• Title/Summary/Keyword: PM Motor

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Fuzzy Logic Speed Control of a Surface-Mounted Permanent Magnet Synchronous Motor (표면 부착형 영구자석 동기전동기의 퍼지 속도제어)

  • Jung, Jin-Woo;Choi, Young-Sik;Yu, Dong-Young
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.184-192
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    • 2010
  • This paper proposes a new fuzzy speed controller to precisely regulate the speed of a surface-mounted permanent magnet synchronous motor(SPMSM). The proposed fuzzy controller needs the knowledge of the load torque to realize its robust and accurate control, thus the first-order load torque observer is adopted to estimate it. It is analytically confirmed that the overall control system containing the fuzzy speed controller and the load torque observer is exponentially stable. To prove the validity of the proposed fuzzy speed controller, the simulation and experimental results are shown. It is concluded that the proposed control scheme can be employed to accurately control the speed of a SPMSM motor.

Speed Control of Permanent Magnet Synchronous Motors using an Adaptive Controller (적응제어기를 이용한 영구자석 동기전동기의 속도 제어)

  • Jung, Jin-Woo;Kim, Tae-Heoung
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.5
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    • pp.977-983
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    • 2011
  • This paper proposes a new adaptive speed controller to achieve a robust speed control of a permanent magnet synchronous motor(PMSM). The proposed adaptive regulator does not require any information on the motor parameter and load torque values, so it is very insensitive to model parameter and load torque variations. Also, the stability of the proposed adaptive control system is proven. To validate the robustness of the proposed adaptive speed controller, both simulation and experimental results are provided under motor parameter and load torque variations. It is clearly demonstrated that the proposed adaptive regulator can accurately control the speed of permanent magnet synchronous motors.

Nonlinear Speed Control of PM Synchronous Motor with Extended Kalman Filter Observer

  • Vu, Nga Thi-Thuy;Jung, Jin-Woo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.25 no.3
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    • pp.15-23
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    • 2011
  • This paper proposes a nonlinear speed controller for a permanent magnet synchronous motor (PMSM). In this paper, the load torque is estimated by an extended Kalman filter (EKF) observer because the proposed controller needs its knowledge. To confirm the effectiveness of the proposed control scheme, simulations and experiments are performed under motor parameter variations with a prototype PMSM drive system.

Self-Shielding Magnetized vs. Shaped Parallel-Magnetized PM Brushless AC Motors

  • Pang Y.;Zhu Z. Q.;Howe D.
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.5B no.1
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    • pp.13-19
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    • 2005
  • The performance of two designs of permanent magnet brushless motor, by having self-shielding magnetized magnets or sinusoidally shaped parallel-magnetized magnets with essentially sinusoidal airgap flux distributions, are compared. It is shown that the parallel-magnetized motor with shaped sintered NdFeB magnets can result in a higher airgap flux density and torque density than that of a self-shielding magnetized motor equipped with an anisotropic injection moulded NdFeB ring magnet.

AC Servo Motor Control Using Software PWM (Software PWM을 이용한 AC Servo Motor 제어기의 구현)

  • Hong, Ki-Chul;Nam, Kwang-Hee
    • Proceedings of the KIEE Conference
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    • 1992.07a
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    • pp.245-247
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    • 1992
  • We utilize as a processor TMS320C25 (Texas Instrument) in making a driver for a 4 pole PM synchronous servo motor. TMS320C25 has a 32bit ALU and a 16 bit hardware multiplier, and the maximum instruction execution rate is 10MIPS at 40MHz. We adopted a space vector modulation PWM method. An interesting point of this work is that PWM wave is generated by utilizing timer interrupts. Hence, in the rest of time the processor can take care of the other routine such as Park's coordinate transformation and the computation required in the feedback loops. Thus, it mates the hardware circuit very simple. Due to the decrease in the number of components, the motor drive system becomes more fault-tolerant and cost-optimized. Also, more flexibility is gained in changing the control parameters.

