Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Development of an Environmental Friendly Hybrid Power System and its Application to Agricultural Machines

친환경 하이브리드 동력 시스템 개발 및 농기계 응용

  • Kim, Sangcheol (Department of Agricultural Engineering, National Academy of Agricultural Science, RDA) ;
  • Hong, Youngki (Department of Agricultural Engineering, National Academy of Agricultural Science, RDA) ;
  • Kim, Gookhwan (Department of Agricultural Engineering, National Academy of Agricultural Science, RDA)
  • 김상철 (국립농업과학원 농업공학부) ;
  • 홍영기 (국립농업과학원 농업공학부) ;
  • 김국환 (국립농업과학원 농업공학부)
  • Received : 2014.11.24
  • Accepted : 2015.01.30
  • Published : 2015.05.01
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Abstract

A hybrid power system was developed for agricultural machines with a 20kW output capacity, and it was attached to a multi-purpose cultivator to improve the performance of the cultivator. The hybrid system combined heterogeneous sources: an internal-combustion engine and an electric power motor. In addition, a power splitter was developed to simplify the power transmission structure. The cultivator using a hybrid system was designed to have increased fuel efficiency and output power and reduced exhaust gas emissions, while maintaining the functions of existing cultivators. The fuel consumption for driving the cultivator in the hybrid engine vehicle (HEV) mode was 341g/kWh, which was 36% less than the consumption in the engine (ENG) mode for the same load. The maximum power take off output of the hybrid power system was 12.7kW, which was 38% more than the output of the internal-combustion engine. In the HEV mode, harmful exhaust gas emissions were reduced; i.e., CO emissions were reduced by 36~41% and NOx emissions were reduced by 27~51% compared to the corresponding emissions in the ENG mode. The hybrid power system improved the fuel efficiency and reduced exhaust gas emissions in agricultural machinery. The hybrid system's lower exhaust gas emissions have considerable advantages in closed work environments such as crop production facilities. Therefore, agricultural machinery with less exhaust gas emissions should be commercialized.

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References

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