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@article{199122,
        author = {Sakshi Amrut Nimje and Dr. C. S. Hiwarkar and Pankaj Shivaji Shinde},
        title = {DESIGN OF FULL BRIDGE CYCLO-CONVERTER FOR SPEED CONTROL OF SINGLE-PHASE INDUCTION MOTOR USING IOT},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {11},
        pages = {10551-10558},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=199122},
        abstract = {This project presents the design and implementation of a cycloconverter-based speed control system for a single-phase induction motor using thyristor switching. Conventional induction motors operate at constant speed when supplied with fixed frequency AC power, making speed control difficult. To overcome this limitation, a cycloconverter is used to convert fixed-frequency AC input into variable-frequency AC output without an intermediate DC stage.
The proposed system utilizes a full-bridge cycloconverter circuit using SCRs (Silicon Controlled Rectifiers), which are triggered using a microcontroller from the 8051 family. The microcontroller generates firing pulses synchronized with the input AC supply using a zero-cross detection circuit. By controlling the firing sequence of SCRs, the system produces output frequencies such as F, F/2, F/3, and F/4, enabling effective control of motor speed.
The system also incorporates IoT-based control using an ESP32 module, which allows remote operation through a mobile interface. The ESP32 communicates with the microcontroller and controls both the power supply (via relay module) and operating modes. This enhances the flexibility and usability of the system by enabling wireless monitoring and control. The output waveforms obtained from the cycloconverter are stepped in nature and contain harmonic distortion; however, they are suitable for applications such as motor speed control. The performance of the system is validated through waveform analysis, frequency variation, and motor speed observations. The results confirm that the speed of the motor varies proportionally with the supply frequency.
The proposed system is simple, cost-effective, and suitable for low-speed applications. The integration of IoT further improves the system by enabling smart control and automation. This project demonstrates an effective approach for AC motor speed control using power electronics and embedded systems.},
        keywords = {Cycloconverter, Single-Phase Induction Motor, Speed Control, Thyristor (SCR), 8051 Microcontroller, IoT-Based Control},
        month = {April},
        }