• Title, Summary, Keyword: Concentrated winding

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Improvement of Output Characteristics and Acoustic Noise Characteristics for Single Phase Induction Motor with Concentrated Winding (집중권 방식 단상유도기의 출력 및 소음 특성 개선)

  • Chae, Myong-Gi;Cha, Hyun-Rok;Yun, Cheol-Ho;Jung, Tae-Uk
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.4
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    • pp.693-698
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    • 2007
  • In general the distributed winding method is applied for induction motor in order to have the sinusoidal flux distribution. Recently the concentrated winding method is the interested technique so as to lower the material cost portion of copper coil. In the concentrated winding induction motor the harmonic flux and the torque deterioration by it would be occurred. To restrain ill effect of harmonic flux distribution by concentrated winding, the skew of rotor conduction bar is very important design variable. This study is focused on the optimal design of rotor bar's skew and winding turns for concentrated winding induction motor. In this study, the control method of harmonic parasitic torque in concentrated winding induction motor is proposed and validated its practicality through the experiment. As a result of this study, large skew angle which was not conventional in distributed winding was favorable in the concentrated winding induction motor. The concentrated winding induction motor which is designed per the proposed method of this study can be manufactured more cost effectively than conventional distributed winding.

Design and Characteristics Analysis on Linear Synchronous Motor with Long Stator and Phase Concentrated Winding (긴고정자 상집중권 선형 동기 전동기의 설계 및 특성 해석)

  • Kim, Jeong-Man;Cho, Han-Wook;Jang, Seok-Myeong;Jo, Jeong-Min;Han, Young-Jae
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.1
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    • pp.54-62
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    • 2014
  • This study deals with the design and characteristics analysis on a linear synchronous motor (LSM) with a long stator and phase concentrated winding (PCW) to apply for a propulsion system such as a roller coaster for leisure facilities. First of all, the required propulsion force of LSM is computed and its design with double sided permanent magnets (PMs) and a phase concentrated winding is processed. The phase concentrated winding is composed of a module with each A, B, and C phase unlike an conventional concentrated winding (CW). It has an advantage of the installation and manufacture, compared to the conventional concentrated winding in the propulsion system for leisure facilities that have a long acceleration area and stator configuration placed on rail continuously. Thus, the design for the propulsion system and characteristics comparison between the phase concentrated winding and concentrated winding are carried out in this paper. Also, the analysis on dynamic characteristics is conducted to confirm the performance at operation.

Performance Comparison of the Railway Traction IPM Motors between Concentrated Winding and Distributed Winding

  • Park, Chan-Bae;Lee, Byung-Song;Lee, Hyung-Woo
    • Journal of Electrical Engineering and Technology
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    • v.8 no.1
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    • pp.118-123
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    • 2013
  • This paper presents performance comparison between concentrated winding and distributed winding of IPMSM (Interior Permanent Magnet Synchronous Motors) which is recently used for light-weight railway applications. Motors are designed on various schemes and analyzed by using FEM (Finite Element Method) instead of EMCNM (Equivalent Magnetic Circuit Network Method) in order to take into account saturation and non-linear magnetic property. The overall performance such as torque, torque ripple, losses, demagnetization, efficiency, power density and so on are investigated in detail at the rated and maximum operating speed. The results of the analysis found that both concentrated and distributed winding IPMSMs are promising candidates for high power railway traction motor.

The Characteristic Analysis of Concentrated Winding Synchronous Reluctance Motor Vs. distributed Winding Synchronous Reluctance Motor through Experiments (실험을 통한 집중권선형 SynRM과 분포권 SynRM의 특성분석)

  • Lee, Byeong-Du;Lee, Jung-Ho;Lee, Seung-Chul
    • Proceedings of the KIEE Conference
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    • pp.1051-1052
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    • 2011
  • This paper deals with optimum design criteria to minimize the torque ripple of a concentrated winding Synchronous Reluctance Motor(SynRM) using Response Surface Methodology(RSM). The feasibility of using RSM with the finite element method(FEM) in practical engineering problem is investigated with omputational examples and comparison between the fitted response and the results obtained from an analytical solution according to the design variables of stator and rotor in concentrated winding SynRM(6slot). The focus of this paper is the efficiency evaluation on the basis of load condition in a Concentrated Winding Synchronous Reluctance Motor and distributed Winding Synchronous Reluctance Motor.

