摘要: Further development of power transistor and power Darlington current carrying and voltage blocking capabilities led to the application of new General Electric devices in a 40 KVA Pulse Width Modulated DC Link VSCF system. The resu... 展开 Further development of power transistor and power Darlington current carrying and voltage blocking capabilities led to the application of new General Electric devices in a 40 KVA Pulse Width Modulated DC Link VSCF system. The results indicate that the power Darlington devices selected exhibit large losses at the switching frequencies studied. Because of these losses, the devices (in their present status) are considered unacceptable for use in a DC VSCF system. (Author) 收起