• Title/Summary/Keyword: Response Surface Methodology (RSM)

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Optimum Design For Premium Efficiency of 250kW Traction Induction Motor Using Response Surface Methodology & FEM (반응표면법과 유한요소법을 이용한 250kW급 견인 유도전동기의 고효율을 위한 최적 설계)

  • Cho, Yong-Hyun;Lim, Hwang-Bin;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.782-783
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    • 2008
  • This paper deals with optimum design criteria for premium efficiency of 250kW traction induction motor using response surface methodology (RSM) & finite element method (FEM). The RSM has been achieved to use the experimental design method in combination with Finite Element Method and well adapted to make analytical model for a complex problem considering a lot of interaction of design variables. The proposed procedure allows to define the rotor copper bar shape, stator slot and stator, rotor dimensions starting from an existing motor or a preliminary design.

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Rotor Design on Torque Ripple Reduction for a Synchronous Reluctance Motor with Concentrated Winding using Response Surface Methodology (반응표면법을 이용한 집중권선 동기 릴럭턴스 전동기의 토크 리플 저감에 관한 회전자 설계)

  • Park, Jung-Min;Kim, Sung-Il;Hong, Jung-Pyo;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.669-670
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    • 2006
  • This paper deals with the optimum rotor design solution on torque ripple reduction for a SynRM with concentrated winding using response surface methodology (RSM). The RSM has been achieved to use the experimental design method in combination with finite element method (FEM)and well adapted to make analytical model for a complex problem considering a lot of interaction of design variables. Comparisons are given with characteristics of a SynRM according to flux barrier number, flux barrier width variation, respectively.

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Improvement of efficiency in Multi-layer IPMSM using Response Surface Methodology (반응 표면법을 이용한 Multi-layer 매입형 영구자석 동기정동기의 효율 향상)

  • Fang, Liang;Kwon, Soon-O;Lee, Sang-Ho;Zhang, Peng;Hong, Jung-Pyo
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.777-778
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    • 2006
  • This paper deals with the optimum rotor design approach about the multi-layer design of the buried magnets in an Interior Permanent Magnet Synchronous Motor (IPMSM), on the efficiency improvement by using Response Surface Methodology (RSM). In the multi-layer design of the prototype 15kw IPMSM, the constant amount of buried PM is split from the single-layer into double-layer design for improving the efficiency characteristics. The optimum double-layer rotor structure is built with the help of RSM analysis. The improvement of IPMSM efficiency is verified by the Finite Element Method (FEM) results comparison with the prototype single-layer IPMSM.

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Optimal Design of Synchronous Reluctance Motor Related to Slot Number using Response Surface Methodology (반응표면방법론을 적용한 슬롯 수에 따른 동기형 릴럭턴스 전동기의 최적 설계)

  • Park, Seong-June;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2005.04a
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    • pp.117-119
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    • 2005
  • This parer presents the application of response surface methodology (RSM) to design optimization for two types of synchronous reluctance motors (SynRMs) one has 12 slots with distributed winding, and the other has 6 slots with concentrated winding, to improve the ratio between torque ripple and average torque. The usefulness of RSM in optimization problem of SynRM is verified as compared with the results of finite element analysis. In the end, the optimized two SynRMs are compared with SynRM currently used in air-conditioning compressor in connection with torque performance and loss.

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Optimal Rotor Design of Interior Permanent Magnet Motor for High Torque Using Response Surface Methodology (반응표면론법을 이용한 Interior Permanent Magnet Motor의 회전자 최적설계)

  • Ban, Ji-Hyoung;Kim, Sung-Il;Lee, Ji-Young;Hong, Jung-Pyo
    • Proceedings of the KIEE Conference
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    • 2005.04a
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    • pp.123-125
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    • 2005
  • The purpose of this paper is to optimize rotor shape of interior permanent magnet (IPM) motor for high torque. V-shaped permanent magnet arrangement is applied to obtain more torque than prototype IPM. The performance, based on finite element method, is evaluated as torque per rotor volume (TRV). In this paper, response surface methodology (RSM) is used to search optimal shape of the rotor. The usefulness of RSM in optimal design of IPM motor is verified by comparing TRV between prototype and optimized V-type.

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Optimization of BLDC Motor for Reduction of Cogging Torque Using Response Surface Methodology (반응표면방법론에 의한 BLDC 전동기의 코깅토크저감을 위한 최적화)

  • Kim, Young-Kyoun;Hong, Jung-Pyo
    • Proceedings of the KIEE Conference
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    • 2000.07b
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    • pp.647-649
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    • 2000
  • This paper presents a optimization procedure by using Response Surface Methodology(RSM) to determine design Parameters for reducing cogging torque in BLDC motor of Electric Power Steering (EPS). RSM is achieved through using the experiment design method in combination with Finite Element Method and well adapted to make analytical model for a complex problem considering a lot of interaction of these parameters. Moreover, Sequential Quadratic Problem (SQP) method is used to solve the resulting of constrained nonlinear optimization problem.

