Abstract
This article presents a comprehensive set of Generalized State Space Averaging (GSSA) models for the generation of non-linear control signals in the multi-converter system of an Advanced Aircraft Electric Power System (AAEPS). Due to the switching nature and variation in loading configuration in the aircraft system under study, the pulse-width modulation (PWM) control signals demonstrate inherent time-varying behaviors to keep the system's operation within IEEE/military standard limits. Therefore, the proposed technique can be employed to derive the key features of the non-linear switching signals under investigation, hence, can be treated as an effective method of the feedback control signals approximation. Finally, the GSSA approximated signals corresponding to the PWM switching function of the constant power (CP), constant voltage (CV) and constant current (CC) buck-converters in the DC power electronics system of Boeing 767 aircraft are derived, and the simulation results are obtained from a study model developed in PSIM9 environment. Also, the accuracy of obtained results from GSSA model is verified by developing a study model in PSIM9 environment.
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