| 摘要 |
PURPOSE:To keep the generated frequency of a generator within a certain range by a method wherein a differential gear is provided to a driving system of a shaft generator driven directly by a main engine and the revolution of the generator is corrected according to the variation of the revolution of the main engine. CONSTITUTION:An acceleration gear 5 is put on a main shaft 2 of a diesel engine 1. The rotation of the gear 5 drives a synchronous generator 13 through a pinion gear 6, a sun gear 7, a plurality (usually three) of planet pinion gears 8, a ring gear 9 and a pinion gear 11. A differential gear is composed of the sun gear 7, the planet pinion gear 8 and the ring gear 9. An output of the synchronous generator 13 is rectified 15 and a DC motor 14 is driven. A pinion gear 12, attached to a shaft of the motor 14, is in gear with a planet pinion carrier 10, which rotates the planet pinion gear 8, and drives the differential gear part and corrects the variation of the frequency of the generator 13 caused by the variation of the revolution of the main shaft 2. With this constitution, the frequency of the generator is kept within a certain range easily. |
