Stator flux optimised Direct Torque Control system for induction motors

Arias, A.; Romeral, L.; Aldabas, E.; Jayne, M.G.

doi:10.1016/j.epsr.2004.06.014

Cited by 20 publications

(9 citation statements)

References 9 publications

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“…Substituting (11), (12) and (13) into the above equation yields λT s |u s,k+1 ||Ψ r,k | sin γ = λT s ω r |Ψ s,k ||Ψ r,k | cos θ + λT s βT e (k). (19) Equation (19) could be simplified; therefore, u qr under SFO could be concluded as As shown in Fig.3, u qr could be concluded according to (20), which is represented as BA in Fig.3.…”

Section: Expected Value Of Stator Voltage Vector Designmentioning

confidence: 99%

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Novel torque ripple minimization algorithm for direct torque control of induction motor drive

Liu

Guo

Hao

et al. 2009

J. Shanghai Univ.(Engl. Ed.)

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To elucidate the principles of notable torque and flux ripple during the steady state of the conventional direct torque control (DTC) of induction machines, the factors of influence torque variation are examined. A new torque ripple minimization algorithm is proposed. The novel method eradicated the torque ripple by imposing the required stator voltage vector in each control cycle. The M and T axial components of the stator voltage are accomplished by measuring the stator flux error and the expected incremental value of the torque at every sampling time. The maximum angle rotation allowed is obtained. Experimental results showed that the proposed method combined with the space vector pulse width modulation (SVPWM) could be implemented in most existing digital drive controllers, offering high performance in both steady and transient states of the induction drives at full speed range. The result of the present work implies that torque fluctuation could be eliminated by imposing proper stator voltage, and the proposed scheme could not only maintain constant switching frequency for the inverter, but also solve the heating problem and current harmonics in traditional induction motor drives.

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Section: Expected Value Of Stator Voltage Vector Designmentioning

confidence: 99%

“…This step is executed by using (17); (ii) Calculate the needed stator voltage vector u qr , realized by (20);…”

Section: Minimum Torque Ripple Control Systems Designmentioning

confidence: 99%

Novel torque ripple minimization algorithm for direct torque control of induction motor drive

Liu

Guo

Hao

et al. 2009

J. Shanghai Univ.(Engl. Ed.)

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show abstract

“…The model uncertainties and nonlinearities inherent to induction motors are well suited to the EKF's stochastic nature [2]. Using this method, it is possible to make estimation of states whilst simultaneously performing identification of parameters in a short time [12][13][14], even taking measurement and system noises directly into system model. This explains why the EKF estimator is widely applicable in the sensorless DTC of IMs.…”

Section: Introductionmentioning

confidence: 99%

Direct Torque Control of Sensorless Induction Machine Drives: A Two-Stage Kalman Filter Approach

Zhang

Kang

Chen

et al. 2015

Mathematical Problems in Engineering

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Extended Kalman filter (EKF) has been widely applied for sensorless direct torque control (DTC) in induction machines (IMs). One key problem associated with EKF is that the estimator suffers from computational burden and numerical problems resulting from high order mathematical models. To reduce the computational cost, a two-stage extended Kalman filter (TEKF) based solution is presented for closed-loop stator flux, speed, and torque estimation of IM to achieve sensorless DTC-SVM operations in this paper. The novel observer can be similarly derived as the optimal two-stage Kalman filter (TKF) which has been proposed by several researchers. Compared to a straightforward implementation of a conventional EKF, the TEKF estimator can reduce the number of arithmetic operations. Simulation and experimental results verify the performance of the proposed TEKF estimator for DTC of IMs.

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“…Intelligent controllers such as fuzzy or neuro-fuzzy controllers are used to solve the problems of the classical DTC [14][15][16][17][18][19][20]. However, the torque and flux ripples still high in these techniques, and most of them depends mainly on the speed signal.…”

Section: Introductionmentioning

confidence: 99%

A Novel Direct Torque Fuzzy Controller for Permanent Magnet Synchronous Motor Drive

Hassan

Mossa²,

El-Sawy

et al. 2009

JES. Journal of Engineering Sciences

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Stator flux optimised Direct Torque Control system for induction motors

Cited by 20 publications

References 9 publications

Novel torque ripple minimization algorithm for direct torque control of induction motor drive

Novel torque ripple minimization algorithm for direct torque control of induction motor drive

Direct Torque Control of Sensorless Induction Machine Drives: A Two-Stage Kalman Filter Approach

A Novel Direct Torque Fuzzy Controller for Permanent Magnet Synchronous Motor Drive

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