• Title/Summary/Keyword: Stator flux oriented

Search Result 65, Processing Time 0.032 seconds

Induction motor sensor less speed control by stator flux oriented method (고정자 자속 기준 제어 방식에 의한 속도검출기 없는 유도전동기 속도 제어 시스템)

  • Park, Min-Ho;Kim, Kyoung-Seo;Kim, Heui-Wook
    • Proceedings of the KIEE Conference
    • /
    • 1989.11a
    • /
    • pp.268-272
    • /
    • 1989
  • To avoid the use of position sensor or flux sensor in a field oriented induction machine drive system, the terminal quantities are often used to estimate the rotor flux. Since the estimation involves the leakage inductance of the machine, the performance of such systems is sensitive to the variations of leakage. Since estimation of the stator flux is independent of the leakage, the steady state performance of the stator flux oriented system is insensitive to the leakage inductance. In this paper, the torque response of stator flux oriented system is compared to that of rotor flux oriented system by digital simulation. And induction motor sensor less speed control by stator flux oriented method is developed. The performance of the speed estimation is showed by digital simulation.

  • PDF

Analysis on Parameter Detuning of Induction Motor Drives in Field Weakening Region (약계자영역에서 유도전동기 고정자자속기준제어의 파라미터 비동조 영향 분석)

  • Shin, Myoung-Ho
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.24 no.9
    • /
    • pp.118-123
    • /
    • 2010
  • The selection of flux level in the maximum torque control of stator flux-oriented induction motor drives in the field weakening region is dependent on stator resistance and inductances. This paper presents parameter detuning effects of stator flux-oriented control drives in the field weakening region. The detuning effects of stator resistance and rotor leakage inductance are analyzed. The decrease of torque and the flux control lost by the detuning of inductance are shown in the simulation results.

Voltage Control Strategy for Maximum Torque Operation of Stator-Flux-Oriented Induction Machine Drive in the Field-Weakening Region (약계자 영역에서 유도 전동기의 고정자 자속 기준 최대 토크 운전을 위한 전압 제어 기법)

  • Kim, H.J.;Yu, J.S.;Won, C.Y.;Kim, E.J.;Jo, H.K.;Kim, S.H.
    • Proceedings of the KIPE Conference
    • /
    • 2005.07a
    • /
    • pp.30-32
    • /
    • 2005
  • In this paper, voltage control strategy for maximum torque operation of stator flux-oriented induction machine drive in the field-weakening region is proposed. In a conventional stator flux-oriented (SFO) induction machine drive system of the maximum torque capability cannot be obtained. The field-weakening method is used to vary the stator-flux reference in proportion to the inverse of the rotor speed. The proposed algorithm, based on the voltage control strategy, ensures the maximum torque operation over the field-weakening region. The proposed algorithm, voltage control strategy for maximum torque operation of capability, which is insensitive to the variation of machine parameters In the field-weakening region. The proposed algorithm is verified by simulation.

  • PDF

Technique to Solve Problems Due to Load Increment in Maximum Efficiency Control of Stator Flux-Oriented Induction Motor Drive (유도전동기 고정자자속 기준제어의 최대효율제어에서 부하증가로 인한 문제 해결방법)

  • Shin, Myoung-Ho
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.21 no.3
    • /
    • pp.69-74
    • /
    • 2007
  • Flux level is low in the maximum efficiency control of a stator flux-oriented control of induction motor under the light load. In this cast if the loaf torque is suddenly increased, torque component current is limited to the low level by torque-limit condition because of the low flux level. In this paper, a technique to solve the problem is proposed.

Analysis on Parameter Detuning of Induction Motor Drives in Constant Torque Region (일정토크영역에서 유도전동기 고정자자속기준제어의 파라미터 비동조 영향 분석)

  • Shin, Myoung-Ho
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.26 no.11
    • /
    • pp.81-86
    • /
    • 2012
  • It is well known that the stator-flux-oriented induction motor drives are not dependent on parameter detuning in constant torque region except low speed range. This paper presents parameter detuning effects of stator-flux-oriented induction motor drives in constant torque region. The detuning effects of stator resistance, rotor resistance and rotor leakage inductance are analyzed.

Maximum Efficiency Control of a Stator Flux-Oriented Induction Motor Drive (유도전동기 고정자자속 기준제어의 최대효율제어)

  • Shin, Myoung-Ho
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.20 no.4
    • /
    • pp.117-122
    • /
    • 2006
  • Maximum efficiency control scheme in a stator flux-oriented induction motor drive is proposed for minimizing input dc power. Flux level is decreased in steps for searching the minimum input dc power. In addition, Torque equation, slip angular frequency, and decoupling compensation current considering iron loss resistance is used. Simulation and experimental results verify the effectiveness of the proposed method.

