Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

Operational Control Logic of Series Hybrid Power System for the Unmanned Aerial Vehicle

무인기용 직렬 하이브리드 동력시스템 운용 제어로직

  • Lee, Bohwa (Aeropropulsion Research Division, Korea Aerospace Research Institute) ;
  • Park, Poomin (Aeropropulsion Research Division, Korea Aerospace Research Institute) ;
  • Kim, Keunbae (Aeropropulsion Research Division, Korea Aerospace Research Institute)
  • Received : 2020.07.06
  • Accepted : 2020.11.15
  • Published : 2021.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

The series hybrid system targeted in this study uses a reciprocating engine, a generator, and a battery as a main power source for the unmanned aerial vehicle. The generator is directly connected to the drive shaft of the reciprocating engine, and the operating characteristics of the reciprocating engine-generator set were confirmed through ground integration tests. In this study, based on the test results, a control logic is proposed an efficient use of the reciprocating engine-generator power and battery power. Also, the power variations of the reciprocating engine-generator and battery according to the logic were verified through simulation. As a result, it was confirmed that the engine-generator power supplied the power required for propulsion along with the battery power by the proposed control logic.

본 연구에서 대상으로 삼은 직렬 하이브리드 시스템은 무인기용으로 왕복엔진, 발전기, 배터리를 주 동력원으로 사용한다. 발전기는 왕복엔진의 구동축에 직결되며, 왕복엔진-발전기 세트의 운용 특성은 지상통합시험을 통해 확인하였다. 본 연구에서는 해당 시험 결과를 바탕으로 왕복엔진-발전기 출력과 배터리 출력을 효율적으로 사용하기 위한 제어로직을 제시하였고, 로직에 따른 왕복엔진-발전기와 배터리의 출력 변동은 시뮬레이션을 통해 확인하였다. 그 결과, 발전기 출력은 제시된 제어로직에 의해 배터리 출력과 함께 추진요구전력을 공급함을 확인하였다.

Keywords

Acknowledgement

본 논문은 한국항공우주연구원 주요사업의 일환으로 수행되는 "다중 전기추진 비행체 형상 및 체계설계연구"과제와 "유인 미래모빌리티 하이브리드 전기추진시스템 기술개발"과제의 지원을 받아 수행되었습니다.

References

  1. Kim, K., Lee, B. and Park, P., "Technology Trends on the Electric Propulsion System," Current Industrial and Technological Trends in Aerospace, Vol. 14, No. 1, pp. 70-82, 2016.
  2. Glassock, R.R., Hung, J.Y., Gonzalex, L.F. and Walker, R.A., "Design, Modelling and Measurement of a Hybrid Powerplant for Unmanned Aerial Systems," Australian Journal of Mechanical Engineering, Vol. 6, No. 2, pp. 69-72, 2008. https://doi.org/10.1080/14484846.2008.11464559
  3. Kim, K. and Lee, B., "Design and Performance Prediction of the Hybrid Power System for Small Multi-copter," The Society for Aerospace System Engineering Spring Conference, Jeju, Korea, Apr. 2018.
  4. Kim, K. and Lee, B., "Design Characteristics on the Hybrid Power System for Quad-Tilt Prop," Proceedings of the 2017 Korean Society of Propulsion Engineers Spring conference, Jeju, Korea, Jun. 2017.
  5. Lee, B. and Kim, K., "Ground Integration Tests of a 5 kW Series Hybrid Power System for the Unmanned Aerial Vehicle," Program of the 2018 Korean Society of Propulsion Engineers Spring conference, Jeju, Korea, Jun. 2018.
  6. Ehsani, M., Gao, Y. and Emadi, A., Modern Electric, Hybrid electric, and Fuel cell vehicles fundamentals theory and design, 2nd ed., CRC Press, U.S.A., 2017.
  7. World Wide Web location http://www.sullivanuv.com/wp-content/uploads/2017/12/S676-700U-01-Datasheet-2017.pdf
  8. Kim, K., Lee, B., Yang, S., Lee, D., Kim, C., Yang, I., Lee, Y., Oh, J., Kand, B. and Park, E., "Research on High-efficiency Hybrid Power and Flight Control for Future Air Vehicle [Sub-1 : Power Technology Research]," Korea Aerospace Research Institute, Report No. 2019-045, 2019.
  9. Blair, G.P., "Design and Simulation of Two-Stroke Engines," Society of Automotive Engineers, Warrendale PA, 1996.
  10. Lee, B., Park, P., Kim, K. and Kwon, S., "The Flight Test and Power Simulaion of a UAV Powered by Solar cells, a Fuel cell and Batteries," Journal of Mechanical Science and Technology, Vol. 28, No. 1, pp. 399-405, 2014. https://doi.org/10.1007/s12206-013-0936-7
  11. Tremblay, O. and Dessaint, L.A., "Experimental Validation of a Battery Dynamic Model for EV Applications," World Electric Vehicle Journal, Vol. 3, pp. 289-298, 2009. https://doi.org/10.3390/wevj3020289