Abstract
ABSTRACT This paper develops a mathematic model to calculate the power losses and efficiency for an onboard three-level brushless synchronous generator (TLBLSG) which consists of pilot exciter (PE), main exciter (ME), and main generator (MG). A back-iteration algorithm which combines an analytical model of the MG stator loading with a three-phase diode bridge rectifier (TPDBR) and a capacitor, an equivalent circuit model of the MG, and a model of steady-state excitation current based on the open circuit characteristic (OCC) is employed to determine the electrical parameters in the MG. Besides, both ME rotor and PE stator currents are calculated by the model of induced electromotive force loading with a TPDBR and an inductance. All the obtained electrical parameters can reflect the influence of rotating speed and load change as well as the saturation effect. Finally, changing laws of the electrical parameters and power losses as a function of speed and load are simulated and discussed in detail. Moreover, efficiencies under different speeds and loads are analysed. The TLBLSG is suggested to be operated in a relatively high-speed range (from 15,000 to 25,000 r/min) and a relatively large load (from 25 to 65 kW) for a high efficiency.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
