| 摘要 |
<p>A distributed power generating system enables very rapid and reliable start-up of an engine (112) used to generate back-up power, thereby substantially reducing the need for stored power. More particularly, the distributed power generating system comprises a power bus (120) electrically coupled to commercial power (122) and to a load (132, 134), an engine (112) comprising a rotatable shaft (113), a starter/generator (114) operatively coupled to the shaft of the engine and electrically coupled to the power bus, and a temporary storage device (130) electrically coupled to the power bus. The starter/generator is adapted to start the engine from a standstill condition and rapidly bring the engine to an operational speed sustainable by the engine alone. To accomplish this, the starter/generator has a short time torque capability higher than the rated torque of the engine and starter/generator. When the engine reaches the operational speed, the starter/generator delivers electrical power to the power bus. Upon a fault of the commercial power, the temporary storage device supplies electrical power to the power bus for delivery to the load and for powering the starter/generator until the engine reaches the operational speed, whereupon the starter/generator takes over supply of electrical power to the power bus for delivery to the load. In an embodiment of the invention, the temporary storage device comprises at least one capacitor that is charged by current on the power bus.</p> |