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

  • Park Seong-June;Lee Jung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.2
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    • pp.69-75
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    • 2006
  • This paper deals with the optimum design solution on reduction of torque ripple for a Synchronous Reluctance Motor with concentrated winding using response surface methodology. The coupled Finite Elements Analysis (FEA) & Preisach model have been used to evaluate the nonlinear solution. Comparisons are given with characteristics of a SynRM according to the stator winding, slot number, open width of slot, slot depth, teeth width variation in concentrated winding SynRM, respectively. This paper presents an optimization procedure using Response Surface Methodology (RSM) to determine design parameters for reducing torque ripple. 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. Moreover, Sequential Quadratic Problem (SQP) method is used to solve the resulting of constrained nonlinear optimization problem.

Comparison of Concentrated and Distributed Winding in an IPMSM for Vehicle Traction (차량 견인용 IPMSM의 집중권과 분포권 비교)

  • Oh, Se-Young;Im, Jong-Bin;Ham, Sang-Hwan;Jo, Su-Yeon;Yu, Gwang-Hyeon;Lee, Ho-Yong;Lee, Ju
    • Proceedings of the KIEE Conference
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    • pp.842-843
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    • 2011
  • Winding methods of the interior permanent magnet synchronous motor for vehicle traction have two kinds. They are concentrated winding and distributed winding. They have merits and demerits and influence motor performance. Therefore, this paper present designs that concentrated winding and distributed winding motor what they have same capacity. And each motor characteristic was analyzed by finite element analysis.

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A Study for Improving a Thermal Performance of Liquid Cooled Permanent Magnet Synchronous Machine with Concentrated Winding (집중권 방식 영구자석 동기전동기의 냉각특성 개선에 관한 연구)

  • Kang, Kyong-Ho;Ahn, Su-Hong;Yoon, Young-Duk;Yu, Suk-Jin;Ahn, Hyo-Chul
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.4
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    • pp.555-566
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    • 2012
  • This paper presents a thermal analysis of an interior PM synchronous machine with concentrated winding for electric vehicle. The conventional thermal equivalent network model has been used for a long time for calculation of the temperature rises in electrical machines. In spite of being popular, this method can not be applied correctly for elements with complicated cooling structure like liquid cooled housing. To overcome this drawbacks, in this paper, a hybrid thermal model using the result of CFD analysis partly. Using this method, to improve a thermal performance of PMSM with concentrated winding, the effects of two design parameters are analysed. Finally, the accuracy of this model has been verified by experiments for the developed 21kW motor.

Effect of Slot Opening on the Cogging Torque of Fractional-Slot Concentrated Winding Permanent Magnet Brushless DC Motor

  • Yan, Jianhu;Zhang, Qiongfang;Feng, Yi
    • Journal of Magnetics
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    • v.21 no.1
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    • pp.78-82
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    • 2016
  • Cogging torque will affect the performance of a permanent magnet Brushless DC Motor (BLDCM), thus the reduction of cogging torque is key for BLDCM optimization. In this paper, the phase shifting of cogging torque for a fractional-slot concentrated winding BLDCM is analyzed using the Maxwell tensor method. Moreover, a 9-slot 10-pole concentrated winding BLDCM driven by ideal square waveform is studied with the finite element method (FEM). An effective method to reduce the cogging torque is obtained by adjusting the slot opening. In addition, the influences of different slot openings on back electromotive force (back-EMF), air gap flux density and flux linkage are investigated and experimentally validated using the prototype BLDCM.

General Characteristic of Fractional Slot Double Layer Concentrated Winding Synchronous Machine

  • Seo, Un-Jae;Chun, Yon-Do;Choi, Jae-Hak;Chung, Shi-Uk;Han, Pil-Wan;Koo, Dae-Hyun
    • Journal of Electrical Engineering and Technology
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    • v.8 no.2
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    • pp.282-287
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    • 2013
  • The concentrated winding configurations offer significant advantage for reducing end windings. These machines are generally used in low speed high torque application due to relatively low copper loss. However, numbers of fractional slot construction make the designer hard to properly choose pole and slot numbers for the certain application. This paper provides the general information of possible fractional slot concentrated double layer winding machine.

Rotor & Stator 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 및 고정자 설계)

  • Choi, Yun-Chul;Lee, Jung-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.12
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    • pp.2145-2149
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    • 2007
  • This paper deals with optimum design criteria to minimize the torque ripple of a concentrated winding Synchronous Reluctance Motor (SynRM) using Response Surface Methodology (RSM). The feasibility of using RSM with the finite element method (FEM) in practical engineering problem is investigated with computational examples and comparison between the fitted response and the results obtained from an analytical solution according to the design variables of stator and rotor in concentrated winding SynRM (6slot).