A novel on-line MRAS scheme of rotor resistance identification using rotor flux in synchronous reference frame for induction motor

2015 ◽  
Author(s):  
Seung-Myung Lee ◽  
Shin-Won Kang ◽  
Rae-Young Kim
Keyword(s):  
Induction Motor ◽  
Reference Frame ◽  
Rotor Resistance ◽  
Synchronous Reference Frame ◽  
Rotor Flux ◽  
On Line

Model of Vector Controlled Induction Drive

2009 ◽  
Vol 147-149 ◽  
pp. 149-154
Author(s):  
Roma Rinkeviciene ◽  
Andrius Petrovas
Keyword(s):  
Induction Motor ◽  
Reference Frame ◽  
Real Variable ◽  
Flux Linkage ◽  
Current Channel ◽  
Stator Current ◽  
Synchronous Reference Frame ◽  
Rotor Flux ◽  
Drive Model ◽  
Motor Model

The paper presents the model of vector controlled induction motor. Induction motor model is carried out in reference frame, fixed on stator. Elaborated model of the drive is suitable for investigation dynamics because output signals appear as real currents, flux linkages and other variables. Vector control law model is implemented for variables in synchronous reference frame; therefore controller operates with transformed variables. Structure of designed model reflects the real variable speed drive. Model of vector controlled induction drive comprise model of induction motor, feedback signals and blocks as well as speed and flux reference blocks and controllers for producing motor supply signals. Feedback blocks are used for calculation stator current vector in the rotor flux linkage reference frame. For flux and speed control are designed lag controllers. Between advantages of that model is additional simulation of current channel law.

scholarly journals Robust linear parameter varying induction motor control with polytopic models

2013 ◽  
Vol 10 (2) ◽  
pp. 335-348 ◽  
Author(s):  
Khamari Dalila ◽  
Makouf Abdessalem ◽  
Drid Said ◽  
Larbi Chrifi-Alaoui
Keyword(s):  
Induction Motor ◽  
Feedback Controller ◽  
Linear Matrix ◽  
Linear Parameter ◽  
Linear Parameter Varying ◽  
Flux Observer ◽  
Rotor Resistance ◽  
Rotor Flux ◽  
On Line ◽  
Parameter Varying

This paper deals with a robust controller for an induction motor which is represented as a linear parameter varying systems. To do so linear matrix inequality (LMI) based approach and robust Lyapunov feedback controller are associated. This new approach is related to the fact that the synthesis of a linear parameter varying (LPV) feedback controller for the inner loop take into account rotor resistance and mechanical speed as varying parameter. An LPV flux observer is also synthesized to estimate rotor flux providing reference to cited above regulator. The induction motor is described as a polytopic model because of speed and rotor resistance affine dependence their values can be estimated on line during systems operations. The simulation results are presented to confirm the effectiveness of the proposed approach where robustness stability and high performances have been achieved over the entire operating range of the induction motor.

scholarly journals Rotor flux oriented control of induction machine based drives with compensation for the variation of all machine parameters

2013 ◽  
Vol 61 (2) ◽  
pp. 309-324 ◽  
Author(s):  
G. Extremiana ◽  
G. Abad ◽  
J. Arza ◽  
J. Chivite-Zabalza ◽  
I. Torre
Keyword(s):  
Dynamic Performance ◽  
Estimation Algorithm ◽  
Model Parameters ◽  
Electrical Machine ◽  
Saturation Curve ◽  
Machine Model ◽  
Rotor Resistance ◽  
Iron Losses ◽  
Rotor Flux ◽  
On Line

Abstract The performance of rotor flux oriented induction motor drives, widely used these days, relies on the accurate knowledge of key machine parameters. In most industrial drives, the rotor resistance, subject to temperature variations, is estimated on-line due to its significant influence on the control behaviour. However, the rest of the model parameters are also subject to slow variations, determined mainly by the operating point of the machine, compromising the dynamic performance and the accuracy of the torque estimation. This paper presents an improved rotor-resistance on-line estimation algorithm that contemplates the iron losses of the electrical machine, the iron saturation curve and the mechanical losses. In addition, the control also compensates the rest of the key machine parameters such as the leakage and magnetizing inductances and the iron losses. These parameters are measured by an off-line estimation procedure and stored in look up-tables used by the control. The paper begins by presenting the machine model and the proposed rotor flux oriented control strategy. Subsequently, the off-line parameter measurement procedure is described. Finally, the algorithm is extensively evaluated and validated experimentally on a 15 kW test bench

