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<p>In this study, a robust temperature controller was developed and tested for a solar PV-based electric dryer (SPVED). A cylindrical steel chamber with a diameter of 18.5&#xa0;cm and a height of 24&#xa0;cm was selected as a small prototype model for study. The proposed model comprises a solar PV module, a DC-DC buck converter (DCB) and positive-temperature-coefficient (PTC) DC heating coils. Automatic temperature control was implemented in the proposed system by designing a suitable proportional-integral (PI) controller for the DCB with heating coils as the load. The PI controller was tuned using the particle swarm optimization (PSO) algorithm with the integral of time-weighted absolute error (ITAE) as the performance index. The model was tested experimentally with and without solar irradiation using a solar PV module and a DC power source. Under both conditions, the output temperature response of the proposed dryer exhibited a settling time of approximately 7&#xa0;min, with no overshoot and a deviation of ± 1&#xa0;°C. The proposed model also demonstrated robustness to variations in solar PV voltage and set-point changes.</p>

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Robust Temperature Control of Solar PV-Based Electric Dryer Using DC-DC Buck Converter and PSO-PI Controller

  • 期刊论文

  • 发表日期：

    2026年7月18日

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  • Jeet Dutta,
  • Swmousar Basumatari,
  • Ranjay Das,
  • Rajesh Kondareddy,
  • Prakash Kumar Nayak

摘要

In this study, a robust temperature controller was developed and tested for a solar PV-based electric dryer (SPVED). A cylindrical steel chamber with a diameter of 18.5 cm and a height of 24 cm was selected as a small prototype model for study. The proposed model comprises a solar PV module, a DC-DC buck converter (DCB) and positive-temperature-coefficient (PTC) DC heating coils. Automatic temperature control was implemented in the proposed system by designing a suitable proportional-integral (PI) controller for the DCB with heating coils as the load. The PI controller was tuned using the particle swarm optimization (PSO) algorithm with the integral of time-weighted absolute error (ITAE) as the performance index. The model was tested experimentally with and without solar irradiation using a solar PV module and a DC power source. Under both conditions, the output temperature response of the proposed dryer exhibited a settling time of approximately 7 min, with no overshoot and a deviation of ± 1 °C. The proposed model also demonstrated robustness to variations in solar PV voltage and set-point changes.