• 제목/요약/키워드: Spoke

검색결과 184건 처리시간 0.026초

Spoke type IPM 모터의 토크리플 저감을 위한 회전자형상 최적설계 (The optimal design of stator shape for reducing cogging torque in spoke type IPM motor)

  • 이현;장기봉;김규탁
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2009년도 춘계학술대회 논문집 에너지변화시스템부문
    • /
    • pp.76-78
    • /
    • 2009
  • Spoke type 영구자석 전동기는 자속이 집중되어 높은 공극자속밀도를 가지는 이점이 있으나 코깅토크가 비교적 크다는 단점이 있다. 소음 진동의 원인이 되는 코깅 토크를 저감하기 위해 모델1, 모델 2를 통해 회전자의 형상을 변화시키는 일반화 계수를 찾고 이를 모델3에 적용시켜 확인하고자 한다.

  • PDF

Spoke type 모터의 코깅토크 저감을 위한 노치설계 (Design Notch to reduce Cogging Torque of Spoke type Motor)

  • 한광규;강규홍;안영규;이동엽;김규탁
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
    • /
    • pp.86-88
    • /
    • 2007
  • By reason of variation magnetic field, cogging torque is generated. Cogging torque of Spoke type motor is bigger than other type permanent magnet motor. So, this paper presents a design notch on stator and variation rotor shape to reduce cogging torque of Spoke Type motor. Through Fourier formulation of magnetic field on air gap, we found position of notch. The validity of the proposed design is confirmed with FEM analysis method.

  • PDF

Spoke type motor의 공극 형상에 따른 인덕턴스 특성 연구 (A study on characteristic of inductance according to shape of air-Hap on Spoke type motor)

  • 한광규;왕송;표세호;장기봉;김규탁
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2008년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
    • /
    • pp.41-43
    • /
    • 2008
  • This paper deals with a study on characteristic of inductance on spoke type motor. The rotor and stator is redesigned as rounding teeth of stator and pole surface of rotor. Result, a shape of air-gap is changed and the cogging torque is reduced greatly. In consequence, the inductance of spoke type motor is changed. The Finite Element Analysis(FEM) is used to characteristics.

  • PDF

영구자석의 감자를 고려한 Spoke Type 전동기의 회전자 형상 설계 (Rotor Design of Spoke Type Motor considering Demagnetization of Permanent Magnet)

  • 김대우;이태용;송준영;김용재;정상용
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2015년도 제46회 하계학술대회
    • /
    • pp.904-905
    • /
    • 2015
  • Spoke type의 전동기는 자속이 집중되어 높은 공극자속밀도를 가진다. 뿐만 아니라 spoke type 전동기는 자석의 감자가 다른 타입의 전동기들보다 쉽게 발생한다는 단점이 있다. 따라서 본 논문에는 자석감자를 고려한 형상설계를 두 개의 설계변수를 이용하여 진행하고, 이 설계변수들에 따른 감자특성을 해석하고자한다.

  • PDF

실험계획법을 이용한 집중권 권선형 Spoke type IPMSM의 형상최적설계에 대한 연구 (A Study on Optimal Pole Design of Spoke type IPMSM with Concentrated Winding for Reducing the Torque Ripple by Experiment Design Method)

  • 황규윤;권병일
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2009년도 춘계학술대회 논문집 에너지변화시스템부문
    • /
    • pp.46-49
    • /
    • 2009
  • An optimal design procedure is proposed to effectively reduce the torque ripple by optimizing the rotor pole shape of the spoke type IPMSM with concentrated winding. The procedure is composed of two steps. In step I, the steepest descent method (SDM) is used with only two design variables to rapidly approach the optimal shape. From the near optimal rotor shape as a result of the step I, the design variables are reselected and the drawing spline curves are utilized to explain more complex shape with the Kriging model in step II. By using an optimal design procedure, we show that the optimized rotor pole shape of the spoke type IPMSM effectively reduces the torque ripple while still maintaining the average torque.

