Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors
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 t...
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| Format: | Article |
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MDPI AG
2024-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/7/1699 |
| _version_ | 1797212626118246400 |
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| author | Dong-Hyeok Son Sung-An Kim |
| author_facet | Dong-Hyeok Son Sung-An Kim |
| author_sort | Dong-Hyeok Son |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-24T10:45:22Z |
| format | Article |
| id | doaj.art-47ed354ccd4f4be188acc40feda206ab |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-24T10:45:22Z |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-47ed354ccd4f4be188acc40feda206ab2024-04-12T13:18:07ZengMDPI AGEnergies1996-10732024-04-01177169910.3390/en17071699Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction MotorsDong-Hyeok Son0Sung-An Kim1Sansystech, Busan 46918, Republic of KoreaElectric Power Machinery Team, Electric Propulsion Safety Technology Center, Ulsan Headquarters, Korea Marine Equipment Research Institute, Ulsan 44776, Republic of KoreaThis 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.https://www.mdpi.com/1996-1073/17/7/1699current fluctuationinduction motorPI controllerPWM inverterV/f control |
| spellingShingle | Dong-Hyeok Son Sung-An Kim Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors Energies current fluctuation induction motor PI controller PWM inverter V/f control |
| title | Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors |
| title_full | Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors |
| title_fullStr | Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors |
| title_full_unstemmed | Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors |
| title_short | Simplified V/f Control Algorithm for Reduction of Current Fluctuations in Variable-Speed Operation of Induction Motors |
| title_sort | simplified v f control algorithm for reduction of current fluctuations in variable speed operation of induction motors |
| topic | current fluctuation induction motor PI controller PWM inverter V/f control |
| url | https://www.mdpi.com/1996-1073/17/7/1699 |
| work_keys_str_mv | AT donghyeokson simplifiedvfcontrolalgorithmforreductionofcurrentfluctuationsinvariablespeedoperationofinductionmotors AT sungankim simplifiedvfcontrolalgorithmforreductionofcurrentfluctuationsinvariablespeedoperationofinductionmotors |