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@article{187974,
        author = {Ayesha Iliyaj Patvekari and Trupti Sanjay Kamble and Nandkumar Nittin Latthe and Vedika Mohan Todkar},
        title = {Microcontroller Based Three Phase Soft Starter},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {7},
        pages = {785-788},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=187974},
        abstract = {This Paper presents the design and development of the microcontroller-based soft starter system for three-phase induction motors, aiming to reduce high inrush currents and mechanical stress associated with conventional direct-on-line (DOL) motor starting. By using a PIC18F4520 microcontroller, the system implements phase-angle control to gradually ramp up the motor voltage, resulting in a smooth startup process.
The system includes a zero-crossing detector circuit using the LM324 operational amplifier, opto-isolators (MOC3021) for gate signal isolation, and thyristors or TRIACs for power switching. The overall design improves the reliability, efficiency, and controllability of motor startup while ensuring electrical isolation and noise immunity. The final output drives a three-phase squirrel cage induction motor, commonly used in industrial applications.},
        keywords = {},
        month = {December},
        }