Aircraft Power Generators: Hybrid Modeling and Simulation for Fault Detection

Fault simulations and diagnostics for a Boeing 747 Auxiliary Power Unit

“…Electrical faults are mostly generated from overheating, which results in an increase in resistance of the generator windings. If the resistance increases excessively open circuits can be created in the generator's windings, as it is reported by Batzel et al [28], Batzel and Swanson [29] and Tantawy et al [30]. The generator fault that is simulated in this work considers the increase in the generator stator resistance.…”

On the well-posedness, equivalency and low-complexity translation techniques of discrete-time hybrid automaton and piecewise affine systems

“…In the dynamical systems theory, the systems that combine time-driven and event-driven dynamics are called hybrid systems [1]. In recent years, hybrid systems have attracted much attention in both academia and industry, largely due to the embedding of event-driven microprocessors in complex automated time-driven dynamics such as automobiles [2], aircrafts [3], air traffic control systems [4], process control systems [5], communication networks [6], robotics [7], biology [8], circuits and electronics [9], networked control systems [10] and power systems [11], to list just a few.…”

Condition monitoring of brushless synchronous generators using wireless sensors

“…As the focus is on fault detection at steady state operation of the generator, the model validation is also conducted in steady-state settings. proposed in literature [92]. The validity of the model for internal faults simulation is presented in the following sections.…”

“…Most fault models in literature are focused on synchronous generators [86,87,88,27,26,89,90]. Only a few works have been reported on modeling of the complete BLSG for internal fault study and even among these, the dynamics of the exciter generator and rectifier are simplified [91,92]. In [91] a BLSG model for stator TTSC fault in the synchronous generator is developed.…”

“…Here, the exciter generator is approximated as an ideal sinusoidal voltage source. A phase domain model of a BLSG with the exciter generator, rectifier, and main generator is presented in [92].…”