• Title/Summary/Keyword: Pole arcs

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The Design Conditions of Single Phase SRM Pole-Arcs for Blower Drives (송풍기 구동용 단상 SRM의 극호 설계 조건)

  • Lee, Jong-Han;Lee, Eun-Woong
    • Proceedings of the KIEE Conference
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    • 2003.10b
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    • pp.125-127
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    • 2003
  • The single phase switched reluctance motor(SRM) is more simpler and robust in the structure than poly phase SRM. It has the merits that it reduces the switching elements and the energy density per volume is very high. Recently, it has been researched and developed in various types and starting method due to the technique of power electronics and the computer added design. The single phase SRM is tried to apply to many industrial appliance field to substitutethe the induction motor by the single phase SRM. On the previous studies, we decided the design parameters of the single phase SRM for the blower driver to adapt the design method of the conventional machine and the poly phase SRM. In this studies, it is proposed the conditions to decide the optimal pole arcs because the stator and rotor pole arcs is very important in the characteristics of the single phase SRM. For this reason, it is analysed the characteristics of current on/off angle vs. pole arc, pole arcs vs. average torque.

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Design of Switched Reluctance Motor for Minimizing the Torque Ripple (스위치드 릴럭턴스 전동기의 토오크 리플 저감 설계)

  • Kim, Youn-Hyun;Choi, Jae-Hak;Kim, Sol;Lee, Ju;RhYu, Se-Hyun;Sung, Ha-Kyung;Im, Tae-Bin;Borm, Jin-hwan
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.51 no.7
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    • pp.339-350
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    • 2002
  • Pole arcs, turn-on angle, and turn-off angle are major design factors, which affects Switched Reluctance Motor's torque performance. If these design factors are considered independently, the enhancement of SRM performance is restricted. Therefore, we need to consider pole arcs, turn-on angle and turn-off angle at the same time, when we design SR. In this paper, we analyze how these factors affect to torque ripple and average torque by using dynamic Finite Element Method(FEM) with derive circuit and present the good design results according to the various speeds. Especially, we formulate turn-on and turn-off angle from a voltage equation and present effective design range.

Finite Element Analysis considering Asymmetric Bridge Converter in 6/4 Switched Reluctance Motor (비대칭 브리지 컨버터를 고려한 6/4 스위치드 릴럭턴스 전동기의 유한요소 해석)

  • Choi, Jae-Hak;Park, Jae-Bum;Lee, Seung-Jun;Ahn, Byeong-Lib;Lee, Ju;Kim, Suk-Tae
    • Proceedings of the KIEE Conference
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    • 2003.07b
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    • pp.720-722
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    • 2003
  • This paper Presents a design schemes to minimize torque ripple in 6/4 Switched Reluctance Motor (SRM) using transient Finite Element Analysis (FEA) in which the magnetic field is combined with a driving circuit. Pole arcs and switching angles are major design factors. If these design factors are considered independently, the enhancement of SRM Performance is restricted. Therefore, this paper proposes not only optimal combination of stator pole arc and rotor pole arc but also the turn-on and turn-off angles as a function of pole arcs. Especially, turn-on and turn-off angle are formulated from a voltage equation and feasible design ranges are suggested with variable speed.

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The Comparison of Characteristics for SR motor with vehicle power supply (차량용 SR 전동기의 상수변화에 따른 특성비교)

  • Choi, Kyeong-Ho;Kim, Kyeong-Sik;Chin, Myung-Churl
    • Proceedings of the KIEE Conference
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    • 2003.10b
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    • pp.45-47
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    • 2003
  • This paper presents the design results and characteristics analysis of SRM for vehicle power supply. For Adaptable design of the SRM, Variable design parameters, such as stator and rotor laminations, winding details, pole numbers, and pole arcs, phases numbers are required. So, in this paper the SRM design results and the comparison of characteristics for vehicle power supply as phases changed are described.

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A Characteristic Analysis of SRM for vehicle with Different Phase Number (전동차용 SRM의 상수변화에 따른 특성 해석)

  • Choi Kyeong-Ho;Kim Kyeong-Sik;Chin yung-Churl
    • Proceedings of the KIPE Conference
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    • 2004.07b
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    • pp.981-984
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    • 2004
  • This paper presents the design results and characteristic analysis of SRM. For vehicle power supply for adaptable design of the SRM, variable design parameters, such as stator and rotor laminations, winding details, pole numbers, and pole arcs, phases numbers are required. So, in this paper the SRM design results and the comparison of characteristics for vehicle power supply as phases changed are described.

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Construction and Characteristics of Single Phase Switched Reluctance Motor

  • Oh, Young-Woong;Lee, Eun-Woong;Lee, Jong-Han;Kim, Jun-Ho
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.4B no.1
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    • pp.6-11
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    • 2004
  • The single phase switched reluctance motor (SRM) has many merits; simple structure and driving circuits, easy operation and speed control, and etc. This paper presents the torque characteristics of disk type single phase SRM by changing the salient pole lengths and pole arcs. The prototype single phase SRM has a three dimensional magnetic flux pattern because of its structure. That is, the radial and axial magnetic flux contributes to torque generation. Thus, 3D analysis is required for computation of its magnetic field. In this paper, 3D FEM is used for analyzing the magnetic flux distribution and magnetic co-energy.

Basic Design of Bearingless Switched Reluctance Motor with Hybrid Stator poles

  • Wang, Huijun;Liu, Jianfeng;Ahn, Jin-Woo
    • Journal of international Conference on Electrical Machines and Systems
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    • v.1 no.3
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    • pp.336-346
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    • 2012
  • In this paper, a novel bearingless switched reluctance motor (BLSRM) with hybrid stator poles is proposed. The structure and operating principle are presented. In order to describe the design methodology clearly, analytical torque and radial force models are established. Further, basic design procedure is described. The numbers of phases and poles have important influence on the selection of structure. These effects, along with sizing of machine envelope and internal dimensions, make the machine design an insight-intensive effort. Effect of pole arcs and air-gap length on the production of torque and radial force are analyzed in detail. Mechanical design factors such as hoop stress and first critical speed are also considered. Based on the above analysis, the characteristics of the proposed BLSRM are analyzed. A prototype motor is designed and manufactured. The validity of the proposed structure is verified by the experimental results.

Measuring the Average Torque according to Exciting Region of Single Phase SRM (단상 SRM의 여자구간에 따른 평균 토크 측정)

  • Kim Yong-Heon;Lee Eun-Woong;Lee Jong-Han;Lee Hyeon-Woo;Kim Jun-ho
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.989-991
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    • 2004
  • There are many elements that affect the average torque of the single phase SRM. It is related with the stator and rotor pole arcs, the dwell angle of the exciting current, the turn on/off angle, etc., Most of all, the turn on/off angle is affect the design procedure of the driving and control circuit. So, in this study, it is intend to analyze the effect that the variations of the turn on/off angle affects the average torque. and then this analyses will be used to design the control driver of the single phase SRM.

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