A Simplified DTC-SVPWM Scheme for Induction Motor Drives Using a Single PI Controller

Peter, Antony K; Mathew, Jaison; Gopakumar, K.

doi:10.1109/tpel.2022.3197362

Cited by 25 publications

(7 citation statements)

References 36 publications

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“…where K δ = (3/2)(P/2)(l m /σl s l r )|ψ s |ψ r | [11]. The optimal voltage vector (v n ) for nth sample of the flux vector is selected as per the objective function (10), which minimizes the torque and flux feedback errors…”

Section: A Offline Data Creationmentioning

confidence: 99%

“…So only ((3 × 50) + (50 × 50) + (50 × 6)) values of w and (50 + 50 + 6) values of b need to be stored in memory. Using this, for instantaneous value of ψ , T , and θ s , the ANN computes output of first layer using (11), then output of second hidden layer using (12), and outputs of output layer using (13). The switching pulses are generated by rounding off the outputs of the nodes of the output layer.…”

Section: Switching Pulses Generation Using Annmentioning

confidence: 99%

“…A variant of SVMDTC with only one PI controller has been proposed in [11], which reduces tuning effort, but it still exhibits poor transient response. Another approach is to use duty ratio modulation-based DTC (Duty-DTC) [12], [13], [14], but with increased motor parameter dependency and computational burden.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

ANN-Based Improved Direct Torque Control of Open-End Winding Induction Motor

Lodi,

Beig,

Al Jaafari

et al. 2024

IEEE Trans. Ind. Electron.

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This article presents an improved artificial neural network (ANN)-based direct torque control (DTC) algorithm for open-end winding induction motor (OEWIM) sensorless drives. The ANN replaces the traditional look-up table and serves as an efficient data storage system, allowing for optimal voltage vector selection based on small values of torque error and flux error for every angular position of the stator flux vector. By replacing the hysteresis controllers, improved torque and flux tracking are achieved with improved transient response. The proposed ANN-based DTC is verified through simulation as well as experimental tests. The experimental results and comparative results are presented. Index Terms-Artificial neural network (ANN), direct torque control (DTC), open-end winding induction motor (OEWIM), torque ripple.

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Section: A Offline Data Creationmentioning

confidence: 99%

Section: Switching Pulses Generation Using Annmentioning

confidence: 99%

See 1 more Smart Citation

ANN-Based Improved Direct Torque Control of Open-End Winding Induction Motor

Lodi,

Beig,

Al Jaafari

et al. 2024

IEEE Trans. Ind. Electron.

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show abstract

“…The VPWM(modified) is also used in drives for the purpose of reducing torque ripple [34], increasing the operation range [35] and computational time [36] The three-phase inverters are implemented with each phase needing two thyristors; only one thyristor is ON at a time such that the inverter of Fig. 1 requires three legs to assume a total of eight (8) possible switching configurations from 000 to 111(Fig.…”

Section: Conventional Svpwmmentioning

confidence: 99%

Mitigation of Harmonics Using Novel Sector-Based Switching Pattern Space Vector Pulse Width Modulation

Mohiuddin

Maricar²,

Kadir

et al. 2023

IEEE Access

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Pulse Width Modulation (PWM) driven power converters are widely used in realizing the function of rectification and inversion in renewable and emerging power applications. They play a key role in tying renewable energy sources of solar and wind to conventional energy grid systems. Such emergying styles of power systems are referred to as Distributed Generation (DG) or energy mix. The PWM-based switching devices are also sources for injecting harmonics to degrade the quality level in this emerging style of DG systems causing steady-state waveform distortion. Thus power converters operated by finely tuned PWM play an important role in mitigating the voltage waveform distorting harmonics and consequently improving the stability of the system. This paper presents the mitigation of harmonic contents by reproducing as a novel space vector-based switching pattern of SVPWM. In this work, the proposed switching pattern will have a DC link RMS current equal to or less than that of a conventional SVPWM current under the same switching frequency (SF), load, L-C filter, DC bus voltage, and Modulation Index (MI). The results include a 13.43% improvement in Total Harmonic Distortion (THD) at relatively high modulation indices. The Weighted Total Harmonic Distortion (WTHD) has also improved by 47.37% and the number of thyristors has been reduced lowering switching losses. The Matlab-Simulink simulation results have been experimentally verified with an Advanced Digital Analog Learning Module (ADALM M2k)-based experimental setup, improving the proposed SVPWM THD by 13.49%. The conventional and proposed SVPWM performance comparison is done by obtaining Fast Fourier Transform (FFT) by driving a two-level three-phase voltage source inverter.

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“…The proposed algorithm is an error-based controller and does not need an accurate model of the plant. Since differential will amplify the sensor noise, PI control is often used in motor control engineering [25]- [26]. At present, the most commonly used control method in optical telescopes is integral separation proportional integral (IS-PI) algorithm [27], which is a fundamental form of nonlinear PI control algorithm.…”

Section: Introductionmentioning

confidence: 99%

A Tanh Control Method for the Third Mirror’s Z Axis of Large Optical Telescope

Zhou,

Xie,

Qian

et al. 2023

IEEE Access

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The position accuracy of the third mirror's Z axis will directly affect the measurement accuracy of the optical telescope, so it is necessary to improve the position accuracy. In order to improve the control performances of the third mirror's Z-axis of a large optical telescope, this paper proposes a novel control algorithm based on hyperbolic tangent function (tanh). The proposed algorithm is used to replace the traditional integral separated proportional-integral (IS-PI) controller which is widely used in industry servo control system. Firstly, a mathematical model of the third mirror's Z-axis is established. Secondly, a controller based on tanh is proposed, and the characteristics and stability of the algorithm are analyzed. Thirdly, the parameters tuning method of the proposed algorithm is given. The simulation results show that the proposed algorithm has higher tracking accuracy than IS-PI controller. Finally, experiments are carried out on a large optical telescope's Z axis. In the experiments, IS-PI controller and tanh controller are compared, and the results show that the control performances are greatly improved.INDEX TERMS high precision position control, motor control, hyperbolic tangent function, optical telescope, Integral separation proportional integral.

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A Simplified DTC-SVPWM Scheme for Induction Motor Drives Using a Single PI Controller

Cited by 25 publications

References 36 publications

ANN-Based Improved Direct Torque Control of Open-End Winding Induction Motor

ANN-Based Improved Direct Torque Control of Open-End Winding Induction Motor

Mitigation of Harmonics Using Novel Sector-Based Switching Pattern Space Vector Pulse Width Modulation

A Tanh Control Method for the Third Mirror’s Z Axis of Large Optical Telescope

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