• Title, Summary, Keyword: Field oriented control

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Mover Field Oriented Control of Linear Permanent-Magnet Vernier Motor Considering Loss Minimization

  • Qiu, Xianqun;Zhao, Wenxiang;Chen, Qian;Xu, Dezhi
    • Journal of Electrical Engineering and Technology
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    • v.12 no.3
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    • pp.1114-1123
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    • 2017
  • A linear permanent-magnet vernier (LPMV) motor has magnets and windings in the short mover, which is very suitable for long stroke applications. This paper proposed a new field oriented control with space vector pulse width modulation for the LPMV motor, which considers loss minimization. First, the topology of the LPMV motor is briefly presented. Then, the mathematical model is derived, and the mover field oriented control strategy is proposed. Also, the loss analysis is performed. Finally, the simulated and experimental results are given, verifying the feasibility and effectiveness of the proposed control strategy.

A study on the Field Weakening Control of Induction Machine System for Parking Facilities (주차설비용 벡터제어 유도전동기 시스템의 약계자제어에 관한 연구)

  • Choi, Cheol;Lee, Sang-Hun;Kim, Byoung-Soo;Kim, Cheul-U
    • Proceedings of the KIEE Conference
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    • pp.1919-1921
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    • 1998
  • In this paper, a control method for field weakening region of induction machine drive which is based on indirect field oriented control was implemented. Also, application method of direct field oriented control in the field weakening region using maximum torque control methods which is adaptable for parking facilities was studied. The implemented method which is based on direct field oriented control method ensures the full utilization of the output torque capability of the machine over the conventional 1/${\omega}_r$ method. And machine drive system can obtain the robustness to motor parameter variation.

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Field Oriented Control of an Induction Motor in a Wide Speed Operating Region (벡터제어(制御) 유도전동기(誘導電動機)의 광역운전(廣域運轉))

  • Kim, Sang-Hoon
    • Journal of Industrial Technology
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    • v.17
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    • pp.79-85
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    • 1997
  • This paper describes a control for the high performance induction motor drive system with a wide speed operating range and proposes a robust control method independent of motor parameter variation. For the operation below the rated speed, the high performance control is achieved by using the indirect field-oriented control with a speed sensor. In the high speed regain, the field weakening region with a large variation in motor parameters, the motor drive system can obtain the robustness to motor parameter variation by switchover to the direct field-oriented control. Also, the sensorless speed control using estimated speed is achieved in very high speed region that the utilization of speed sensor pulses is limited. And from experiments using high performance 32bit DSP for 2.2[kW] and 22[kW] laboratory induction motor drive systems, it is verified that the proposed opration algorithm provided a good performance.

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An Adaptive Fuzzy Current Controller with Neural Network For Field-Oriented Controller Induction Machine

  • Lee, Kyu-Chan;Lee, Hahk-Sung;Cho, Kyu-Bock;Kim, Sung-Woo
    • Proceedings of the KIEE Conference
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    • pp.227-230
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    • 1993
  • Recently, the development of novel control methodology enables us to improve the performance of AC-machine drives by using pulse width modulation (PWM) technique. Usually, the dynamic characteristic of induction motor (IM) has been represented by the 5-th order nonlinear differential equation. This dynamics, however, can be reduced to 3-rd order dynamics by applying direct control of IM input current. This methodology concludes that it is much easier to control IM by means of the field-oriented methods employing the current controller. Therefore a precise current control is crucial to achieve a high control performance both in dynamic and steady state operations. This paper presents an adaptive fuzzy current controller with artificial neural network (ANN) for field-oriented controlled IM. This new control structure is able to adaptively minimize a current ripple while maintaining constant switching frequency. Especially the proposed controller employs neuro-computing philosophy as well as adaptive learning pattern recognizing principles with respect to variations of the system parameters. The proposed approach is applied to the IM drive system, and its performance is tested through various simulations. Simulation results show that the proposed system, compared among several known classical methods, has a superb performance.

