• Title/Summary/Keyword: Flux-switching

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Optimum Design Criteria for Maximum Torque Density and Minimum Torque Ripple of Flux Switching Motor using Response Surface Methodology

  • Lee, Jung-Ho;Lee, Tae-Hoon
    • Journal of Magnetics
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    • v.15 no.2
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    • pp.74-77
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    • 2010
  • This paper deals with optimum design criteria for maximum torque density & minimum torque ripple of a Flux Switching Motor (FSM) using response surface methodology (RSM) & finite element method (FEM). The focus of this paper is to find a design solution through the comparison of torque density and torque ripple which vary with rotor shape. And then, a central composite design (CCD) mixed resolution was introduced and analysis of variance (ANOVA) was conducted to determine the significance of the fitted regression model. The proposed procedure allows one to define the rotor dimensions, starting from an existing motor or a preliminary design.

Optimum Rotor Shape Design of Flux Switching Motor using RSM and Performance Improvement by New Type Winding Method (RSM을 이용한 FSM의 로터 형상 설계와 특성 개선을 위한 새로운 권선 기법)

  • Jun, Myung-Jin;Jang, Soon-Myung;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.1059-1060
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    • 2011
  • This paper deals with optimum design criteria for maximum torque density & minimum torque ripple of Flux Switching Motor (FSM) using RSM & FEM. The focus of this paper is to find a design solution through the comparison of torque density and torque ripple according to rotor shape variations. And then, a central composite design(CCD) mixed resolution is introduced, and analysis of variance (ANOVA) is conducted to determine the significance of the fitted regression model.

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Optimum Design Criteria for Maximum Torque Density & Minimum Torque Ripple of Flux Switching Motor using RSM & FEM (반응표면법과 유한요소법을 이용한 플럭스 스위칭 전동기의 최대토크밀도와 최저토크리플을 위한 최적설계)

  • Kim, Young-Hyun;Lee, Jung-Ho;Kim, Nam-Hoon;Koo, Bon-Sam;Kim, Chan-Hui
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.3
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    • pp.549-554
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    • 2010
  • This paper deals with optimum design criteria for maximum torque density & minimum torque ripple of Flux Switching Motor (FSM) using RSM & FEM. The focus of this paper is to find a design solution through the comparison of torque density and torque ripple according to rotor shape variations. And then, a central composite design(CCD) mixed resolution is introduced, and analysis of variance (ANOVA) is conducted to determine the significance of the fitted regression model.

Optimum Design Criteria for Maximum Torque Density & Minimum Torque Ripple of Flux Switching Motor using RSM & FEM (반응표면법과 유한요소법을 이용한 플럭스 스위칭 전동기의 최대토크밀도와 최저토크리플을 위한 최적설계)

  • Kim, Young-Hyun;Yun, Tae-Won;Lee, Jung-Ho
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.414.1_415.1
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    • 2009
  • This paper deals with optimum design criteria for maximum torque density & minimum torque ripple of Flux Switching Motor (FSM) using RSM & FEM. The focus of this paper is to find a design solution through the comparison of torque density and torque ripple according to rotor shape variations. And then, a central composite design(CCD) mixed resolution is introduced, and analysis of variance (ANOVA) is conducted to determine the significance of the fitted regression model.

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Comparative Study of Dual-airgap Flux Switching and Spoke-type Interior Permanent Magnet Machines with Phase-group Concentrated-coil Windings (상 그룹 집중권 권선을 갖는 2중 공극 플럭스 스위칭기기와 스포크타입 매입형 영구자석 기기의 비교 연구)

  • Zhao, Wenliang;Kwon, Byung-il
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.680-681
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    • 2015
  • This paper proposes a comparative study of dual-airgap flux switching permanent magnet (FSPM) and spoke-type interior permanent magnet (S-IPM) machines equipped with phase-group concentrated-coil (PGCC) windings. Both of the investigated machines are the same size and material amounts which are compared at the same operating conditions. All the relevant machine performance including back electromotive force (EMF), cogging torque, and electromagnetic torque are analyzed by a 2-D time-stepping finite element method (FEM).