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Optimization of PEM Fuel Cell System Using a RSM (반응표면기법에 의한 고분자전해질형 연료전지 시스템의 최적화)

  • Xuan, Dongji;Kim, Jin-Wan;Nan, Yanghai;Ning, Qian;Kim, Young-Bae
    • Proceedings of the KSME Conference
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    • 2008.11b
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    • pp.3140-3141
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    • 2008
  • The output power efficiency of the fuel cell system depends on the demanded current, stack temperature, air excess ratio, hydrogen excess ratio and inlet air humidity. Thus, it is necessary to determine the optimal operation condition for maximum power efficiency. In this paper, we developed a dynamic model of fuel cell system which contains mass flow model, diffusivity gas layer model, membrane hydration and electrochemistry model. In order to determine the maximum output power and minimum use of hydrogen in a certain power condition, response surface methodology (RSM) optimization based on the proposed PEMFC stack model is presented. The results provide an effective method to optimize the operation condition under varied situations.

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Application of the Response Surface Methodology and Process Optimization to the Electrochemical Degradation of Rhodamine B and N, N-Dimethyl-4-nitrosoanilin Using a Boron-doped Diamond Electrode (Boron-doped Diamond 전극을 이용한 Rhodamine B와 N, N-Dimethyl-4-nitrosoanilin의 전기화학적 분해에 반응표면분석법의 적용과 공정 최적화)

  • Kim, Dong-Seog;Park, Young-Seek
    • Journal of Environmental Health Sciences
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    • v.36 no.4
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    • pp.313-322
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    • 2010
  • The aim of this research was to apply experimental design methodology to optimization of conditions of electrochemical oxidation of Rhodamine B (RhB) and N, N-Dimethyl-4-nitrosoaniline (RNO, indicative of the OH radical). The reactions of electrochemical oxidation of RhB degradation were mathematically described as a function of the parameters of current ($X_1$), NaCl dosage ($X_2$) and pH ($X_3$) and modeled by the use of the central composite design. The application of response surface methodology (RSM) yielded the following regression equation, which is an empirical relationship between the removal efficiency of RhB and RNO and test variables in a coded unit: RhB removal efficiency (%) = $94.21+7.02X_1+10.94X_2-16.06X_3+3.70X_1X_3+9.05X_2X_3-{3.46X_1}^2-{4.67X_2}^2-{7.09X_3}^2$; RNO removal efficiency (%) = $54.78+13.33X_1+14.93X_2- 16.90X_3$. The model predictions agreed well with the experimentally observed result. Graphical response surface and contour plots were used to locate the optimum point. The estimated ridge of maximum response and optimal conditions for the RhB degradation using canonical analysis was 100.0%(current, 0.80 A; NaCl dosage, 2.97% and pH 6.37).

Optimization for Decolorization and UV-Absorbility of Refined Sea Buckthorn Oil Using CCD-RSM (CCD-RSM을 이용한 시벅턴 오일의 탈색공정 최적화 및 자외선 흡수능력 평가)

  • Hong, Seheum;Zheng, Yunfei;Lee, Seung Bum
    • Applied Chemistry for Engineering
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    • v.32 no.1
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    • pp.61-67
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    • 2021
  • In this study, the adsorption decolorization process of sea buckthorn oil was carried out to verify the possibility of the sea buckthorn oil as a natural UV absorber. The optimization was carried out by using the central composite design model-response surface methodology (CCD-RSM). The response values of CCD-RSM were selected as the decolorization effect through the process, acid value after decolorization, and UV absorbance of the decolored oil at 290nm. The amount of adsorbent, temperature and time were selected as the process variables for the experiments. According to the results of CCD-RSM, the results of optimization were all consistent. The optimal conditions, which satisfy CCD-RSM statically and mathematically, were 4.32 wt.%, 134.90 ℃, and 19.8 min for the amount of adsorbent, temperature and time, respectively. The estimated response values expected under these optimal conditions values were 94.78%, 2.08 mg/g KOH, and 2.91 for the decolorization effect, acid value and UV absorbance at 290 nm, respectively. Also the average error from actual experiment for verifying the conclusions was smaller than 2%. Therefore, it was confirmed that the application of CCD-RSM to the adsorption decolorization process of sea buckthorn oil showed a very high level of acceptable results and that the sea buckthorn oil has high possibility to be used as a natural UV absorber.

Optimization of Saponin Extraction Conditions in Ginseng Milk using Response Surface Methodology (반응표면분석 법을 이용한 인삼우유 중 사포닌 추출조건의 최적화)

  • 이승수;박종면
    • Journal of Ginseng Research
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    • v.18 no.1
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    • pp.53-59
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    • 1994
  • To develop the methodology of the quantitative analysis of saponin in ginseng milk, conditions of the saponin extraction were optimized using the fractional factorial design with 3 variables and 3 levels by a RSM computer program. The extraction of saponin increased with an increase in extraction temperature up to $90^{\circ}C$ and then decreased significantly at $100^{\circ}C$. Extraction time affected the saponin yield in a similar trend. On the other hand, decreasing cooling temperature increased the amount of the saponin extracted. Recovery yield of the saponin from ginseng milk varied from 70.0% to 92.9%. The optimum extraction temperature, time and cooling temperature determined by partial differentiation of the model equation were $86^{\circ}C$, 2.83 hrs and $4^{\circ}C$, respectively. Key words Ginseng milk, saponin, response surface methodology.

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