NASA Glenn Research Center, in collaboration with the aerospace industry and academia, has begun the development of technology for a future hybrid-wing body electric airplane with a turboelectric distributed propulsion (TeDP) system. It is essential to design a subscale system to emulate the TeDP power grid, which would enable rapid analysis and demonstration of the proof-of-concept of the TeDP electrical system. This paper describes how small electrical machines with their controllers can emulate all the components in a TeDP power train. The whole system model in Matlab/Simulink was first developed and tested in simulation, and the simulation results showed that system dynamic characteristics could be implemented by using the closed-loop control of the electric motor drive systems. Then we designed a subscale experimental system to emulate the entire power system from the turbine engine to the propulsive fans. Firstly, we built a system to emulate a gas turbine engine driving a generator, consisting of two permanent magnet (PM) motors with brushless motor drives, coupled by a shaft. We programmed the first motor and its drive to mimic the speed-torque characteristic of the gas turbine engine, while the second motor and drive act as a generator and produce a torque load on the first motor. Secondly, we built another system of two PM motors and drives to emulate a motor driving a propulsive fan. We programmed the first motor and drive to emulate a wound-rotor synchronous motor. The propulsive fan was emulated by implementing fan maps and flight conditions into the fourth motor and drive, which produce a torque load on the driving motor. The stator of each PM motor is designed to travel axially to change the coupling between rotor and stator. This feature allows the PM motor to more closely emulate a wound-rotor synchronous machine. These techniques can convert the plain motor system into a unique TeDP power grid emulator that enables real-time simulation performance using hardware-in-the-loop (HIL).


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Propulsion Electric Grid Simulator (PEGS) for Future Turboelectric Distributed Propulsion Aircraft


    Beteiligte:
    B. B. Choi (Autor:in) / C. Morrison (Autor:in) / T. Dever (Autor:in) / V. G. Brown (Autor:in)

    Erscheinungsdatum :

    2014


    Format / Umfang :

    8 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Propulsion Electric Grid Simulator (PEGS) for Future Turboelectric Distributed Propulsion Aircraft

    Choi, Benjamin B. / Morrison, Carlos / Dever, Timothy et al. | NTRS | 2014


    Propulsion Electric Grid Simulator (PEGS) for Future Turboelectric Distributed Propulsion Aircraft

    Choi, Benjamin / Brown, Gerald V. / Morrison, Carlos et al. | AIAA | 2014


    Turboelectric Aircraft with Aft Propulsion

    WELSTEAD JASON R / FELDER JAMES L | Europäisches Patentamt | 2018

    Freier Zugriff

    Distributed Turboelectric Propulsion for Hybrid Wing Body Aircraft

    Kim, H. | British Library Conference Proceedings | 2008


    Distributed Turboelectric Propulsion for Hybrid Wing Body Aircraft

    Kim, Hyun Dae / Brown, Gerald V. / Felder, James L. | NTRS | 2008