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A Study on Flux Switching Motor Drive Using Special-purpose IC (전용 IC를 이용한 FSM 드라이브에 대한 연구)

  • Kim, Nam-Hun;Goo, Bon-Kwan;Kim, Min-Huei;Choi, Keyng-Ho;Whang, Don-Hwa
    • Proceedings of the KIPE Conference
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    • 2010.07a
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    • pp.53-54
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    • 2010
  • 최근에는 전동 공구(Power tools)와 가전 제품에 있어서 전자적인 전류(Commutation)를 사용하는 새로운 형태의 브러시리스 전동기인 플럭스 스위칭 전동기(Flux switching motor)에 대한 관심이 점차적으로 증가되고 있으며, 특히 팬과 펌프 시장에 있어서는 그린 정책으로 인하여 플럭스 스위칭 전동기에 대한 관심이 급격히 증가되고 있다. 플럭스 스위칭 전동기는 유도전동기에 비해서는 높은 전력 밀도(power density)와 상대적으로 높은 효율, 그리고 브러시리스 DC 전동기에 비해서는 간단한 전동기 구조와 가격 경쟁력이라는 장점을 가지고 있다. 따라서 본 논문에서는 팬 용도로 제작된 12/6 폴을 가지는 플럭스 스위칭 전동기 드라이브 구성을 위해 전용 IC를 사용하여 제작하였으며, 제작된 시스템의 타당성을 검증하기 위해서 실험결과를 제시한다.

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A Study on Flux Switching Motor drive for Fan Application (팬용 플럭스 스위치 전동기 드라이브에 대한 연구)

  • Kim, Nam-Hun;Kim, Jung-Chul;Lee, Joong-Ho;Koo, Bon-Sam;Kim, Min-Huei;Baik, Won-Sik
    • Proceedings of the KIEE Conference
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    • 2009.04b
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    • pp.136-138
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    • 2009
  • A new class of electronically commutated brushless motor, the flux-switching motor(FSM) is gradually emerging in power tools and household appliances especially fan application. This motor offers advantages of both high-power density and relatively high efficiency This paper presents the principle of the FSM and design of the 12/6 pole FSM drive system. Finally, test results of the prototype motor are provided to verify a validity of the fan application.

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Energy Model Based Direct Torque Control of Induction Motor Using IP Controllers

  • Mannan, Mohammad Abdul;Murata, Toshiaki;Tamura, Junji
    • Journal of international Conference on Electrical Machines and Systems
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    • v.1 no.4
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    • pp.405-411
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    • 2012
  • This paper deals with direct torque control of an induction motor (IM) with constant switching frequency. The desired torque is obtained from the speed controller which is designed using the IP controller. Decoupling control of torque and flux is developed based on the energy model of IM using the IP controller strategies. The desired d-axis and q-axis stator voltage components are obtained from the designed controller, which decouples torque and flux. The constant switching frequency can be applied using space-vector pulse width modulation, since the desired stator voltage can be known from the decoupling torque and flux controllers. In order to achieve stable operation of the proposed IP controllers, the gains of the controllers are chosen by setting the poles in negative (left) half of s-plane and by choosing the rising time for the response of the step function. The proposed controller was verified in simulations using Matlab/Simulink and results have proven excellent performance. It was found that the proposed IP controllers can provide excellent performance to track the desired torque and speed and to reject the disturbance of load.

A Novel Direct Torque Control of Induction Machines based on Stator Flux (고정자 자속을 기반으로 한 유도전동기의 새로운 직접 토크 제어)

  • 박준현;정종진;최종우;김흥근;노의철;부경대학교전기제어계측공학부조교수
    • The Transactions of the Korean Institute of Power Electronics
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    • v.7 no.3
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    • pp.297-302
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    • 2002
  • The direct torque control(DTC) of induction machines has the advantages of a simple control scheme and a very quick and robust torque response and its application is extended in the traction field. However, some drawbacks of the conventional DTC strategy using a hysteresis controller are the relatively large torque ripple in the steady state and the variation of switching frequency according to the amplitude of hysteresis bands and the motor operating conditions. In this paper, a navel direct t()roue control scheme of induction machines based on stator flux control and Space Vector Modulation Is proposed to acquire the advantage of a fixed switching period and the minimization of the torque and stator current ripple in a wide speed range. The effect of proposed method has been proven by simulations and experiments.

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

  • Ahmad, M.Z.;Sulaiman, E.;Kosaka, T.
    • Journal of Magnetics
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    • v.20 no.3
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    • pp.265-272
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    • 2015
  • In recent years, flux switching machines (FSMs) have been an attractive research topic owing to their tremendous advantages of robust rotor structure, high torque, and high power capability suitable for intensive applications. However, most of the investigations are focusing on the inner-rotor structure, which is incongruous for direct drive applications. In this study, high torque and power densities of a new 12S-14P outer-rotor permanent magnet (PM) FSM with a DC excitation coil was investigated based on two-dimensional finite element analysis for in-wheel direct drive electric vehicle (EV). Based on some design restrictions and specifications, design refinements were conducted on the original design machine by using the deterministic optimization approach. With only 1.0 kg PM, the final design machine achieved the maximum torque and power densities of 12.4 Nm/kg and 5.93 kW/kg, respectively, slightly better than the inner-rotor HEFSM and interior PM synchronous machine design for EV.