Title :
A new resonant link aircraft power generating system
Author :
Jahns, T.M. ; Maldonado, M.A.
Author_Institution :
General Electric Corp., Schnectady, NY, USA
fDate :
1/1/1993 12:00:00 AM
Abstract :
A 400 Hz aircraft power generating system which has been designed to achieve significant improvements in power density and reliability is introduced. Design targets for this exploratory development program include system (generator-plus-converter) power density of 1 kVA/lb and mean-time-between-failure (MTBF) of 500 h. At the heart of the new variable-speed constant-frequency (VSCF) configuration is a high-frequency resonant link inverter designed so that all inverter switching occurs under zero-voltage conditions. Advantages include minimization of switching losses and significant reductions in power device switching stresses and electromagnetic interference (EMI) generation. Inverter losses are further reduced by using MOS-controlled thyristors (MCTs) as the power switches in order to take advantage of their low forward voltage. A 60 kVA breadboard version of the system has been constructed, and test results which confirm its key performance characteristics are presented
Keywords :
aircraft; electromagnetic interference; invertors; power supplies to apparatus; switching circuits; thyristor applications; 400 Hz; 500 hours; 60 kVA; EMI; MCTs; MOS-controlled thyristors; MTBF; VSCF; aircraft power generating system; breadboard version; electromagnetic interference; high-frequency resonant link inverter; inverter switching; mean-time-between-failure; minimization; power density; power switches; reliability; stresses; switching losses; variable speed constant frequency design; variable-speed constant-frequency; zero-voltage conditions; Aircraft; Electromagnetic interference; Heart; Inverters; Power generation; Power system reliability; Resonance; Stress; Switching loss; Thyristors;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
