• Title/Summary/Keyword: High Speed Motor

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Design of a Adaptive High-Gain Observer for Speed-Sensorless Control of DC Servo Motor (센서없는 직류서보전동기의 속도 제어를 위한 적응 고이득 관측기 설계)

  • 김상훈;김낙교
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.52 no.12
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    • pp.663-670
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    • 2003
  • This paper deals with speed control of DC servo motor using a Adaptive high gain obserber. In this parer, the gain of the observer is properly set up using the fuzzy control and adaptive high gain observer that have a superior transient characteristic and is easy to implement compared the existing method is designed. In order to verify the performance of the Adaptive high gain observer which is proposed in this paper, it is compared estimate performance of High-gain Observer and Adaptive High Gain Observer with the computer simulation. Effectiveness of the proposed high gain observer is proved from the experiment to compare the case with a speed sensor to the case with Adaptive high gain observer in the speed control of DC servo motor.

Analysis on the Core Loss and Windage Loss in Permanent Magnet Synchronous Motor for High-Speed Application (고속으로 운전되는 영구자석형 동기전동기의 철손 및 풍손 해석)

  • Jang, Seok-Myeong;Ko, Kyoung-Jin;Cho, Han-Wook
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.10
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    • pp.511-520
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    • 2006
  • Recently, more attention has been paid to the development of high-speed permanent magnet (PM) synchronous motors, since they are conductive to high efficiency, high power density, small size, and low weight. In high-speed PM machines, core loss and windage loss form a larger proportion of the total losses than usual in conventional mid- or low speed machines. This article deals with the analysis on the core loss and windage loss in PM synchronous motor for high-speed application. Using the data information from a manufacturer and non-linear curve fitting, this paper investigates the magnetic behavior and its core losses in the stator core using the electrical steels. And, the windage loss is calculated according to the variation of the rotational speed, motor inner pressure and temperature.

Characteristic of High Speed Synchronous Reluctance Motor(SynRM) (고속용 동기 릴럭턴스 전동기 특성)

  • Joo, S.W.;Hahn, S.C.;Koo, D.H.;Hong, J.P.
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.4
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    • pp.203-208
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    • 2006
  • This paper presents characteristics of SynRM(Synchronous Reluctance Motor) that is compared with a high speed induction motor. SynRM is much suitable for high speed electric machines because of structural robustness. There are many kinds of SynRM according to the shape of rotors. Particularly, axially laminated anisotropic (ALA) rotor is suitable for high speed instruments. Characteristics of SynRM with ALA rotor is obtained from a governing voltage and torque equation mainly composed of d-axis and q-axis inductance that will be identified with finite element method.

The Development of 150HP/ 70,000rpm Super High Speed Motor Driver for Direct Drive Method Turbo Compressor (직접 구동방식의 터보 압축기를 위한 150마력,70,000rpm 초고속 전동기 구동 시스템 개발)

  • 권정혁;변지섭;최종경
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.40 no.1
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    • pp.45-54
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    • 2003
  • Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently, the study of turbo compressor applied super high speed motor and drive, removing gearbox made its sire small and mechanical friction loss minimum. This paper describes the implementation of the vector control schemes for a variable-speed 131㎾ PMSM(Permanent Magnet Synchronous Motor) drive in super-high speed application.

Microprocessor Based Sensorless Speed Control of Permanent Magnet Synchronous Motor (마이크로프로세서를 이용한 영구자석 동기전동기의 센서리스 속도제어)

  • 최재영;김성환;권영안
    • Journal of Advanced Marine Engineering and Technology
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    • v.20 no.3
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    • pp.121-130
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    • 1996
  • Permanent magnet synchronous motor is widely used in industrial drive applications due to high efficiency, high power ratio, and easy maintenance. Position and speed detectors required in this motor increase the drive cost, and reduce the application range. Some papers present the speed control without position and speed detectors using DSP characterized by high processing performance. However, DSP increases the cost, and makes the inplementation difficult. This study has performed the speed control without position and speed detector by means of the microprocessor system which can be easily accessed. The results of simulation and experiment showed comparatively good dynamics in spite of the sensorless system.

