Analysis of Torque Ripple Reduction in Induction Motor DTC Drive with Multiple Voltage Vectors

Rosić, Marko; Bebić, Milan

doi:10.4316/aece.2015.01015

Cited by 10 publications

(13 citation statements)

References 20 publications

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“…In DTC, CSF imposition has been achieved without SVM or modified hysteresis controllers [46][47][48][49][50][51][52]. A two-step torque control algorithm has been implemented to achieve minimum torque ripple [46].…”

Section: Constant Frequency Controllersmentioning

confidence: 99%

“…Based on the flux and torque errors of both motors, optimised voltage vector is chosen from a common switching table. Soft computing techniques [48,111,118] and sensorless control algorithms [94][95][96] were implemented as in conventional two-level inverter based DTC.…”

Section: Dtc Using Special Convertersmentioning

confidence: 99%

“…In a certain sector, this limits the control options to maximum of two vectors each time the torque or flux error reaches the hysteresis band limit (upper or lower). To overcome this, techniques to synthesise intermediate voltage vectors in two‐level inverter [47, 48, 69] and DTC using special converters are introduced. Special converters like matrix converters [44, 94–96, 109–111] and multilevel inverters [49–52, 97, 98, 112–119] provided more voltage vectors for better control options.…”

Section: Dtc Using Special Convertersmentioning

confidence: 99%

“…Special converters like matrix converters [44, 94–96, 109–111] and multilevel inverters [49–52, 97, 98, 112–119] provided more voltage vectors for better control options. This allowed to design modified switching table, increased torque hysteresis levels [47, 69] and selecting optimised voltage vector to provide maximum torque rate under dynamic conditions [48] for better controllability and reliability.…”

Section: Dtc Using Special Convertersmentioning

confidence: 99%

See 3 more Smart Citations

Review of recent advancements of direct torque control in induction motor drives – a decade of progress

Kumar

Iqbal

Lenin

2018

IET Power Electronics

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Since the invention of direct torque control (DTC) in later 1980s for alternating current (AC) motor drives, it has undergone many modifications to improve the control strategy. This study provides a comprehensive review of recent advancements of DTC of induction motor (IM) for the past one decade. Strategies adopted to improve the performance of DTC based on switching table, constant switching frequency operation, intelligent control, sensorless control and predictive control are extensively discussed with its key results and algorithms.

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Section: Constant Frequency Controllersmentioning

confidence: 99%

Section: Dtc Using Special Convertersmentioning

confidence: 99%

Section: Dtc Using Special Convertersmentioning

confidence: 99%

Section: Dtc Using Special Convertersmentioning

confidence: 99%

See 2 more Smart Citations

Review of recent advancements of direct torque control in induction motor drives – a decade of progress

Kumar

Iqbal

Lenin

2018

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…This scheme provides very fast responses at reference change with significant torque and motor current ripple. The previous problem can be solved in different ways [23][24][25]; switching table modification, using multilevel hysteresis comparators, or duty ratio modulated DTC. This paper presents a simple modified scheme, which uses twelve-sector division (C12DTC) instead of the usual αβ plane division into six sectors.…”

mentioning

confidence: 99%

An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives

et al. 2017

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This paper analyses symmetrical and unsymmetrical voltage sag effects on the torque and speed deviation in direct torque controlled (DTC) induction motors (IMs) for adjustable speed drives (ASDs). The capability of an ASD for continuous normal operation in case of short supply disturbances is essential for high performance drives. In this paper, an updated scheme is proposed for boosting ASD performances during supply disturbances with voltage reduction. Flux weakening is an effective method to overcome the torque-decreasing problem in case of DC-link voltage diminishing. It is also shown that speed reduction is an efficient procedure to obtain the voltage sag insensitivity of an ASD, which is appropriate for the existing industrial applications. Extensive laboratory testing has been conducted to verify the performances and effectiveness of the proposed control algorithm. The suggested method requires only a modification of converter control software or operating speed change without any additional hardware components. Extended tests under various voltage sags events were carried out on a 1.5 kW laboratory drive, and the obtained results have been compared with an industrial DTC drive.

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Development of ANFIS-based reference flux estimator and FGS-tuned speed controller for DTC of induction motor

2018

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This paper discusses about self-regulating the reference flux in induction motor (IM) direct torque control (DTC) drive by fuzzy logic. Self-regulation is improved by using "Artificial Neural Network (ANN)" and "Adaptive Network Based Fuzzy Inference System (ANFIS)" based reference flux estimators. Furthermore, PI speed controller is investigated to develop the performance of the drive. Two different PI speed controller tuning strategies, manual and Fuzzy Gain Scheduling (FGS), are compared for load torque disturbance. The results clearly show that the modified DTC of IM with "ANFIS-based reference flux estimator and FGS-tuned PI speed controller" is most suitable for torque ripple reduction and speed control.

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Analysis of Torque Ripple Reduction in Induction Motor DTC Drive with Multiple Voltage Vectors

Cited by 10 publications

References 20 publications

Review of recent advancements of direct torque control in induction motor drives – a decade of progress

Review of recent advancements of direct torque control in induction motor drives – a decade of progress

An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives

Development of ANFIS-based reference flux estimator and FGS-tuned speed controller for DTC of induction motor

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