DESIGN OF PROTOTYPE DYNAMIC AC POWER MACHINE WITH EQUIVALENT CIRCUIT MODELING (TORQUE SPEED CURVE OF INDUCTION MOTOR 1,1, KW)

Squirrel cage induction motors are widely used in electric motor drives due to their satisfactory mechanical characteristics (torque, current, overloading) and small dimensions, as well as their low price. When starting an induction motor, a large current is required for magnetizing its core, which results in a low power factor, rotor power losses and a temperature rise in the windings. None of these parameters should reach values beyond certain limits until the motor reaches nominal speed. The speed of an induction motor 1,1kW is affected very little by fluctuations of voltage. The greater the supply voltage of the motor, the induction motor's speed will increase. The torque values (Tstart, TSmax and Tmax) are affected by the value of the motor supply voltage: (Vp-nl : 132.8, Tstart1 : 7.4, T S-max1 : 0.4, Tmax1 : 9.9) V, (Vp-nl : 127.0, Tstart2 : 4.8, T S-max1 : 0.3, Tmax1 : 8.4) V and (Vp-nl : 121.3, Tstart3 : 3.3, T S-max3 : 0.2, Tmax3 : 7.1) V. Stator current (IL-nl ; 2.5, 2.2, 1.9 ) Amp rises gradually on account of the increase in magnetising current (Im : 2.5, 2.2, 1.9) Amp. The magnetising current required to produce the stator flux. The component of the stator current which provides the ampere-turns balancing the rotor ampere-turns will steadily diminish as the rotor current (IL-nl) decrease with the increase in rotor speed (nr).

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Steady State Analytical Study of Stator Current Harmonic Spectrum Components on Three-Phase Induction Motor under Unbalanced Supply Voltage

2020 International Conference on Control, Automation and Diagnosis (ICCAD) ◽

10.1109/iccad49821.2020.9260526 ◽

2020 ◽

Author(s):

Fatima BABAA ◽

Ouafae BENNIS

Keyword(s):

Steady State ◽

Induction Motor ◽

Analytical Study ◽

Supply Voltage ◽

Harmonic Spectrum ◽

Current Harmonic ◽

Stator Current ◽

Three Phase

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Stator flux orientation inverse system decoupling control strategy of bearingless induction motor considering stator current dynamics

IEEJ Transactions on Electrical and Electronic Engineering ◽

10.1002/tee.22847 ◽

2018 ◽

Vol 14 (4) ◽

pp. 640-647 ◽

Cited By ~ 3

Author(s):

Wenshao Bu ◽

Youpeng Chen ◽

Conglin Zu

Keyword(s):

Induction Motor ◽

Control Strategy ◽

Inverse System ◽

Decoupling Control ◽

Stator Current ◽

Stator Flux

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Inverse System Analysis and Modeling of Bearingless Induction Motor and Its Combined Control Strategy

Mathematical Problems in Engineering ◽

10.1155/2014/698171 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Wen-shao Bu ◽

Cong-lin Zu ◽

Chun-xiao Lu

Keyword(s):

Induction Motor ◽

Strong Coupling ◽

Control Strategy ◽

Inverse System ◽

Decoupling Control ◽

Flux Linkage ◽

Inverse System Method ◽

Stator Current ◽

System Method ◽

Stator Flux

Bearingless induction motor is a multi-variable, nonlinear and strong coupling object, the existing inverse control method ignores the stator current dynamics of torque system. Aiming at its nonlinear and strong coupling problems, a novel combinatorial decoupling control strategy based on stator flux orientation and inverse system method is proposed. Taking the stator current dynamics of four-pole torque system into account, the reversibility and inverse system model of torque system are analyzed and established. Adopting the inverse system method, the dynamic decoupling between motor speed and stator flux-linkage is achieved; by online identification and calculation, the airgap flux-linkage of torque system is got. Based on above, feedback and compensation control of two radial displacement components of two-pole suspension system is realized. Simulation results have shown the higher decoupling control performance and stronger anti-interference ability of the decoupling control system; the proposed decoupling strategy not only owns the characteristics of be simple and convenient, but also is effective and feasible.