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A Study on the Speed Control of BLDC Motor Using the Feedforward Compensation (전향보상을 이용한 BLDC 모터의 속도제어에 관한 연구)

  • Park K.H.;Kim T.S.;Kim K.H.;Hyun D.S.
    • Proceedings of the KIPE Conference
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    • 2003.07b
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    • pp.663-666
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    • 2003
  • This paper presents a speed controller method based on the disturbance torque observer of high performance brushless DC (BLDC) motor drives. In case of the speed control of robot arms and tracking applications with lower stiffness, we cannot design the speed controller gain to be very large from tile viewpoint of the system stability. Thus, the feedforward compensator using disturbance torque observer was proposed. This method can improve the speed characteristic without increasing the speed controller gain. The enhanced speed control performance can be achieved and the speed response against the disturbance torque can be Improved for high-performance BLDC motor drive systems in which the bandwidth of tile speed controller cannot be made large enough. Consequently, speed control for high-performance BLDC motor drives become improved. The simulation results for BLDC motor drive systems confirm the validity of the proposed method.

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Unbalance Response Analysis of Copper Die Casting High Speed Induction Motor (동 다이캐스팅 고속 유도전동기의 불평형 응답 해석)

  • Hong, Do-Kwan;Jung, Seung-Wook;Woo, Byung-Chul;Koo, Dae-Hyun;Ahn, Chan-Woo
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.22 no.7
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    • pp.642-649
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    • 2012
  • This paper deals with a copper die casting induction motor which has several advantages of motor performance. The developed motor is used as spindle motor in machining center. The dynamic characteristic analysis of rotor is dealt with for precision machining. The critical speed of rotor considering rotation and gyroscopic effect should be above operating speed, 18,000 rpm, and have a 201 % sufficient separation margin. Also, the 3-D unbalance vibration response analysis is performed and enabled the prediction of the expected vibration amplitude by unbalance in high speed. The unbalance vibration responses of each position on the rotor are satisfied with allowable vibration displacement of API 611 standard according to balancing G grade(G 0.4, G 2.5, G 6.3). Copper die casting high speed induction motor is successfully developed and verified by experiment.

A Study on the Development of High-Speed Control Algorithm for the trapezoidal Brushless DC Motor (구형파 브러시리스 직류 전동기의 고속 운전 제어 알고리즘 개발에 관한 연구)

  • Choi Jae-Hyuk;Jang Hoon;Kim Jong-Sun;Yoo Ji-Yoon;Song Myung-Hyun;Lee Young-Sun
    • Proceedings of the KIPE Conference
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    • 2002.07a
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    • pp.435-438
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    • 2002
  • The Objects of this paper are developing and also improving a high-speed driving system of bushless DC motor(BLDCM) with economical and practical performance. Because BLDC motors are manufactured that each motor can create proper torque for their individual purpose, it is difficult to increase over the rated speed when a motor speed (with it's rated road) is reaching to a maximum speed so the motor torque cannot be increased. This paper verifies the effects of Leading Angle Algorithm, that is proposed on this paper, with examining existing methods to maximize the torque of a motor in high-speed driving area. The arithmetic processor for this experiment is TMS320C240 DSP controller that is designed for a special purpose of motor control in Texis Instrument Inc., and the used Inverter is PM10CSJ060, a Intelligent Power Module of Mitsubishi Corporation.

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The speed control system of an induction type a.c servo motor by vector control (벡터제어법에 의한 유도형교류 서보전동기의 속도제어에 관한 연구)

  • 홍순일;노창주
    • Journal of Advanced Marine Engineering and Technology
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    • v.13 no.3
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    • pp.56-63
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    • 1989
  • In recent years, a.c servo motors have been gradually replacing d.c sevo motors in various high-performance demanded aplications such as machine tools and industrial robots. In particular, the high-performance slip-frequency control of an induction motor, which is often called the vector control, is considered one of the best a.c drive. In this paper, the transient state equation and vector control algrithms of an induction motor are described mathematically by using the two-axis theory(d-q coordinates). According to the result of these algorithms, we scheme the speed control system for an induction type ac servo motor in which vector control is adopted to give tha a.c motor high performance. Motor drive is a PWM inverter using power MOS-FET, and is controlled in order to let the actual input current of the motor track the current reference obtained from a microcomputer(8086 cpu). Driving experiments are performed in the range of 0 to 3000 rpm, and it is verified that high speed response is possible.

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Development of the linear motor driver with high speed and stiffness based on SERCOS (SERCOS 기반의 고속 고강성 이송시스템 드라이버 개발)

  • 최정원;김상은;이기동;박정일;이석규
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.10a
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    • pp.64-68
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    • 1997
  • In this paper, a controller for the linear motor with high speed and stiffness is implemented using SERCOS interface which is a real time communication protocol between the numerical controller(NC) and the motor driver. The proposed controller is mainly composed of current, speed, and position controller, which are designed using the 32-bit DSP(TMS320C31), a high-integrated logic device (EPM7128), and Intelligent Power Module(IPM) to enhance reliability and compactness of the system. The experimental results show the effective performance of the proposed controller for he linear motor with high speed and stiffness.

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