Selection of Optimal Stator Flux Reference of Stator Flux-Oriented Induction Machine Drive in Field Weakening Region (약계자영역에서 유도전동기의 고정자자속 기준 제어를 위한 최적 기준자속 선정방법)

  • Sin, Myeong-Ho;Hyeon, Dong-Seok;Jo, Sun-Bong
    • The Transactions of the Korean Institute of Electrical Engineers B
    • /
    • v.49 no.7
    • /
    • pp.494-499
    • /
    • 2000
  • In a conventional stator flux-oriented(SFO) induction machine drive system, the field weakening method is to vary flux reference in proportion to the inverse of the rotor speed. This paper investigates that maximum torque capability cannot be obtained in the conventional system and proposes a new selection method of flux reference to obtain maximum torque capability over the field weakening region by considering voltage, torque, and current limits.

  • PDF

Stator Flux Oriented Sensorless Vector Control with Phase/Gain Compensated LPF for Induction Motor (유도전동기를 위한 위상/이득 보상 LPF를 가지는 고정자 자속 기준 센서리스 벡터 제어)

  • Park Seung-Yub;Kim Sam-Young
    • The Transactions of the Korean Institute of Electrical Engineers B
    • /
    • v.54 no.4
    • /
    • pp.201-207
    • /
    • 2005
  • This paper has investigated the sensorless vector control method of induction motor based on the stator flux oriented voltage equation and the digital low pass filter (LPF) with compensator of phase/gain. The Proposed vector control method is easy to decide the stator reference voltages and control of motor, since it is based on stator flux vector But this method has sensitive structure to excessive sensor noise and PWM pulsating components of stator currents because the measured stator currents are directly used to compensate the internal resistive voltage drop at the determination of stator reference voltages. To eliminate the noise sensitive of proposed vector drive, this paper propose the digital LPF with compensator of phase/gain base on orthogonal property of stator current vector in stationary $\alpha$, $\beta$ reference frame. The proposed methods have been simulated and implemented on a sensorless vector drive for 750W three-phase induction motor. The simulation and experimental results demonstrate effectiveness of the proposed methods.

Speed Sensorless Vector Control of a Linear Induction Motor using Stator-Flux Oriented Control Scheme (고정자 자속 기준 제어 기법을 이용한 선형 유도 전동기의 속도 센서리스 벡터제어)

  • 오성철
    • Proceedings of the KIPE Conference
    • /
    • 2000.07a
    • /
    • pp.596-599
    • /
    • 2000
  • 벡터 제어이론은 교류전동기의 토오크와 자속을 독립적으로 제어할 수 있는 특징이 있으므로 토오크 제어를 주로 하는 견인용 전동기의 제어에 적용하기 위한 연구가 활발히 수행되어 왔다 그러나 선형 유도전동기 구동에는 아직 널리 사용되지 않은 실정이다 벡터 제어이론은 일반적으로 회전자자속 기준제어(Rotor flux oriented control)을 의미하며 이를 구현하기 위한 방법은 자속을 직접 측정 혹은 연산하는 직접제어 방식과 속도를 측정하여 슬립주파수 명령을 제어하는 간접방식으로 분류된다. 최근에는 기존의 회전자자속 기준방식뿐만 아니라 고정자자속(Stator flux oriented) 공극자속(Air gap flux oriented) 기준 방식등이 제안되고 있다. 본연구에서는 자기부상열차의 추진용 선형 유도 전동기의 추진에 가장 적합하다고 생각되는 고정자자속 기준벡터제어 방식과 이를 구현하기 위한 고정자 자속을 추정하는 방법에 대하여 설명한다. 또한 속도제어를 위한 속도 추정방식도 안내코일 등 부장치 없이 전동기 파라미터로 추정할 수 있는 기법에 대하여 논한다.

  • PDF

Stator Flux-Oriented Control of Induction Motor Considering Iron-Loss (철손을 고려한 유도전동기의 고정자 자속기준 벡터제어)

  • 위성돈;신명호;현동석
    • The Transactions of the Korean Institute of Power Electronics
    • /
    • v.5 no.2
    • /
    • pp.149-153
    • /
    • 2000
  • Recently, some works to consider the influences of iron loss have been made in vector control of induction m motor. This paper investigates the effects of iron loss in stator flux-oriented system, and presents the control a algorithm to consider iron loss. The iron loss is modeled by equivalent iron loss resistance in parallel to m magnetizing inductance. The proposed method is verified by simulation and experimental results.

  • PDF