A dynamic model for inertia energy stored generator with rectifier system
Due to diode elements, inertia energy stored generator with rectifier system possess the characteristic of nonlinearity, which cause great difficulty in analyzing systematic performance. In this paper, The inertia energy stored generator is modeled based on the fact that subtransient electric motive force (EMF) maintain constant during commutation process, and the uncontrollable rectifier system is also modeled based on state space averaging method. Both of which provide an effective model for systematic analysis.
Small-signal Stability Studies of a 270V DC More-Electric Aircraft Power System
The paper investigates the small-signal stability of a representative 270V DC power system for a more-electric aircraft, which incorporates a switched reluctance generator, under various operation conditions, including power control saturation due to current and voltage limits. Non-linear state-space models for the complete system under the various operating conditions are established, and the eigenvalue method is applied to assess the small-signal stability. Time-domain simulations are used to validate the findings of the proposed analysis technique.
Comparison of prospective topologies for aircraft autotransformer-rectifier units
This paper explores the feasibility of employing 18-pulse autotransformer rectifier units (ATRUs) for more electric aircrafts, thus expanding the usage of these converters onto variable, high frequency applications. Particularly, the paper presents a detailed comparison of three 18-pulse ATRUs, based on input ac harmonic current distortion, output voltage regulation, common mode voltage, impact of impedance mismatch between rectifier paths and impact of input voltage harmonic distortion. The comparison is carried out for the full range of the input line frequency from 400 to 800 Hz. Key analyses and results obtained with Saber simulations are presented for validation of the presented work.