Implementation of a V/f Controlled Variable Speed Induction Motor Drive

Duranay, Zeynep Bala; Güldemir, Hanifi; Tuncer, Servet

doi:10.24003/emitter.v8i1.490

Cited by 18 publications

(6 citation statements)

References 13 publications

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“…However, changing the power supply frequency became an easy and simple task since the introduction of the power electronic devices. Hence, voltage with required frequency can be obtained by a power electronic device known as inverter, the output voltage of the inverter may have variable or fix amplitude and frequencybased on switching used method [18].…”

Section: Induction Motor Speed Controllermentioning

confidence: 99%

Simulation model for pulse width modulation-voltage source inverter of three-phase induction motor

Shneen

Shuraiji

2023

IJPEDS

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Induction motor has been widely applied in many sectors, as it has the advantages of simplicity, toughness and can withstand hard environment conditions. The working of such motor in constant voltage/frequency (V/F) speed control method has been popular since the introduction of the power electronic devices, which consequently make the implementation of this method simpler and effectives. The V/F speed control is dominated choice for many applications, especially open loop control and also for closed loop control when the accuracy is not a crucial issue. This study deals with two cases of controlling open and close of the electronic switches. The first with equal intervals by placing regular pulses at the opening and closing periods, and the second using three-phase pulse width generator, through which the control of different periods is carried out according to the required control. Four models have been simulated in this study including, three-phase induction motor at constant torque (constant load) as well as at variable torque (variable load), modeling of PWM-VSI for three-phase induction motor at constant torque (constant load) as well as at variable torque (variable load). The results have shown that speed profile of the IM can be improved by controlling the invertor using PWM technique.

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Section: Induction Motor Speed Controllermentioning

confidence: 99%

Simulation model for pulse width modulation-voltage source inverter of three-phase induction motor

Shneen

Shuraiji

2023

IJPEDS

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“…Figure 7 shows the major components of a PWM-based VFD: non-controlled three-phase rectifier, DC bus/filter, and the three-phase inverter with its control unit. The VFD varies the speed of the induction motor based on v/f control to keep the torque constant [24]. Figure 8 presents the variation of the stator voltage of IM versus frequency.…”

Section: B Variable Frequency Ac Drivementioning

confidence: 99%

Optimized Wind Turbine Emulator based on an AC to DC Motor Generator Set

Aljarhizi

Nouaiti

Ibrahmi

et al. 2023

Eng. Technol. Appl. Sci. Res.

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This study presents an Optimized Wind Turbine Emulator (OWTE) based on a DC generator driven by a three-phase Induction Motor (IM). The IM speed is varied using an AC drive that converts fixed RMS voltage and frequency to variable ones due to v/f control. The frequency reference of the control was calculated through optimized equations of a wind turbine model for maximum power and torque. The overall system was simulated on Matlab/Simulink using a wind speed profile scenario. An experimental test bench controlled by a TMS320F28379D card was set up in the laboratory to confirm the effectiveness of the obtained simulation results.

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“…A representative example of an open-loop control method is V/f control. This method is particularly advantageous as it significantly reduces implementation costs because it does not necessitate the use of sensors and high-performance MCUs [20][21][22][23][24]. This makes V/f control a cost-effective solution for controlling induction motors.…”

Section: Introductionmentioning

confidence: 99%

Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors

Son,

Kim

2024

Energies

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This paper introduces a straightforward control strategy aimed at the reduction of current fluctuations within the low-frequency domain of open-loop V/f control in induction motor drives. Traditional control techniques necessitate the addition of a current compensator based on motor parameters and the use of digital filters such as band-pass or high-pass filters. These methods, however, rely on precise motor parameters and involve complex filter design and implementation. The proposed control is capable of suppressing current fluctuations without controlling the slip of the induction motor. The proposed control strategy generates the forced rotation angle and command input voltage using the V/f block and outputs the d-axis voltage using a proportional integral controller to keep the d-axis current constant at zero. The difference between the command input voltage and the d-axis voltage is applied as the q-axis voltage and then applied through SVPWM. In order to verify the effectiveness of the proposed control, the proposed control is implemented and analyzed using power simulation based on the results of the analysis of the causes of current fluctuations in the induction motor. Finally, the effect of suppressing current fluctuations of the induction motor is verified through experimental results. In the 10~19 Hz range, where the conventional V/f control method resulted in current fluctuation rates exceeding 10% and peaking at 113.3% at 13 Hz, the proposed method suppressed the fluctuation rate to below 8.6% across all frequencies. This paper validates the effectiveness of the proposed control strategy through these results.

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Implementation of a V/f Controlled Variable Speed Induction Motor Drive

Cited by 18 publications

References 13 publications

Simulation model for pulse width modulation-voltage source inverter of three-phase induction motor

Simulation model for pulse width modulation-voltage source inverter of three-phase induction motor

Optimized Wind Turbine Emulator based on an AC to DC Motor Generator Set

Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors

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