The Experts below are selected from a list of 18438 Experts worldwide ranked by ideXlab platform

Yuan Ren - One of the best experts on this subject based on the ideXlab platform.

  • reduction of emi with chaotic space vector modulation in Direct Torque Control
    IEEE Transactions on Power Electronics, 2017
    Co-Authors: Atheer H Abosh, Z Q Zhu, Yuan Ren
    Abstract:

    In this paper a study is presented about the reduction of electromagnetic interference (EMI) in Direct Torque Control (DTC) method by the means of chaotic space vector modulation. Space Vector Modulated Direct Torque Control (SV-DTC) is a method developed to reduce current and moment fluctuations which stem from the hysteresis Controllers used in classical DTC method. The switching frequency amplitude was changed chaotically in a Space Vector Modulated Direct Torque Control (FFSV-DTC) having a Fixed switching frequency, and Chaotic Space Vector Modulated Direct Torque Control (CAFSV-DTC) method having chaotic amplitude modulated switching frequency was obtained. CAFSV-DTC method was suggested to reduce EMI, acoustic noise and current harmonics which occur in FFSV-DTC method. For this purpose, the proposed CAFSV-DTC method, using a Permanent Magnet Synchronous Motor (PMSM) drive, is compared to Random Amplitude Frequency method (RSV-DTC) and FFSV-DTC. Simulation results indicate that the proposed method yields better results. DOI: http://dx.doi.org/10.5755/j01.eee.22.1.14097

Chenhu Yuan - One of the best experts on this subject based on the ideXlab platform.

  • PMSM speed sensorless Direct Torque Control based on EKF
    2009 4th IEEE Conference on Industrial Electronics and Applications, 2009
    Co-Authors: Yingpei Liu, Jianru Wan, Hong Shen, Chenhu Yuan
    Abstract:

    System with mechanical speed sensor has lower reliability and higher cost. Traditional Direct Torque Control method has disadvantages of big ripples on current and flux linkage and Torque. To solve these problems, the Extended Kalman Filter is established to estimate both stator flux linkage and rotor speed. Therefore, speed sensorless Direct Torque Control for surface permanent magnet synchronous motor is realized. Simulation results have shown that the advantage of Direct Torque Control method such as rapid Torque response is maintained, at the same time, the system based on EKF is robust to motor parameters and load disturbance. The dynamic and static performances are dramatically improved.

Zhang Shan-liang - One of the best experts on this subject based on the ideXlab platform.

  • Modeling and Simulation of Asynchronous Moter Low-Speed Direct Torque Control
    Computer Simulation, 2011
    Co-Authors: Zhang Shan-liang
    Abstract:

    The paper studied low-speed Torque Control of a motor problem.Aiming at the problem that the Direct Torque Control has poor low-speed response performance,we presented a UI-based model of the stator flux observer and compensation for the new way to improve the low-speed performance.Power system module of simulation toolbox in Matlab was used to establish a Direct Torque Control system simulation model.The simulation results show that the Direct Torque Control system for low-speed performance can be improved significantly.

Liu Guo-rong - One of the best experts on this subject based on the ideXlab platform.

  • Direct Torque Control System Based on Neural Network Restructuring Model
    Microcomputer Information, 2009
    Co-Authors: Liu Guo-rong, Li Chun-j
    Abstract:

    The Direct Torque Control is a novel high-powered AC frequency Control techniques after the converter technique based on the vector Control.Aiming at the problems of great current and Torque ripple of the asynchronous motor based on Direct Torque Control when it is running at low-speed.This paper uses neural-network to restructuring stator flux observer and status selector model in Direct Torque Control system.And uses the individual training neural-network to cope with the complex calculations.The simulating result shows that the system using the neural-network have good dynamic performance and efficiently improve the low-speed performance of Direct Torque Control system.

  • Direct Torque Control System Based on Neural Network Restructuring Model
    2009
    Co-Authors: Liu Guo-rong
    Abstract:

    The Direct Torque Control is a novel high-powered AC frequency Control technique following the converter technique based on the vector Control.To solve the problems of high current and Torque ripple of asynchronous motors based on Direct Torque Control when they are running at low speed,this paper uses neural-network in Direct Torque Control system to restructure stator flux observer and status selector model.And the individual training neural-network was utilized to cope with the complex calculations.The experimental result shows that the system with neural-network has a good dynamic performance and efficiently improves the low-speed performance of Direct Torque Control system.

Atheer H Abosh - One of the best experts on this subject based on the ideXlab platform.

  • reduction of emi with chaotic space vector modulation in Direct Torque Control
    IEEE Transactions on Power Electronics, 2017
    Co-Authors: Atheer H Abosh, Z Q Zhu, Yuan Ren
    Abstract:

    In this paper a study is presented about the reduction of electromagnetic interference (EMI) in Direct Torque Control (DTC) method by the means of chaotic space vector modulation. Space Vector Modulated Direct Torque Control (SV-DTC) is a method developed to reduce current and moment fluctuations which stem from the hysteresis Controllers used in classical DTC method. The switching frequency amplitude was changed chaotically in a Space Vector Modulated Direct Torque Control (FFSV-DTC) having a Fixed switching frequency, and Chaotic Space Vector Modulated Direct Torque Control (CAFSV-DTC) method having chaotic amplitude modulated switching frequency was obtained. CAFSV-DTC method was suggested to reduce EMI, acoustic noise and current harmonics which occur in FFSV-DTC method. For this purpose, the proposed CAFSV-DTC method, using a Permanent Magnet Synchronous Motor (PMSM) drive, is compared to Random Amplitude Frequency method (RSV-DTC) and FFSV-DTC. Simulation results indicate that the proposed method yields better results. DOI: http://dx.doi.org/10.5755/j01.eee.22.1.14097