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Analysis of Neural Network Approaches for Nonlinear Modeling of Switched Reluctance Motor Drive

  • Saravanan, P;Balaji, M;Balaji, Nagaraj K;Arumugam, R
    • Journal of Electrical Engineering and Technology
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    • v.12 no.4
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    • pp.1548-1555
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    • 2017
  • This paper attempts to employ and investigate neural based approaches as interpolation tools for modeling of Switched Reluctance Motor (SRM) drive. Precise modeling of SRM is essential to analyse the performance of control strategies for variable speed drive application. In this work the suitability of Generalized Regression Neural Network (GRNN) and Extreme Learning Machine (ELM) in addition to conventional neural network are explored for improving the modeling accuracy of SRM. The neural structures are trained with the data obtained by modeling of SRM using Finite Element Analysis (FEA) and the trained neural network is incorporated in the model of SRM drive. The results signify the modeling accuracy with GRNN model. The closed loop drive simulation is performed in MATLAB/Simulink environment and the closeness of the results in comparison with the experimental prototype validates the modeling approach.

Sensorless control of Switched Reluctance Motor for Electric AC Compressors of Electrical Vehicles (전기자동차 용 전동식 컴프레서를 위한 스위치드 릴럭턴스 모터의 센서리스 제어)

  • Jeon, Yong-Hee;Kim, Jaehyuck
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.28 no.10
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    • pp.37-42
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    • 2014
  • This paper discusses study of sensorless control of a variable speed switched reluctance motor (SRM) for electric AC compressors on electrical vehicles. A typical SRM drive requires a position sensor such as an encoder or hall sensor to measure the angular rotor position. However, harsh environment in electrical AC compressors for electric vehicles makes it difficult to use the position sensor in their motor drive system. Therefore, a sensorless control scheme for electric compressor motors utilizing magnetic characteristics of SRM with respect to position angle and phase current is proposed. The overall variable speed SRM drive with position sensorless control scheme has been modeled using Matlab/Simulink software and closed loop current control simulation is presented to validate the proposed sensorless drive control.

Torque Ripple Reduction Drive of Single-Phase SRM with High Power Factor (고역률 저토크 단상 SRM)

  • Kim Bong-Chul;Park Sung-Jun;Ahn Jin-Woo
    • Proceedings of the KIPE Conference
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    • 2004.07b
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    • pp.959-962
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    • 2004
  • A strategy for a torque ripple reduction drive of single-phase SRM with high power factor is proposed. The drive for switched reluctance motor (SRM) is presented to achieve sinusoidal, near unity power factor input current with low torque ripple. The proposed SRM drive has no additional active switch. And a single-stage approach, which combines a DC link capacitor used as do source and a drive used for driving the motor into one power stage, has a simple structure and low cost. The characteristics and validity of the proposed circuit is discussed in depth through the experimental results.

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SRM Drive System for EPS (EPS용 SR 구동시스템)

  • Kim Bong-Chul;Lee Dong-Hee;Ahn Jin-Woo
    • Proceedings of the KIPE Conference
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    • 2004.07b
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    • pp.914-917
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    • 2004
  • This paper presents a design and characteristics analysis of a SRM drive for EPS application. A rack mounted EPS system is considered in this paper. A conventional driving room space and mechanical structure are suggested in design stage. In the restricted design conditions, motor parameters are determined for sufficient torque and speed. For the smooth torque generation and simple circuit of power system, 12/8 motor drive is considered. With FEM and magnetic circuit analysis, designed motor is simulated to meet the requirement of specifications. Effectiveness of the suggested SRM drive for EPS application is verified by the manufactured prototype motor drive tests.

