SYNCHRONOUS GENERATORS WITHOUT SLIP RINGS AND BRUSHES

摘要

Synchronous generator, according to this invention, can be seen as transformer (fig. 1) whose middle column (10) with the primary excitation coil (13) are cut out and stuck on a shaft and can be longitudinally rotated between other one or more columns (15) with secondary coils (16). If the middle column coil (13) is powered by DC current (excitation) and the shaft is rotated, AC current will be induced in coils of all surrounding columns, with phase shifts depending on their respective positions related to the core of the rotating column. If a part of the middle column (core 10), bearing the coils, is made in cylindrical form and the coil is put on a spool (14) slightly wider than the core, so that the core can be rotated without contact to the spool, by attaching the spool to the machine case we get a synchronous generator with two pairs of protruding poles without slip rings and brushes.