scholarly journals Optimization of Three-Phase Hybrid Stepper Motors for Noise Reduction

Sensors ◽  
2022 ◽  
Vol 22 (1) ◽  
pp. 356
Author(s):  
Zhen Peng ◽  
Chao Bi ◽  
Lingli Fang ◽  
Longfei Xiao
Keyword(s):  
Finite Element ◽  
Noise Analysis ◽  
Computation Time ◽  
Optimization Method ◽  
Torque Ripple ◽  
Taguchi Optimization ◽  
Three Phase ◽  
Optimization Calculation ◽  
Finite Element Calculations ◽  
Stepper Motors

For the optimization of three-phase hybrid stepper motors with complex electromagnetic structures, an optimization method is presented in this paper. The method is a combination of 3D-FEM and the Taguchi optimization method intended to reduce the dependence on FEM results during the optimization calculation. In this paper, the optimization method is used in the optimization of the tooth shape of the three-phase hybrid stepper motor, and the objective is to reduce the noise caused by harmonics in the “torque-angle characteristic” of the motor. It is clear that traditional optimization methods make it very difficult to carry out such an optimization calculation as a large number of finite element calculations have to be used in the optimization process, and the required computation time is extremely long. Using the optimization method presented in the paper, the optimization becomes feasible because the number of finite element calculations is greatly reduced and the computation time is thus greatly reduced. In order to check the effectiveness of the optimization, the waterfall diagram for noise analysis and its application to check torque ripple are also presented in the paper. Both simulation and test results show that the optimized structure can significantly reduce the motor noise caused by torque ripple. Therefore, the optimization method proposed in this paper can be an effective tool for the optimal design of high-performance motors, including stepper motors.

Torque Optimization of Double-Stator Switched Reluctance Machine

2013 ◽  
Vol 313-314 ◽  
pp. 45-50 ◽  
Author(s):  
Mohammadali Abbasian ◽  
Vahid Hanaeinejad
Keyword(s):  
Finite Element ◽  
Acoustic Noise ◽  
Optimization Method ◽  
Torque Ripple ◽  
Radial Force ◽  
Switched Reluctance Machine ◽  
Switched Reluctance ◽  
Torque Density ◽  
Reluctance Machine ◽  
Switched Reluctance Machines

Double-stator switched reluctance machines benefit from a high torque density and a low radial force level in comparison with conventional switched reluctance machines resulting in a lower vibration and acoustic noise. Therefore, they are suitable candidate for automotive applications. However, torque pulsation which is also a source for vibration is still remained and should be alleviate by dimension optimization of the machine. This paper presents a design optimization of a double-stator switched reluctance machine for improving the magnetic torque quality of the machine. For this purpose finite element method along with response surface methodology is used to optimize three parameters of the machine to maximize torque quality factor i.e. the average torque to torque ripple ratio in the machine. Genetic algorithm method is also employed as an optimization tool. The aim of optimization is to maximize the ratio of average torque to torque ripple. Finite element results are presented to verify the optimization method.

Finite Element Analysis and Deformation Homogeneity Optimization of Constrained Groove Pressing

2013 ◽  
Vol 278-280 ◽  
pp. 505-513
Author(s):  
Zong Shen Wang ◽  
Yan Jin Guan ◽  
Li Bin Song ◽  
Ping Liang
Keyword(s):  
Finite Element ◽  
Signal To Noise Ratio ◽  
Element Model ◽  
Optimization Method ◽  
Processing Parameters ◽  
Equivalent Strain ◽  
Groove Width ◽  
Taguchi Optimization ◽  
Element Analysis ◽  
Deformation Homogeneity

Improvement of materials properties induced by constrained groove pressing (CGP) depends largely on deformation homogeneity. Utilizing commercial software DEFORM-3D, a finite element model of multi-pass CGP was established. The distribution and homogeneity evolution of equivalent strain ware analyzed in detail. Based on Taguchi optimization method, the influence of processing parameters (such as groove width, groove angle, friction coefficient and deformation rate) on strain homogeneity was studied numerically and systematically. Within a certain range, the optimum parameter combination is obtained by means of signal to noise ratio analysis. The inhomogeneity factor of the optimum model decreases by about 50 %. The average accumulative equivalent strain is almost twice that of the initial model. Analysis of variance shows that groove angle and groove width are the two most important parameters and effect of friction between dies and sample should not be neglected.

