초록 ▼

An electric power starter generator system comprises a synchronous generator and an induction motor/generator mutually coupled to a shaft being driven to an external prime mover. The synchronous generator and the induction motor/generator are driven by the shaft at the same speed. The system include

An electric power starter generator system comprises a synchronous generator and an induction motor/generator mutually coupled to a shaft being driven to an external prime mover. The synchronous generator and the induction motor/generator are driven by the shaft at the same speed. The system includes a rectifier/inverter having ac terminals coupled to the output of the induction motor/generator, and dc terminals coupled to a dc bus. This rectifier/inverter allows bi-directional power flow to effectuate both power generation as well as electric start of the prime mover. The synchronous generator is excited by a commonly driven permanent magnet generator and a modulated exciter field control. The induction motor/generator is self-exciting through the rectifier/inverter once a voltage is established on the dc bus. The establishment of this voltage may be accomplished by a battery, or by connection of the synchronous generator\s output to the input of the rectifier/inverter through a poly-phase contactor. This contactor also allows cross connection of either machine to either distribution bus if one of the machines were to fail, or if the loading on that particular bus became excessive.

대표청구항 ▼

An electric power starter generator system, comprising: a synchronous generator having a first rotor and a first polyphase stator output coupled to an ac bus; an induction motor/generator having a second rotor and a second polyphase stator output; a shaft coupled to said first rotor of said synchron

An electric power starter generator system, comprising: a synchronous generator having a first rotor and a first polyphase stator output coupled to an ac bus; an induction motor/generator having a second rotor and a second polyphase stator output; a shaft coupled to said first rotor of said synchronous generator and to said second rotor of said induction motor/generator, said shaft being drivably coupled to an external prime mover, said shaft driving said synchronous generator and said induction motor/generator at a same speed thereby; and a rectifier/inverter having ac terminals coupled to said second polyphase stator output and dc terminals coupled to a dc bus, said rectifier/inverter allowing bi-directional power flow therethrough.