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Design and Experimental Testing of Extended-Range Power Supply System for 15 Horsepower Electric Tractor

Author

Listed:
  • Baochao Wang

    (Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization, Qingdao Agricultural University, Qingdao 266109, China)

  • Yanshi Lv

    (Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization, Qingdao Agricultural University, Qingdao 266109, China)

  • Xianggang Chu

    (Weichai Lovol Intelligent Agricultural Technology Co., Ltd., Weifang 261200, China)

  • Dongwei Wang

    (Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization, Qingdao Agricultural University, Qingdao 266109, China)

  • Shuqi Shang

    (Collaborative Innovation Center for Shandong’s Main Crop Production Equipment and Mechanization, Qingdao Agricultural University, Qingdao 266109, China)

Abstract

Electric tractors have many advantages, including high torque, excellent controllability, energy efficiency, a simple structure, and an electric interface for expansion. However, a significant limitation lies in their endurance. This study presents the design of an extended-range power supply system to ensure continuous endurance for an electric tractor. The objective is to provide a continuous power source for our self-developed electric tractor while preserving the benefits of electric propulsion. Extended-range power systems utilize a primary mover, typically an oil-fueled internal combustion engine, to drive the generator for electricity generation, and the generated AC-form electricity is subsequently converted into stable DC bus voltage by a power electronic converter. The hardware and control design of an extended-range power supply system are finalized and validated through experimental trials. The results demonstrate the system’s capability to sustain stable DC bus voltage amidst disruptions such as sudden load shifts and fluctuations in the prime mover’s speed. Even with a 50% sudden load change, the voltage drop is within 12% and can recover to ±3% within 4 s. The extended-range can be used alone without a battery to power the electric tractor, or it can used in parallel with other extended ranges or batteries for power sharing thanks to the droop control ability.

Suggested Citation

  • Baochao Wang & Yanshi Lv & Xianggang Chu & Dongwei Wang & Shuqi Shang, 2024. "Design and Experimental Testing of Extended-Range Power Supply System for 15 Horsepower Electric Tractor," Agriculture, MDPI, vol. 14(9), pages 1-16, September.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:9:p:1551-:d:1473561
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    References listed on IDEAS

    as
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