Influence of inter-turn short circuit on the performance of 10 kV, 1000 kW induction motor

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ran Yi ◽  
Yanan Xu ◽  
Hongbo Qiu ◽  
Cunxiang Yang ◽  
Xifang Zhao
Keyword(s):  
Finite Element ◽  
Induction Motor ◽  
Short Circuit ◽  
Torque Ripple ◽  
Finite Element Calculation ◽  
Loop Current ◽  
Element Calculation ◽  
Phase Current ◽  
Three Phase ◽  
Current Unbalance

AbstractAs the main power source of the industrial production and mining industry, the health of high-voltage induction motor (HVIM) has attracted extensive attention. The loop current (LC) of the inter-turn short-circuit (ITSC) fault seriously endangers the stability of HVIM. A comparative analysis is made of HVIM in this paper when the motor works under fault conditions. The purpose of this study is to analyze the influence of ITSC fault on motor performance when the LC is considered and the LC is not considered. In this paper, a 10 kV, 1000 kW HVIM is taken as an example to establish finite element calculation model. By comparing finite element calculation data and test data, the model correctness is verified. Based on the correctness model, the fault models are established. The three-phase current unbalances, torque ripple and losses are studied when the motor works under the different fault conditions. By comparing the three-phase current unbalance, torque ripple and loss of the motor when the LC is considered and the LC is not considered. The influence mechanism of the ITSC fault on three-phase current unbalance, torque ripple and losses are revealed. Based on the above analysis, some references are given for ITSC fault diagnosis and fault degree identification.

Design and Finite Element Analysis of a Novel Permanent Magnet Assisted Reluctance Synchronous Motor

2020 ◽  
Vol 35 (9) ◽  
pp. 1012-1021
Author(s):  
Xianming Deng ◽  
Ran Li ◽  
Lei Hao ◽  
Ankang Zhang ◽  
Junhong Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Harmonic Component ◽  
Optimization Method ◽  
Torque Ripple ◽  
Element Analysis ◽  
Reluctance Machine ◽  
Steady State Operation ◽  
Asymmetric Rotor

In this paper, a permanent magnet assisted synchronous reluctance machine (PMASRM) with optimized permanent magnet width and asymmetric rotor structure is proposed. A typical PMASRM is selected as the reference motor (Pre-optimized PMASRM). In order to reduce the large torque ripple of conventional PMASRM, an optimization method to design the permanent magnet width is investigated and the Optimized Magnet-width PMASRM is proposed. On this basis, an asymmetric flux barriers structure is proposed to further reduce the torque ripple. Some electromagnetic characteristics including air-gap flux density, no-load back EMF and motor efficiency are examined by Finite Element Analysis (FEA). The simulation results show that the proposed PMASRM can not only decrease the harmonic component of no-load back EMF obviously, but also reduce the torque ripple in steady-state operation, which proves the rationality of the motor structure.

scholarly journals Numerical Investigation of Springback in Mechanical Clinching Process

2017 ◽  
Vol 2 (4) ◽  
pp. 86-93
Author(s):  
Mohanna Eshtayeh ◽  
Meftah Hrairi ◽  
M.S.I Shaik Dawood
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Numerical Investigation ◽  
Optimization Method ◽  
Stress Recovery ◽  
Optimal Parameters ◽  
Taguchi Optimization ◽  
Taguchi Optimization Method ◽  
Mechanical Clinching ◽  
Implicit And Explicit

In this work, a numerical investigation was conducted to study the springback phenomena in the mechanical clinching process. The springback values were calculated using finite element simulations and it was found that these values depend strongly on the strength of the materials. A Taguchi optimization method was used to determine the optimal parameters affecting springback. However, in the case of materials with low tensile strength, determining parameters affecting springback becomes difficult. Implicit and explicit simulations of clinching joints using the springback analysis show that the distance between the joint sheets becomes almost zero after stress recovery.

Finite Element Method to Study Elasto-Thermodiffusive Response inside a Hollow Cylinder with Three-Phase-Lag Effect

2019 ◽  
Vol 7 (1) ◽  
pp. 148-156
Author(s):  
Debarghya Bhattacharya ◽  
Prashanta Pal ◽  
Mridula Kanoria
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Hollow Cylinder ◽  
Phase Lag ◽  
Three Phase ◽  
Lag Effect ◽  
Element Method

scholarly journals Optimization of a 3D-Printed Permanent Magnet Coupling Using Genetic Algorithm and Taguchi Method

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 494
Author(s):  
Ekaterina Andriushchenko ◽  
Ants Kallaste ◽  
Anouar Belahcen ◽  
Toomas Vaimann ◽  
Anton Rassõlkin ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Taguchi Method ◽  
Permanent Magnet ◽  
Optimization Problems ◽  
Optimization Method ◽  
Taguchi Optimization ◽  
Torque Density ◽  
Electromagnetic Devices ◽  
3D Printed ◽  
Manufacturing Techniques

In recent decades, the genetic algorithm (GA) has been extensively used in the design optimization of electromagnetic devices. Despite the great merits possessed by the GA, its processing procedure is highly time-consuming. On the contrary, the widely applied Taguchi optimization method is faster with comparable effectiveness in certain optimization problems. This study explores the abilities of both methods within the optimization of a permanent magnet coupling, where the optimization objectives are the minimization of coupling volume and maximization of transmitted torque. The optimal geometry of the coupling and the obtained characteristics achieved by both methods are nearly identical. The magnetic torque density is enhanced by more than 20%, while the volume is reduced by 17%. Yet, the Taguchi method is found to be more time-efficient and effective within the considered optimization problem. Thanks to the additive manufacturing techniques, the initial design and the sophisticated geometry of the Taguchi optimal designs are precisely fabricated. The performances of the coupling designs are validated using an experimental setup.

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