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Design and Analysis of linear motor for slim-line ODD (소형 ODD용 선형 구동기의 설계 및 특성 해석)

  • Shim, Min-Taek;Park, Joon-Hyuk;Baek, Yoon-Su
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11a
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    • pp.378.2-378
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    • 2002
  • This paper deals with a moving coil type linear motor for fast access of the miniature ODD. This slim-line motor is composed of the mover supported by guide mechanism, the coil wound into it, and the yoke attached to the permanent magnet for stator. The driving force is generated by the PM of the stator and the current in the coil of the mover. Magnetic circuit analysis and Finite Element Method are applied to estimate force at air gap. (omitted)

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A Study on Ripple Reduction of BLDC Motor using TMS320F240 (TMS320F240을 이용한 BLDC 전동기의 리플저감에 대한 연구)

  • Roh, Kwang-Ho;Kim, Yong;Lee, Seung-Il;Cho, Gyu-Man;Lee, Kyu-Hun
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2000.11a
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    • pp.219-224
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    • 2000
  • This paper presents a ripple reduction of BLDC motor using TMS320F240. A fault of permanent magnet(PM) BLDC motor possible to miniaturization and high-output is to be difficult to reduce speed-ripple at low speed region. An existing solution is to be use of PWM waveform by PI control with computing control angle of 60$^{\circ}$. The new family of DSP controllers provides a single chip solution by integrating on-chip not only a high computational power but also, all the peripherals necessary for electric motor control. This paper gives an advanced solution of the SVPWM technique for the purpose of reducing control angel rather than 60$^{\circ}$. This technique gives an excellent speed ripple characteristic.

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Motor Protection and Control with Digital Protective Relays (디지털 보호 계전기를 이용한 모터 보호 및 제어)

  • 이성환;안인석
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.178-178
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    • 2000
  • In this paper, intelligent methods using digital protection relay in power management and control system is developed in order to protect power systems by means of timely fault detection during operation and control at starting for induction motor which have various load environments and capacities in power systems. The digital protective relay was designed with DSP CPU(TMS320C31) to Protect and measure more quickly and precisely. The test result on the basis of KEMCl120 and IEC60255, show that the operation time error of the digital motor protection relay is improved within $\pm$5%. Also, we can control motors at starting according to starting types with simple method as programmable sequence editor. So we can improve the demerits of high cost and much manhour for rework.

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Soft Switching Inverter with An Auxiliary Active Quasi-Resonant DC Link Snubber for AC Servo Motor Drive

  • Mun, Sang-Pil;Kim, Chil-Ryong;Lee, Jong-Kurl;Park, Man-Kyu;Kwon, Soon-Kurl
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.3
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    • pp.79-87
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    • 2008
  • This paper presents a simple circuit topology of the auxiliary active quasi-resonant DC link snubber-assisted three phase voltage source soft-switching inverter for small scale PM motor drive applications. The pulse processing drive circuit interface and its soft-switching operation are discussed from an experimental point of view. Moreover, its conductive noise is measured and evaluated for electrical AC servo motor drive as compared with that of the conventional hard switching inverter.

Sensorless Control Technique using Third Harmonics Voltage Component of PM Brushless DC Motor (브러시리스 직류전동기의 3고조파 전압성분을 이용한 센서리스 제어기법)

  • Park, Sang-Hoon;Yoon, Yong-Ho;Lee, Seung-Jun;Won, Chung-Yuen;Kim, Young-Real
    • Proceedings of the KIPE Conference
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    • 2005.07a
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    • pp.27-29
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    • 2005
  • This paper studies particularly applicable method for sensorless Permanent Magnet Brushless DC(PMBLDC) Motor drive system. The waveform of the motor internal voltages (or back emf) contains a fundamental and higher order frequency harmonics. Therefore the third harmonics. component is extracted from the stator phase voltage. The resulting third harmonic signal keeps a constant phase relationship with the rotor flux for any motor speed and load condition. In addition, a simple starting method and a speed estimation approach are also proposed.

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