• Title, Summary, Keyword: switched reluctance motor

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Reduction Characteristics of Vibration and Acoustic Noise of SRM Using Hybrid Excitation Method (하이브리드 여자방식을 이용한 SRM의 진동 소음 저감 특성)

  • Kim, Chang-Seop;O, Seok-Gyu;An, Jin-U
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.50 no.9
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    • pp.438-444
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    • 2001
  • The simple motor construction and low cost, fault tolerant power electronic drive has made the switched reluctance drive a strong contender for many applications. But the switched reluctance drive does exhibit higher levels of vibration and acoustic noise than that of most competing drives. The main source of vibration in the switched reluctance drive is generated by rapid change of radial force when phase current is extinguished during commutation action. In this paper, a hybrid excitation method is proposed to reduce vibration and acoustic noise of the switched reluctance drive. The hybrid excitation has 2-phase excitation by long dwell angle as well as conventional 1-phase excitation. The vibration and acoustic noise are reduced because the scheme reduces abrupt change of excitation level by distributed and balanced excitation.

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Hybrid Excitation Control of SRM Drive for Reduction of Vibration and Acoustic Noise

  • Lee, Dong-Hee;Lee, Sang-Hun;Ahn, Jin-Woo;Park, Sung-Jun
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.11B no.4
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    • pp.151-155
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    • 2001
  • The simple motor construction and low cost, fault tolerant power electronic drive has made the switched reluctance drive a strong contender for many applications. But the switched reluctance drive does exhibit higher levels of vibration and acoustic noise than that of most competing drives. The main source of vibration in the switched reluctance drive is generated by rapid change of radial magnetic force when phase current is extinguished during commutation action. In this paper, a hybrid excitation method is proposed to reduce vibration and acoustic noise of the switched reluctance drive. The hybrid excitation has 2-phase excitation by long dwell angle as well as conventional 1-phase excitation. The vibration and acoustic noise are reduced because the scheme reduces abrupt change of excitation level by distributed and balanced excitation.

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A Novel 6/5 Switched Reluctance Motor with Short Flux Path: Concept, Design and Analysis

  • Tanujaya, Marully;Lee, Dong-Hee;An, Young-Joo;Ahn, Jin-Woo
    • Journal of international Conference on Electrical Machines and Systems
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    • v.1 no.1
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    • pp.47-53
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    • 2012
  • A novel 6/5 switched reluctance motor (SRM) with short flux path is presented in this paper. The concept of this proposed motor is a novel SR motor with six stator and five rotor poles. The stator is constructed with three independent and physically separate C-core segments, and the rotor is composed of five poles. This motor, with a new selection for the number of stator/rotor poles, achieves a short flux path, which reduces the magnetomotive force required to drive the motor. To verify the performance of the proposed motor, a comparison with conventional SR motors with the same dimensions is executed. The comparison demonstrates that the proposed motor offers better performance in terms of maximum torque production. Furthermore, Finite Element Analysis (FEA) and Matlab/Simulink software are used to predict and simulate the performance of the proposed motor.

Characteristic Analysis and Design of a Single Phase Switched Reluctance Motor for High Speed Application

  • Kim, Youn-Hyun
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.4B no.3
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    • pp.114-121
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    • 2004
  • Switched reluctance motors have received much attention as a driving means for various industrial applications because they have simple construction, low cost and high efficiency. Nevertheless, the requirements of drive converters make it difficult to lower the overall system cost as compared with the DC motor application. Single phase switched reluctance motors (SPSRMs) provide a solution to the high cost problem since the number of switching power devices can be reduced and consequently the trials for application are increased. However, research involving SPSRMs, especially in the area of design work, is insufficient. This paper introduces a novel design methodology of single phase SRM. The design work for SPSRM comprises the determination of many variables such as stator and rotor pole arc as well as on, off and so on. Managing all variable combinations leads to lengthy computation time and a fault in the design process. For that reason, a reliable technique and brief procedure term are required in SPSRM design.

Low Cost Motor Drive Technologies for ASEAN Electric Scooter

  • Tuan, Vu Tran;Kreuawan, Sangkla;Somsiri, Pakasit;Huy, Phuong Nguyen
    • Journal of Electrical Engineering and Technology
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    • v.13 no.4
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    • pp.1578-1585
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    • 2018
  • This work investigates two different motor drive technologies, switched reluctance motor (SRM) and induction motor (IM). They are designed optimally to meet the desired performances for electric scooters. The comparison of both motors is described in terms of performances and material cost. With the similar constraint, induction motor performs slightly better than switched reluctance motor. But this must be traded-off with higher weight and cost. Both drive systems are, however, suitable for electric scooter application. Finally, the range simulations are conducted on a European urban driving cycle, ECE15 driving cycle and a more realistic cycle, Bangkok driving cycle. The e-scooter ranges are varied from 36 to 109 km depending on driving cycle, motor technology and number of passengers.

Analysis of the Axially Laminated Anisotropic Switched Reluctance Motor by Finite Element Method (유한 요소법에 의한 축방향 성충 스위치드 릴럭턴스 모타의 특성 해석)

  • Park, Jeong-Tae;Jung, Hoon;Won, Jong-Soo
    • Proceedings of the KIEE Conference
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    • pp.33-36
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    • 1989
  • In designing reluctance motor, it is important to know the flux distribution of the inside of the motor. The reluctance motor which has axially laminated anisotropic(a.l.a.) rotor was proved to have high efficiency. To analyze this motor, it needs to consider the anisotropic characteristic of the rotor. This paper shows the flux distribution of the a.l.a. reluctance motor by finite element method (FEM) considering the anisotropic characteristic and the saturation of the core. And this paper shows the static torque for the variation of the stator dimension. This will be helpful to design the a.l.a. switched reluctance motor.

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Models and Simulation of the Switched Reluctance Motor Drive System

  • Hao Chen;Ahn, Jin-Woo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.2B no.4
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    • pp.201-206
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    • 2002
  • The paper presents the component parts and their models of the Switched Reluctance motor drive system with the angle position-current chopping control and with the fixed angle pulse width modulation control. The calculation of the parameters and the simulated models based on the MATLAB SIMULINK software package are introduced by a four-phase 816 structure prototype with the four-phase asymmetric bridge power converter. The simulation of the prototype in the course of starting is made by the simulated models at the different control strategies and the different given rotor speed.

Characteristics of a 4-phase Segment Type Switched Reluctance Motor

  • Higuchi, Tsuyoshi;Yamaguchi, Daiki;Abe, Takashi;Yokoi, Yuichi
    • Journal of international Conference on Electrical Machines and Systems
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    • v.3 no.3
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    • pp.235-240
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    • 2014
  • A novel segment type switched reluctance motor (SRM) as a rare-earth-less motor is proposed. The torque was increased by 40% and the radial force was decreased by 76% compared with the same size usual variable reluctance (VR) type SRM. Increasing the average torque, however, caused increasing torque ripple. In this paper we develop a 4-phase segment type SRM and show that the torque ripple can be decreased well.

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.