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Speed Control for PMSM in Elevator Drive System Using Fuzzy Controller (퍼지제어기를 이용한 엘리베이터 구동용 영구자석형 동기전동기의 속도제어)

  • Hwang S. M.;Yu J. S.;Won C. Y.;Kim K. S.;Choi S. W.
    • Proceedings of the KIPE Conference
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    • 2004.07b
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    • pp.655-659
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    • 2004
  • This paper proposes a fuzzy logic based vector control for the gearless traction machine drive systems using a permanent-magnet synchronous motor (PMSM). The performance of the proposed Fuzzy Logic Control(FLC)-based PMSM drive are investigated and compared to those obtained from the conventional PI controll-based drive system. We have confirmed theoretically and experimentally at different dynamic operating conditions such as step change in command speed, step change in load, etc. The comparative experimental results show that the FLC is more robust and, hence, found to be a suitable replacement of the conventional Pl controller for the high-performance elevator drive system.

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A Design of Position Control System of Switched Reluctance Motor (스위치드 릴럭턴스 전동기의 위치제어 시스템 설계)

  • Kim Min-Huei;Baik Won-Sik;Kim Nam-Hun;Choi Kyeong-Ho;Kim Dong-Hee
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.249-253
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    • 2004
  • This paper presents an implementation of position control system of Switched Reluctance Motor (SRM) using digital hysteresis controller. Although SRM possess several advantages including simple structure and high efficiency, the control drive system using power semiconductor device is required to drive this motor. The control drive system increases overall system cost. To overcome this problem and increase the application of SRM, it is needed to develope the servo drive system of SRM. So, the position control system of 1 Hp SRM is developed and evaluated by adaptive switching angle control. The position/speed response characteristics and voltage/current waveforms are presented to prove the capability of SRM for a servo drive application. Moreover, digital hysteresis current controller is developed and evaluated by experimental testing for the purpose of system developmental cost reduction.

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Drive System of 1.2kW SRM for Pallet Truck Application (Pallet Truck용 1.2kW급 SRM 구동시스템)

  • Lee Ju-Hyun;An Young-Joo;Ahn Jin-Woo
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.231-234
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    • 2004
  • This paper is to research about design and drive system of a switched reluctance motor for a pallet truck application. SRM is suitable for a pulse type source and is researched for home and industrial applications owing to the advance of power electronics technology. An SRM for a pallet truck drive is developed and tested. The drive system has to operate with low voltage and high current. The small size, robustness and high efficiency make it possible to replace with DC motor which is used in a pallet truck conventionally. Test results show that pallet truck with SRM has better drive characteristics than that of the DC motor.

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Vibration and Acoustics Noise Characteristic of SRM by Hybrid Excitation Method (SRM의 여자방식에 따른 진동 및 소음특성)

  • Hwang Hyung-Jin;Won Tae-Hyun;Ahn Jin-Woo
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.235-238
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    • 2004
  • 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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Design and Drive Characteristics of SRM for EPS Application (EPS용 SRM의 설계 및 운전특성)

  • 안진우;손익진;이동희
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.52 no.12
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    • pp.587-594
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    • 2003
  • This paper presents a design and characteristic analysis of an SRM drive for EPS(Electrically Power Steering) application. A rack mounted EPS system is considered in this paper. A conventional driving room space and mechanical structure are considered in a design stage. In the restricted design conditions, motor parameters are determined for sufficient torque and speed. For the smooth torque generation and simple circuit of power system, 12/8 motor drive is considered. With FEM and magnetic circuit analysis, designed motor is simulated to meet the requirement of specifications. Effectiveness of the suggested SRM drive for EPS application is studied by the drive tests of a prototype motor.

Programming Design for Operation of Proto-type In-core Neutron Detector Drive System (프로토 타입 원자로 중성자 검출기 구동시스템 구동프로그램 설계)

  • Kim, S.G.;Lee, E.W.;Shin, C.H.;Song, S.I.
    • Proceedings of the KIEE Conference
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    • 2001.07b
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    • pp.675-677
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    • 2001
  • The neutron controls a nuclear fission in the core of reactor. In-core neutron detector drive system is a equipment that drives detector and cable to survey neutron flux in the reactor. The program introduced by this paper governs proto-type drive system. The basic function of drive system is the insert and the withdraw of a cable, and the control of the movement speed. Also this program have a special function, test, auto operation, to increase the capacity of drive system.

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