• 제목/요약/키워드: Switched reluctance motor

검색결과 651건 처리시간 0.09초

Unity Power Factor Control of Sensorless Switched Reluctance Motor

  • Jeyakumar, A. Ebenezer;Shanmuganandan, K.J.
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1147-1152
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    • 2004
  • Switched Reluctance Motors have an inexpensive, intrinsic simplicity and low cost that makes them well suited to home appliance and office applications. However the motor suffering with necessity of shaft position sensor, lead to non-linearity of operations. Further, the involvement of static converters deteriorates the operational power factor. Implementation of a sensorless algorithm, can remove the need of position sensors. Also, the drive includes a compact power factor control in the input stage by implementing Zero Current Switching Quasi-Resonant Boost Technology. This paper presented, aims at optimized low line current distortion, high power factor, low cost and a shaft position sensorless Switched Reluctance Motor drive.

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Output Characteristics of Linear Switched Reluctance Motor with YBCO Tape Conductors

  • Hirayama, Tadashi;Asakawa, Shinichiro;Kawabata, Shuma
    • Journal of international Conference on Electrical Machines and Systems
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    • v.2 no.4
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    • pp.394-398
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    • 2013
  • This paper presents output characteristics of a linear switched reluctance motor (LSRM) with excitation windings wound by using high-temperature superconducting (HTS) tapes. In a double-sided LSRM, Bi-2223 or YBCO tape conductors are used for the excitation windings. The characteristics of the LSRM are obtained by a finite element method analysis. We can obtain large thrust compared with a conventional LSRM by using YBCO tape conductors. Also, the effect of a configuration of the YBCO coil on the thrust is calculated. We discuss a suitable coil configuration for the average thrust upgrading.

Adaptive Control of Switched Reluctance Motor Drives under Variable Torque Applications

  • Namazi, Mohammad Masoud;Rashidi, Amir;Koofigar, Hamidreza;Saghaiannejad, Seyed Morteza;Ahn, Jin-Woo
    • Journal of Electrical Engineering and Technology
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    • v.12 no.1
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    • pp.134-144
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    • 2017
  • This paper presents an adaptive control strategy for the speed control of a four-phase switched reluctance motor (SRM) in automotive applications. The main objective is to minimize the torque ripples, despite the unstructured uncertainties, time-varying parameters and external load disturbances. The bound of perturbations is not required to be known in the developing of the proposed adaptive-based control method. In order to achieve a smooth control effort, some properties are incorporated and the proposed control algorithm is constructed using the Lyapunov theorem where the closed-loop stability and robust tracking are ensured. The effectiveness of the proposed controller in rejecting high perturbed load torque with smooth control effort is verified with comparing of an adaptive sliding mode control (ASMC) and validated with experimental results.

횡자속형 스위치드 리럭턴스 전동기의 설계 및 특성 해석 (Design and Characteristics Analysis of a Transverse Flux Type Switched Reluctance Motor)

  • 김경호;조윤현;구대현;정연호;강도현
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • v.51 no.1
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    • pp.7-15
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    • 2002
  • The paper proposes the characteristics analysis for a Transverse flux type Switched Reluctance Motor(TSRM) considering the nonlinear magnetic phenomena. To investigate the nonlinear parameters of magnetic equivalent circuit, the designed TSRM is analyzed by the 2D and 3D finite element method as functions of input current and angular displacement. On the base of FEM analysis results, the current, torque, back EMF and output power wave of TSRM are simulated from the motion equation by MATLAB/Simulink. The simulated performance characteristics for a 4-phase, 24-pole TSRM are verified by experimental results of a prototype TSRM.

토크 리플 저감을 위한 스위치드 릴럭턴스 모터의 직접 토크 제어 (Direct Torque Control of Switched Reluctance Motor for Torque Ripple Reduction)

  • 김윤현;김태형;이주
    • 대한전기학회논문지:전기기기및에너지변환시스템부문B
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    • v.53 no.5
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    • pp.283-294
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    • 2004
  • This paper introduces the new Direct Torque Control(DTC) method based on the estimated torque in Switched Reluctance Motor(SRM) and applies the proposed DTC to SRM for the instantaneous torque ripple reduction. The nonlinear characteristics of SRM is considered in the calculation of the estimated torque and the theory is described in this paper. Current control is one of the kernel elements of torque controller and the performance of the current control should be high for this work. But the conventional PI current control has a weak point in SRM application because of motional EMF. Consequently, this paper makes up for the weakness of PI controller through present of new current controller, that is termed the non-interference current control. The ability of proposed torque and current controller is verified through simulation and experiment.

영구자석이 사용된 스위치드 릴럭턴스 전동기의 특성 해석 (Characteristic analysis of switched reluctance motor including permanent magnet)

  • 장석명;박지훈;최장영;성호경
    • 대한전기학회:학술대회논문집
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    • pp.119-121
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    • 2006
  • This paper deals with characteristic analysis of switched reluctance motor including permanent magnet. First, we calculated flux density of switched reluctance motor according to position. Second, analyzed normal force and horizontal force from flux density of machine according to position. Also, analysis result compares with data that is derived through a finite element analysis (FEA), and proved validity.

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앞선각 제어를 위한 단상 SRM 회전자설계 (Rotor Design of Single Phase Switched Reluctance Motor for Advance Angle Control)

  • 오주환;권병일
    • 대한전기학회:학술대회논문집
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    • pp.92-94
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    • 2006
  • Single phase switched reluctance motor has a high speed capability, due to its very robust rotor, and requires only one electronic power switch in its control circuitry. The latter feature considerably reduces the cost of the drive system. But it involves starting problem and strongly torque ripple, which means that the motor is not suitable for application that require constant torque or speed. To solve torque ripple and region of these problem, this paper presents a single phase Switched Reluctance Motor model with a barrier rotor pole. Also it is simulated the designed prototype model by FEM for the prediction of characteristics.

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DESIGN OF A HIGH-SPEED HIGH-POWER SWITCHED RELUCTANCE MOTOR

  • Jacket F. Gieras;Park, Jaeho
    • Journal of Power Electronics
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    • v.1 no.1
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    • pp.19-25
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    • 2001
  • A high speed, three phase, 12/8 pole, 225 kW switched reluctance motor (SRM) has been designed and analyzed. A circuital approach has been used to find the geometry, windings parameters and electromagnetic loading. Then, the 3D finite element method (FEM) has been used to calculate the static torque more accurately and optimize the design. The efficiency of the designed SRM is almost constant over wide range of speed and its phase current is less sensitive to the speed than that of an induction motor of the same rating. Recommendations for manufacturers and users are given.

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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.

Characteristic Analysis of Two-Phase 4/5-Pole Switched Reluctance Motor

  • 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.347-353
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    • 2012
  • Design and analysis of a novel 2-phase 4/5 Switched Reluctance Motor(SRM) is presented. The proposed motor employs a novel stator pole configuration. A novel SRM employs four-rotor and five-stator poles. The motor has no dead-zone and can be operate at any rotor position. The structure and operating principle are also described. The comparison between the proposed motor and a conventional two-phase 4/2 SRM is undertaken in this analysis. Furthermore, the Finite Element Analysis(FEA) and matlab-simulink are used to predict and simulate the performance of a proposed motor. The results of investigation indicate that the proposed structure offers a better performance in term of torque production.