A Study on the Novel Coefficient Modeling for a Skewed Permanent Magnet and Overhang Structure for Optimal Design of Brushless DC Motor

Hwang, Kyu-Yun; Lin, Hai; Rhyu, Se-Hyun; Kwon, Byung-il

doi:10.1109/tmag.2011.2176135

Cited by 25 publications

(15 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The abovementioned methods are suitable for the tolerance design of electronic system, since it is easy to estimate the cost of each component. And (2) methods based on indirect optimization of approximation models by using different kinds of optimization algorithms, including intelligent algorithms [26][27][28][29][30][31]. Although these methods may theoretically improve the robustness of the EMDs, they fail to effectively consider the impact of permanent magnet working point migration, such that the batch production consistency has not been greatly improved.…”

Section: Introductionmentioning

confidence: 99%

Quality and robustness optimization design method for electromagnetic devices consider manufacturing uncertainties and working point migration of permanent magnets

Chen

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

Electromagnetic devices (EMDs) containing permanent magnets are common devices showing low power consumption , small size, and high sensitivity. In batch production of EMDs there is a robustness problem linked to the migration of the working point of permanent magnets and to their manufacturing uncertainties. In turn, the design optimization for EMDs has attracted large attention. Robust design optimization (RDO) is one of the most effective methods to boost quality and robustness of EMDs. However, state-of-art RDO methods ignore the various uncertainties from manufacture processing, production environment, and working point migration of permanent magnets. To address those problems, this study presents an efficient and universal method based on the working point migration and various uncertainties of output characteristics for electromagnetic devices. At first, we introduce a two-dimensional factor design scheme considering the working point migration and manufacturing conditions. Then, a robustness assessment measure suitable for different optimization types is proposed. On these bases, the optimization model is established, considering the permanent working point migration for magnets, manufacturing tolerances and robustness constraints, and a particle swarm algorithm is used to obtain the solution. Finally, the effectiveness of the method is verified by a case study involving a specific type of electromagnetic device with permanent magnets.

show abstract

Section: Introductionmentioning

confidence: 99%

Quality and robustness optimization design method for electromagnetic devices consider manufacturing uncertainties and working point migration of permanent magnets

Chen

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…Rotor overhang is another design aspect, which serves to increase the torque performances of a SPM motor by utilising the free space resulting from the end winding of the stator. By designing the rotor axis length to be longer than the stator axis length, the performance of the SPM motor can be enhanced without an expansion of the motor space [23][24][25][26][27][28][29][30]. Distributedwinding motors are advantageous because they have higher endwindings and thus more free space than concentrated-winding motors [24].…”

Section: Introductionmentioning

confidence: 99%

Influence of a novel flux‐absorbing structure on the performance of a surface‐mounted permanent‐magnet motor with overhang

Kwon

Yeo

Jung

2019

IET Electric Power Applications

View full text Add to dashboard Cite

The demand for surface-mounted permanent-magnet (SPM) motors with high torque and power densities has increased as these motors are becoming more widely used in applications requiring high performance in limited spaces, such as electric vehicles and robot arms. Some studies have increased the torque and power densities, such as hybrid flux permanentmagnet motors utilising radial and axial magnetic fluxes, dual-rotor and dual-stator permanent-magnet motors. Although these motors offer high performance, there are some problems such as low productivity and poor applicability to small motors have arisen due to their complicated structures. An overhang structure can be a simple and effective means of solving the aforementioned problems. However, the overhang effects do not increase linearly but tend to converge as the length of the overhang increases. Therefore, a novel flux-absorbing structure (FAS) that effectively enhances the overhang effects of SPM motors even in cases with considerable overhang was proposed. The magnetic flux path from the overhang to the stator can be efficiently improved via the proposed FAS. Thereby, the performances of a SPM motor can be effectively enhanced when the FAS is adopted. The effectiveness of the proposed FAS was verified via a 3D finite-element analysis and in experiments.

show abstract

“…Although the non-probability model improves the optimization effect, it neglects correlations of uncertainties. In order to further improve the optimization effect, scholars have proposed an improved uncertainty quantitative method [18][19][20][21][22], which solves correlations of uncertainties to some extent, but these methods are only effective in a certain distribution and for linear design parameters. In addition, it should be pointed out that these methods only consider uncertainties from the manufacturing process and operational environment, optimize the initial quality, and ignore the degradation progress.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Comprehensive Quality and Reliability Optimization of High-Power DC Actuators for Renewable Energy Systems

Deng

Chen

et al. 2019

Energies

View full text Add to dashboard Cite

To better qualify various uncertainties in design and manufacturing, as well as to understand the time-varying degradation process, a novel method of quality and reliable design and optimization for high-power DC actuators was developed in this study that considered relevant uncertainties in design, manufacturing parameters, and the degradation process. Orthogonal transformation was used to normalize heterogeneous uncertainties and the results were quantitatively described by the hyperellipsoid set model. On the basis of the uncertainty quantitative relationship, a fast substitution model was developed for high-power DC actuators with permanent magnet output characteristics of strong non-linearity and insufficient accuracy. The response surface method was used to derive the basis function, and the error between the practical measured values and the calculation values was modified by the radial basis function model. Afterwards, a life cycle global sensitivity analysis method was put forward to determine the design parameters when parameter degradation existed during the life cycle of high-power DC actuators. Then, an optimization model was established considering parameter uncertainties and reliability constraints, and the particle swarm algorithm was used to obtain the solution. Finally, the effectiveness of the proposed method was verified by a case study of high-power DC actuators in electric vehicles.

show abstract

A Study on the Novel Coefficient Modeling for a Skewed Permanent Magnet and Overhang Structure for Optimal Design of Brushless DC Motor

Cited by 25 publications

References 17 publications

Quality and robustness optimization design method for electromagnetic devices consider manufacturing uncertainties and working point migration of permanent magnets

Quality and robustness optimization design method for electromagnetic devices consider manufacturing uncertainties and working point migration of permanent magnets

Influence of a novel flux‐absorbing structure on the performance of a surface‐mounted permanent‐magnet motor with overhang

A Novel Method for Comprehensive Quality and Reliability Optimization of High-Power DC Actuators for Renewable Energy Systems

Contact Info

Product

Resources

About