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Novel Wavelet-Fuzzy Based Indirect Field Oriented Control of Induction Motor Drives

  • Febin Daya, J.L.;Subbiah, V.;Atif, Iqbal;Sanjeevikumar, Padmanaban
    • Journal of Power Electronics
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    • v.13 no.4
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    • pp.656-668
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    • 2013
  • This paper presents a wavelet-fuzzy based controller for indirect field oriented control of three-phase induction motor drives. The discrete wavelet transform is used to decompose the error between the actual speed and the command speed of the induction motor drive into different frequency components. The transformed error coefficients along with the scaling gains are used for generating the control component of the motor. Self-tuning fuzzy logic is used for online tuning of the scaling gains of the controller. The proposed controller has the ability to meet the speed tracking requirements in the closed loop system. The complete indirect field oriented control scheme incorporating the proposed wavelet-fuzzy based controller is investigated theoretically and simulated under various dynamic operating conditions. The simulation results are compared with a conventional proportional integral controller and a fuzzy based controller. The speed control scheme incorporating the proposed controller is implemented in real time using a digital processor control board. Simulation and experimental results validate the effectiveness of the proposed controller.

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
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    • pp.30-32
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    • 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.

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A Study on Position Control of a Current Source Inverter Fed Induction Motor by Field Oriented Control (자속 기준 제어에 의한 전류형 인버터 구동 유도전동기의 위치제어에 관한 연구)

  • 박민호;원충연;나승호
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.36 no.4
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    • pp.267-272
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    • 1987
  • In this paper, field oriented control is applied to a 16 bit micro-processor Mc68000 controlled CSI fed induction motor servo drive. The control of induction motor using the principle of its is able to have the transient performance nearly to that of DC motors in the position control. The software and hardware for the Mc68000 is developed. The position control scheme consists of the field oriented control loop and te speed reference pattern generator. The digital computer simlation and experimental results are provided, close agreement between them is obtained.

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Performance Evaluation of the Field-Oriented Control of Star-Connected 3-Phase Induction Motor Drives under Stator Winding Open-Circuit Faults

  • Jannati, Mohammad;Idris, Nik Rumzi Nik;Aziz, Mohd Junaidi Abdul
    • Journal of Power Electronics
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    • v.16 no.3
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    • pp.982-993
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    • 2016
  • A method for the fault-tolerant vector control of star-connected 3-phase Induction Motor (IM) drive systems based on Field-Oriented Control (FOC) is proposed in this paper. This method enables the control of a 3-phase IM in the presence of an open-phase failure in one of its phases without the need for control structure changes to the conventional FOC algorithm. The proposed drive system significantly reduces the speed and torque pulsations caused by an open-phase fault in the stator windings. The performance of the proposed method was verified using MATLAB (M-File) simulation as well experimental tests on a 1.5kW 3-phase IM drive system. This paper experimentally compares the operation of the proposed fault-tolerant vector controller and a conventional vector controller during open-phase fault.

H infinity controller design for induction motor with low speed (유도전동기의 저속운전을 위한 H infinity 제어기 설계)

  • Ban, Gi-Jong;Yoon, Kwang-Ho;Choi, Sung-Dai;Park, Jin-Soo;Nam, Moon-Hyon;Kim, Lark-Kyo
    • Proceedings of the KIEE Conference
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    • pp.696-698
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    • 2004
  • In this paper we design $H_{\infty}$ infinity controller for Induction motor with low speed operation. $H_{\infty}$ controller is applied in order to design a state feedback static controller for field oriented control of an induction motor. $H_{\infty}$ controller are linear plant can be set up using the same assumptions that are at the basis of field oriented control. Thus, $H_{\infty}$ control theory can be successfully used to set up a state feedback controller for field oriented control of an induction motor. The performances of the $H_{\infty}$ controller is numerically analysed and experimentally verified to prove the validity of the design procedure. In this paper show that performances with high robustness to variations of system parameter.

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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
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    • v.24 no.9
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    • pp.118-123
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    • 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.