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Simultaneous Control of Battery Charging and Load-Following for Gasoline Electric Power Systems with Output Ratio Control by a Single Parameter

Abstract

Combustion engine-based gasoline electric power system is another solution to extend flight time of the multi-copter drones, which are parallelly connected with batteries. In general, the control unit charges the battery based on the SOC (state of charge) signal from the BMU (battery management unit). If the SOC is less than predefined threshold, the control unit starts battery charging by adjusting the engine power until the battery is charged up to specific SOC (Kim in A study on the preliminary design of series hybrid-electric propulsion system for a fixed wing VTOL unmanned aerial vehicle. Master’s Degree Thesis in Hanyang University, 2016; Zhang and Mi in World Electr Veh J 3:843–848, 2009). This method is well known as Hysteresis or Bang-bang control and is good enough for generic gasoline electric power systems. Since the continuous charge and discharge characteristics of this method, it keeps the battery busy so the lifetime of the battery would be shortened and the system efficiency is affected by the battery charge/discharge efficiency. In this thesis, a control method for simultaneous battery charging and load-following for gasoline electric power systems is presented. This proposed method enables not only the gasoline electric power system to follow the load power in real time but also emulates CC–CV (constant current, constant voltage) battery charging and output ratio control features by only a single user control parameter. Moreover, thanks to the load-following feature, the battery stays in almost idle state (no charge/discharge) in normal operation so it makes the battery’s lifetime longer, and the system efficiency is not affected by charge/discharge efficiency of the battery.

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References

  1. Kim BS (2016) A study on the preliminary design of series hybrid-electric propulsion system for a fixed wing VTOL unmanned aerial vehicle. Master's Degree Thesis in Hanyang University

  2. Zhang X, Mi CC (2009) Integrated design of powertrain controllers in series hybrid electric vehicles for efficiency enhancement and battery lifetime extension. World Electr Veh J 3:843–848

    Article  Google Scholar 

  3. Koster J, Humbargar C, Serani E, Velazco A, Hillery D (2011) Hybrid electric integrated optimized system (HELIOS) design of a hybrid propulsion system for aircraft. In: 49th AIAA Science Meeting including the New Horizons Forum and Aerospace Exposition, Orlando, FL, USA, 4–7 January 2011. https://doi.org/10.2514/6.2011-1011

  4. Martini F (2011) World’s first serial hybrid electric aircraft to fly at LeBourget. Le Bourget

    Google Scholar 

  5. Friesrich C, Robertson P (2014) Hybrid-electric propulsion for aircraft. J Aircr 52(1):176–189

    Article  Google Scholar 

  6. Lee B, Park P, Kim C, Yang S, Ahn S (2012) Power managements of a hybrid electric propulsion system for UAVs. J Mech Sci Technol 26(8):2291–2299

    Article  Google Scholar 

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Correspondence to Jae Gu Kang.

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Kang, J.G. Simultaneous Control of Battery Charging and Load-Following for Gasoline Electric Power Systems with Output Ratio Control by a Single Parameter. Int. J. Aeronaut. Space Sci. 23, 419–422 (2022). https://doi.org/10.1007/s42405-022-00441-y

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  • DOI: https://doi.org/10.1007/s42405-022-00441-y

Keywords

  • Series hybrid system
  • Power management unit
  • State-of-charge
  • Combustion engine