Voltage regulation bandwidth
IntroductionThe increasing use and criticality of electrical systems on-board aircraft is driving the development of new fault-tolerant generator technologies [1][2][3][4] and new power distribution systems such as higher-voltage DC networks [5][6][7][8][9]. However, the behaviour of these integrated systems under fault conditions is not well understood, especially the propagation of transients around the system, which, if uncontrolled, may lead to further equipment malfunction or failure.MIL-STD-704F [10] describes allowable DC-bus power quality limits in terms of voltage deviation and current ripple. Exceeding these limits, during load changes, bus switching events or fault conditions, may result in equipment going offline causing further disruption. In this paper a supercapacitor based energy storage device is used to mitigate the DC-bus transients that result from short-circuit faults across the AC terminals of a five-phase fault-tolerant generator, load changes and voltage steps.