  • PDF

Spoke Type 전동기 및 착자기 최적설계 (Optimum Shape Design of Spoke Type Motor and Magnetizer by Characteristic Analysis)

  • 김영현;이진경;서준;이중호
    • 전기학회논문지
    • /
    • 제65권2호
    • /
    • pp.286-297
    • /
    • 2016
  • This study proposes criteria for both optimal-shape and magnetizer-system designs to be used for a high-output spoke-type motor. The study also examines methods of reducing high-cogging torque and torque ripple, to prevent noise and vibration. The optimal design of the stator and rotor can be enhanced using both a response surface method and finite element method. In addition, a magnetizer system is optimally designed for the magnetization of permanent magnets for use in the motor. Finally, this study verifies that the proposed motor can efficiently replace interior permanent magnet synchronous motor in many industries.

용량제한과 직접수송이 있는 Hub-and-Spoke 네트워크 설계: 진화알고리듬 기반의 접근법에 의해 (A Design of Capacitated Hub-and-Spoke Networks with Direct Shipment: Evolutionary Algorithm based Approach)

  • 이현수;신경석;김여근
    • 대한산업공학회지
    • /
    • 제31권4호
    • /
    • pp.303-315
    • /
    • 2005
  • In this paper we address a design problem for hub-and-spoke networks and then consider a capacitated hub locations problem with direct shipment (CHLPwD). We determine the location of hubs, the allocation of nodes to hubs, and direct shipment paths in the network, with the objective of minimizing the total cost in the network. In this paper, CHLPwD is formulated as 0-1 integer programming. We develop an evolutionary algorithm here to solve the large sized CHLPwD. To do this, we present the representation and the genetic operators suitable for the problem and propose a heuristic method for the allocation of nodes to hubs. To enhance the search capability, problem-specific information is used in our evolutionary algorithm. The proposed algorithm is compared with the heuristic method in terms of solution quality and computation time. The experimental results show that our algorithm can provide better solutions than the heuristic.

연성 막구조의 파라메트릭 설계 시스템 개발 (Development of a Parametric Design System for Membrane Structures)

  • 최현철;이시은;김치경
    • 한국공간구조학회논문집
    • /
    • 제16권4호
    • /
    • pp.29-36
    • /
    • 2016
  • The objective of this research is to development of a parametric design system for membrane structures. The parametric design platform for the spatial structures has been designed and implemented. Rhino3D is used as a 3D graphic kernel and Grasshopper is introduced as a parametric modeling engine. Modeling components such as structural members, loading conditions, and support conditions are developed for structural modeling of the spatial structures. The interface module with commercial structural analysis programs is implemented. An iterative generation algorithm for design alternatives is a part of the design platform. This paper also proposes a design approach for the parametric design of Spoke Wheel membrane structures. A parametric modeling component is designed and implemented. SOFiSTik is examined to interact with the design platform as the structural analysis module. The application of the developed interface is to design optimally Spoke Wheel Shaped Ductile Membrane Structure using parametric design. It is possible to obtain objective shape by controlling the parameter using a parametric modeling designed for shape finding of spoke wheel shaped ductile membrane structure. Recently, looking at the present Construction Trends, It has increased the demand of the large spatial structure. But, It requires a lot of time for Modeling design and the Structural analysis. Finally an optimization process for membrane structures is proposed.

Auxetic Spoke로 설계된 비공기압 타이어의 접지압 (Contact Pressure of Non-Pneumatic Tires with Auxetic spokes)

  • 김광원;김두만
    • 한국항공우주학회지
    • /
    • 제39권8호
    • /
    • pp.719-724
    • /
    • 2011
  • 비공기압 타이어(Non-Pneumatic tire)는 공기압 타이어와는 다르게 스포크(Spoke)로 공기압의 역할을 담당하는 새로운 타이어이다. 이 타이어는 공기압 타이어의 펑크에 대한 위험과 공기압 유지가 필요 없는 장접을 가졌으며, 공기가 존재하지 않는 우주에서도 사용이 가능하다. 본 연구에서는 음의 각으로 이뤄진 허니컴 구조의 비공기압 타이어를 수직 하중에 따른 접지압을 구하여, 이를 공기압 타이어와 비교하였다.