winding (OCASW) configuration for a high torque per ampere (TPA) three-phase SCIM. A genetic algorithm (GA) assisted by finite element analysis (FEA) is used in the design process to determine the OAL and OCASW required to obtain a high torque per ampere without compromising the merit of achieving an excellent power factor and high efficiency for a three-phase SCIM. The performance of the optimized three-phase SCIM is compared to unoptimized machines. The results obtained from FEA are validated through experimental measurements. Owing to the penalty functions related to the value of objective and constraint functions introduced in the genetic algorithm model, both the FEA and experimental results provide evidence that an enhanced torque per ampere three-phase SCIM can be realized for a large OAL and OCASW with high efficiency and an excellent power factor in different working conditions.

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