A Novel Rotor Resistance Estimation Technique for Vector Controlled Induction Motor Drive Using TS Fuzzy

2015 ◽  
Vol 6 (3) ◽  
pp. 538 ◽  
Author(s):  
Saji Chacko ◽  
Chandrashekhar N.Bhende ◽  
Shailendra Jain ◽  
R.K. Nema
Keyword(s):  
Steady State ◽  
Induction Motor ◽  
High Performance ◽  
Fuzzy Controller ◽  
Motor Drive ◽  
Estimation Technique ◽  
Motor Speed ◽  
Accurate Identification ◽  
Rotor Resistance ◽  
Rotor Flux

Induction motor with indirect field oriented control is well suited for high performance applications due to its excellent dynamic behavior. But, the indirect field oriented controller is sensitive to variations in rotor time constant, especially variation in rotor resistance. In this study a scheme based on the Rotor flux Model Reference Adaptive Controller is used for on line identification of the rotor resistance and thus improving the steady state performance of the drive.  The overriding feature of this estimation technique is the accurate identification of rotor resistance especially during transient and steady state conditions when the drive is operating at full load and at zero motor speed condition. Moroever, the effectiveness of the TS fuzzy controller utilizing rotor flux for online estimation of rotor resistance for four quadrant operation of motor drive is investigated and compared with the conventional PI and Mamdani fuzzy controller Simulation results in MATLAB/Simulink environment.have been presented  to confirm the effectiviness of the technique.

scholarly journals APPLICATION AND PERSPECTIVES OF MULTIPHASE INDUCTION MOTORS / DAUGIAFAZIŲ VARIKLIŲ NAUDOJIMO SRITYS IR PERSPEKTYVOS

2012 ◽  
Vol 4 (1) ◽  
pp. 67-70
Author(s):  
Benas Kundrotas
Keyword(s):  
Differential Equations ◽  
Induction Motor ◽  
Reference Frame ◽  
Induction Motors ◽  
Matrix Form ◽  
Matlab Software ◽  
Transient Characteristics ◽  
Synchronous Reference Frame ◽  
Three Phase

The article considers the areas of applying multiphase induction motors. Their advantages against three phase motors have become the main reason for employing them in multiphase drives. The paper deals with the six-phase induction motor having two similar three phase windings in the stator shifted by 30 degrees in space and three phase windings in the rotor. Differential equations for this motor are presented and transformed to dq synchronous reference frame. The transformed equations are expressed in a matrix form and solved by MATLAB software using the Dormand-Prince (ode45) method. The transient characteristics of the torque, speed and current of the six-phase induction motor are calculated and discussed. Santrauka Nagrinėjamos daugiafazių variklių naudojimo sritys, pabrėžiami pagrindiniai jų privalumai lyginant su trifaziais varikliais. Nurodomos daugiafazių variklių teigiamos savybės, lemiančios jų naudojimą šiuolaikinėse elektros pavarose. Nagrinėjamas šešiafazis asinchroninis variklis. Jo statoriuje yra dvi vienodos trifazės apvijos, kurių magnetinės ašys skiriasi 30 erdvinių laipsnių kampu, o rotoriuje yra trifazė apvija. Pateikiamos tokio variklio dinamikos lygtys, transformuotos į dq sinchroniškai besisukančią koordinačių sistemą. Transformuotos lygtys užrašomos matricos pavidalu ir sprendžiamos MATLAB programiniu paketu taikant Dormand-Prince (ode45) metodą. Gautos ir ištirtos šešiafazio asinchroninio variklio greičio, momento ir srovių dinaminės charakteristikos.

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