초록 ▼

A microturbine power generating system includes a battery source for providing startup power. Dc power provided by the battery source is converted to three-phase ac power, and the three-phase ac power is supplied to stator windings of an electrical generator of the system. The three-phase ac power c

A microturbine power generating system includes a battery source for providing startup power. Dc power provided by the battery source is converted to three-phase ac power, and the three-phase ac power is supplied to stator windings of an electrical generator of the system. The three-phase ac power causes the electrical generator to operate as a starter motor. An up chopper may be used to reduce the required voltage of the battery source. A down chopper may be used to charge the battery source during normal operation of the microturbine power generating system. The down chopper can allow the battery source to supply backup power in the event the electrical generator experiences a failure.

대표청구항 ▼

[ What is claimed is:] [1.] A microturbine power generating system comprising:a compressor including a compressor wheel;a turbine for converting gaseous heat energy into mechanical energy, the turbine including a turbine wheel;an electrical generator for converting the mechanical energy produced by

[ What is claimed is:] [1.] A microturbine power generating system comprising:a compressor including a compressor wheel;a turbine for converting gaseous heat energy into mechanical energy, the turbine including a turbine wheel;an electrical generator for converting the mechanical energy produced by the turbine into electrical energy, the electrical generator including a rotor and a stator, the rotor being mechanically coupled to the turbine wheel and the compressor wheel;a battery source for providing dc power; anda startup circuit including an inverter for converting the dc power to ac power, the inverter selectably connected to the stator;whereby the ac power causes the electrical generator to turn the turbine and compressor wheels during startup;wherein the startup circuit further includes an up chopper for boosting voltage of the battery source, an output of the up chopper providing the dc power to the inverter; andwherein the electrical generator provides ac power during normal operation of the microturbine power generating system, wherein the system further comprises a rectifier for rectifying the ac power generated by the electrical generator; and wherein the startup circuit further includes means for using the rectified power to charge the battery source during the normal operation of the microturbine power generating system.