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ANFIS Based DTC SVPWM Controller for Induction Motor

International Journal for Modern Trends in Science and Technology - RTT2020 ◽

10.46501/ijmtst061102 ◽

2020 ◽

Vol 6 (11) ◽

pp. 6-11

Author(s):

Rohit Kumar and Dr. B. Amarendra Reddy

Keyword(s):

Induction Motor ◽

Dynamic Performance ◽

Voltage Source ◽

Motor Drive ◽

Induction Motor Drive ◽

Space Vector Pwm ◽

Stator Current ◽

Logic Control ◽

Stator Flux

This paper presents three PWM techniques, space vector PWM (SVPWM). SVPWM gives the more rms stator flux ripples in induction motor at 0.76 modulation indices, which gives more ripples in current and torque distortion. The flux performance of the induction motor is improved using three PWM (TPWM) due to twin switching transition with less area of rms stator flux ripple. The PI-control (PIC) doesn’t give the good dynamic performance of the induction motor drive using two level Voltage Source Inverter due to sudden changes in the load or speed. Further to improve dynamic performance in the torque and Flux of induction motor drive is simulated using type-2 fuzzy logic control (TP2FLC) and ANN in place of PIC because; TP2FLC and ANN is effectively dealing with uncertainties, and simulation results of speed, torque, flux and stator current of induction motor is compare with PIC of SVPWM and TPWM.

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Comparative Study of Induction Motor Stator Current Using FFT and Wavelet

i-manager s Journal on Digital Signal Processing ◽

10.26634/jdp.4.4.8310 ◽

2016 ◽

Vol 4 (4) ◽

pp. 1

Author(s):

SAHNI JAYANTA KUMAR ◽

SAHAY KULDEEP ◽

SINGH SATYENDRA ◽

◽

...

Keyword(s):

Comparative Study ◽

Induction Motor ◽

Stator Current

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Simplified Predictive Stator Current Phase Angle Control of Induction Motor With a Reference Manipulation Technique

IEEE Access ◽

10.1109/access.2021.3070790 ◽

2021 ◽

Vol 9 ◽

pp. 54173-54183

Author(s):

Arash Fereidooni ◽

S. Alireza Davari ◽

Cristian Garcia ◽

Jose Rodriguez

Keyword(s):

Induction Motor ◽

Phase Angle ◽

Current Phase ◽

Stator Current

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A Parameter Independent Stator Current Space-Vector Reference Frame-Based Sensorless IPMSM Drive Using Sliding Mode Control

Energies ◽

10.3390/en14092365 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2365

Author(s):

Mohammadreza Moradian ◽

Jafar Soltani ◽

Mohamed Benbouzid ◽

Abbas Najjar-Khodabakhsh

Keyword(s):

Sliding Mode Control ◽

Reference Frame ◽

Sliding Mode ◽

Rotor Speed ◽

Space Vector ◽

Stator Current ◽

Mode Control ◽

Control Scheme ◽

Stator Flux ◽

Stator Resistance

In this paper, a sliding mode control is presented for direct torque and stator flux control of interior permanent magnet synchronous motor in a rotor speed sensorless drive system. The control scheme is developed in a specific synchronous rotating reference frame (X-Y) in which the stator current space vector coincides with the direct (X) axis. For this control technique no need to have any knowledge of machine parameters such as stator two-axis inductances, rotor permanent magnets flux linkage, and even the rotor initial position. However, the on-line actual stator resistance value is required to estimate the stator flux components in the stator stationary two-axis reference frame. In this control strategy, two simple methods are described for estimating the rotor speed and stator resistance. Some simulation and experimental results are presented to support the validity and effectiveness of the proposed control scheme.

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