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Modified sensorless vector control system of IM based on flux observer

Journal of Harbin Institute of Technology(New Series) 2007年第6期14卷 880-883页

作者：邹积勇许镇琳孙凯 School of Electrical and Automation Engineering Tianjin University

This paper presents a speed sensorless vector control system for induction machine (IM),which is based on a flux observer. According to vector control theory of IM,the q-axis rotor flux converging on zero is utilized for speed estimation. Additionally this system solved the online identification of stator resistance by d-axis flux error. The advantages of the proposed system are simplicity and avoidance of the problems caused by only using a voltage model. The effectiveness of the proposed system has been verified by simulation and experimentation.

关键词： induction machine sensorless vector control flux observer speed estimation

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NOVEL sensorless vector control SYSTEM OF INDUCTION MACHINE BASED ON FLUX OBSERVER IN FIELD WEAKENING

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Transactions of Tianjin University 2006年第1期12卷 1-5页

作者：邹积勇许镇琳孙凯 SCHOOL OF ELECTRICAL ENGINEERING AND AUTOMATION TIANJIN UNIVERSITY TIANJIN 300072CHINA

A speed-sensorless vector control system for induction machines （IMs）is presented, According to the vector control theory of IMs, the rotor flux is estimated based on a flux observer,and the speed is estimated through the method of q-axis rotor flux converging on zero with proportional integral regulator, A 0.75 kW,50 Hz,two-pole induction machine was used in the simulation and experimental verification, The simulation model was constructed in Matlab. A series of tests were performed in the field weakening region, for both no-load and loaded operation. The estimated speed tracks the actual speed well in the based speed region and field weakening region （ 1 per unit value to 4 per unit value）. The small estimation error of residual speed is due to the existence of slip.

关键词： induction machines (IMs) sensorless vector control flux observer speed estimation

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维普期刊数据库

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A sensorless vector control Induction Motor Drive Based on ADRC and Flux Observer

A Sensorless Vector Control Induction Motor Drive Based on A...

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2009中国控制与决策会议

作者： Liying Liu~(1,2),Zhenlin Xu~1,Qiang Mei~1 1.School of Electrical and Automation Engineering,Tianjin University,Tianjin 300072,China 2.School of Automatic and Electrical Engineering,Tianjin University of Technology and Education,Tianjin 300222,China

＜正＞This paper presented a novel speed sensorless vector control system of induction motor using the active disturbance rejection controller（ADRC） with a flux *** controller is not overly dependent on the accurate mathematical model of motor,so the system is inherently robust,and it can estimate and compensate the general disturbance that includes the unknown internal dynamics and the external disturbance,so the rotor flux decouples with torque completely.A simple flux observer is used to observe rotor flux,then according to vector control theory of induction motor,we utilize the q-axis rotor flux converging to zero for speed *** results verified the validity and feasibility.

关键词： Induction Motor sensorless vector control ADRC Flux Observer Speed Estimation Robustness

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Realization of sensorless vector control System Based on MRAS with DSP

Realization of Sensorless Vector Control System Based on MRA...

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第二十七届中国控制会议

作者： Huang Yushui,Liu Dan Department of Electrical and Automatic Engineering,Nanchang University,Nanchang 330031,P.R.China

sensorless vector control of an induction motor drive essentially means vector control without any speed *** is possible to estimate the speed signal from machine terminal voltages and currents with the help of a *** vector controlled drives are commercially available at this time.A sensorless vector control system based on model referencing adaptive system（MRAS） is *** calculation model of rotor flux was *** sensorless vector control system was realized based on the chip of *** simulation and test result verified that the method of sensorless vector control is feasible and valid.

关键词： MRAS sensorless vector control Speed estimation

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Rotor Speed Estimation Using Zero-Crossing Times Signal of Stator Current

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第二十六届中国控制会议

作者： Ghanbarian M.M. Mohammadi A. Kavehnia F. Keivani H. Askari M.R. Mohammadi S. Islamic Azad University

ISBN: (纸本)7900719229;9787900719225

The purpose of this study is to illustrate a new method for sensorless vector control of induction *** approach uses Zero-Crossing Times（ZCT）signal of stator current to estimate rotor *** signal contains useful information which can be used for estimation of rotor speed and *** have used this information for online estimation of rotor *** avoid time consuming Fast Fourier Transformation（FFT）analysis of ZCT signal,we have used switchable high order Butterworth Filters in order to extract rotor *** result has expressed good performance of this simple and inexpensive sensorless vector control of induction motors.

关键词： sensorless vector control Zero-Crossing Time Speed Estimation Induction Motor.

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