Microcontroller-Based Soft Starter and Overcurrent Detector for Enhancing Performance of Induction Motor

Leila Lestiana, Muchlas Muchlas, Tole Sutikno


When an induction motor starts up, it draws a large current, which can damage it and cause a voltage dip effect that interferes with other electrical equipment. The machine, however, has numerous applications, particularly in the industrial sector, due to its low cost, robustness, and dependability. Induction motor performance must be improved to reduce starting current surges and protect against overcurrent. Thyristors are used in the developed system to control the voltage level. The microcontroller's trigger pulse causes a ramp-up in supply voltage, resulting in a soft-starting effect in a 1-phase induction motor. The system detects overcurrent using the popular current sensor module. This research results in a high-performing soft starter and overcurrent detector. When compared to supplying the motor directly online, the soft-starter unit can reduce the starting current by 55%. Meanwhile, the embedded overcurrent detector performs admirably, accurately detecting motor overcurrent and cutting off the power supply when the motor reaches overcurrent.


Microcontroller; Soft-starter; Overcurrent Detector; Induction Motor; Ramp-up Voltage

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U. Sengamalai, G. Anbazhagan, T. M. T. Thentral, P. Vishnuram, T. Khurshaid, and S. Kamel, “Three phase induction motor drive: A systematic review on dynamic modeling, parameter estimation, and control schemes,” Energies, vol. 15, no. 21, p. 8260, 2022.

V. Biot-Monterde, A. Navarro-Navarro, I. Zamudio-Ramirez, J. A. Antonino-Daviu, and R. A. Osornio-Rios, “Automatic classification of rotor faults in soft-started induction motors, based on persistence spectrum and convolutional neural network applied to stray-flux Signals.,” Sensors, vol. 23, no. 1, p. 316., 2023.

M. Habyarimana, D. G. Dorrell, and R. Musumpuka, “Reduction of starting current in large induction motors,” Energies, vol. 15, p. 3848, 2022.

E. Kosykh, A. Udovichenko, N. Lopatkin, and G. Zinoviev, “Analysis of the control system for a soft starter of an induction motor based on a multi-zone AC voltage converter,” Electronics, vol. 12, no. 1, p. 56, 2023.

J. G. Kim, “Soft start analysis of induction motor using current phase angle,” J. Electr. Eng. Technol., vol. 17, no. 6, 2021.

Y. C. Arif, R. Rakhmawati, A. Saksana and Suhariningsih, "Implementation of AC-AC Voltage Controller for Reduce Transient Current at Three Phase Induction Motor," 2019 International Seminar on Application for Technology of Information and Communication (iSemantic), pp. 465-470, 2019.

M. S. A. Rahim et al., “Determination of soft starter firing angle performance to mitigate motor high inrush current using current limitation method,” IOP Conf. Ser. Mater. Sci. Eng., p. 767, 2020.

M. Akbaba, “A novel simple method for elimination of DOL starting transient torque pulsations of three-phase induction motors,” Eng. Sci. Technol. an Int. J., vol. 24, no. 1, pp. 145–157, 2021.

M. K. Hasan, M. M. Ahmed, B. Pandey, H. Gohel, S. Islam, and I. F. Khalid, "Internet of Things-based smart electricity monitoring and control system using usage data," Wireless Communications and Mobile Computing, vol. 2021, pp. 1-16, 2021.

S. K. Bisoriya and C. S. Sharma, “Arduino uno based fault detection, and speed control scheme for single phase induction motor,” JETIR, vol. 8, no. 7, pp. 486–493, 2021.

M. Ashmitha, D. J. Dhanusha, M. S. Vijitlin, and G. B. George, “Real time monitoring iot based methodology for fault detection in induction motor,” Irish Interdiscip. J. Sci. Res., vol. 5, no. 2, pp. 72–83, 2021.

A. Shukla, S. P. Shukla, S. T. Chacko, M. K. Mohiddin, and K. A. Fante, “[Retracted] Monitoring of Single-Phase Induction Motor through IoT Using ESP32 Module,” J. Sensors, vol. 2022, pp. 1–8, 2022, doi: 10.1155/2022/8933442.

S. P. Kumar, U. N. Babu, P. V. Kumar, S. Raghuram, S. K. Asif, and N Venkateswarlu, “Induction motor protection system using microcontroller,” Int. J. Res. Eng. IT Soc. Sci., vol. 9, no. 2, pp. 222–228, 2019.

O. Umahon, D. K. Jerome, and I. S. Ejededawe, “Microcontroller based fault detection and protection of three phase induction motor against abnormal conditions,” Glob. Sci. Journals, vol. 7, no. 2, pp. 394–402, 2019.

Youvanshivappa, “3-Phase induction motor protection and condition detec system using Pic18 F452 Microcontroller,” Int. J. Eng. Res. Technol., vol. 8, no. 8, pp. 15–17, 2019.

A. Banik, J. Umesh, G. Bhadade and A. Gaikwad, "Speed Control of Single Phase Induction Motor using TRIAC and Bluetooth Device," 2023 IEEE 2nd International Conference on Industrial Electronics: Developments & Applications (ICIDeA), pp. 516-521, 2023.

R. Santhosh, Sailakshmi, V. S. M, S. Yadav, N. M and S. P, "No-Load and Over Load Protection for Single Phase Induction Motors," 2021 2nd International Conference on Smart Electronics and Communication (ICOSEC), pp. 462-466, 2021.

M. -Q. Tran, M. -K. Liu, Q. -V. Tran and T. -K. Nguyen, "Effective Fault Diagnosis Based on Wavelet and Convolutional Attention Neural Network for Induction Motors," in IEEE Transactions on Instrumentation and Measurement, vol. 71, pp. 1-13, 2022.

P. M. Shabestari and Ali Mehrizi-Sani, “Current limiting and torque pulsation reduction of the induction motors,” in EEE Power & Energy Society General Meeting (PESGM), pp. 1–5, 2019.

Diodes-Incorporated, “ULN2002A/ULN2003A/ULN2004A High-voltage, high-current, darlington transistor arrays.” p. Document number: DS35313 Rev. 9-2, 2024.

Đ. Lazarević, M. Živković, Đ. Kocić, and J. Ćirić, “The utilizing hall effect-based current sensor ACS712 for true RMS current measurement in power electronic systems,” Sci. Tech. Rev., vol. 72, no. 1, pp. 27–32, 2022.

W. M. Syed and R. Thakur, "Power Factor Improvement and Harmonics Reduction in PWM AC Chopper Fed Three-Phase Induction Motor Drive Using Fuzzy Logic Controller," 2022 IEEE Delhi Section Conference (DELCON), pp. 1-6, 2022.

B. Kopchak and A. Kushnir, "Research of Transition Processes of Single-Phase Collector Motor With AC Voltage Controller Model Created on Project Design Data," 2021 IEEE 3rd Ukraine Conference on Electrical and Computer Engineering (UKRCON), pp. 353-357, 2021.

A. M. Kadam, M. D. Bhosale, R. D. Thorat, C. S. Salunkhe, and J. A. S., “SCR based soft starter for three phase induction motor,” Int. J. Nov. Res. Dev., vol. 7, no. 6, pp. 350–358, 2022.

S. Sobhi, M. Reshadi, N. Zarft, A. Terheide, and S. Dick, “Condition monitoring and fault detection in small induction motors using machine learning algorithms,” Information, vol. 14, no. 6, p. 329, 2023.

DOI: https://doi.org/10.31763/simple.v6i1.92


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Signal and Image Processing Letters

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