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This paper presents an experimental study on a new design of a Doubly-Excited Flux-Switching Machine (DEFSM) proposed for variable speed DC power generation in future aircraft. This machine uses excitation coils associated with permanent magnets to control the flux-linkage. This gives the possibility of using a diode bridge rectifier which is more reliable than an active bridge. After presenting its...
Starting an aircraft engine with an electrical machine has been one of the major trends for future aircraft. This paper studies the stability of a permanent-magnet machine (PMM) based aircraft starter/generator (S/G) system. Using control-to-output transfer functions, the stability analysis of this S/G system is thoroughly studied. The impact of the key parameters including the control parameters...
This paper investigates the dynamic stability of a droop-controlled multi-generator system in the more electric aircraft (MEA). Based on the developed state-space model of the potential dc electrical power system (EPS) architecture, the stability boundaries of EPS operation depending on parameter variations including component parameters and operating conditions are investigated. The effect of multiple...
The more electric aircrafts require high specific power motors; on the other hand, the design must guarantee long lifetimes. Therefore, most of these motors are synchronous machines, working at high frequencies and made with a large number of coils placed on stator teeth. The Electrical Insulation System (EIS) must be designed for supporting repetitive voltage spikes imposed by modern PWM inverters...
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