A BRUSHLESS EXCITER CAPABLE OF PROVIDING INITIAL EXCITATION POWER DURING FIELD FLASHING FOR BLACK START OPERATION OF BRUSHLESS SYNCHRONOUS GENERATORS

摘要

A brushless exciter capable of providing initial excitation power during fieldflushing enabling black start operation of brushless synchronous generatorscomprising a plurality of stator poles (2) having pole surface; at least one d.c.field winding (3) for excitation; a three phase armature winding (6) covering,the rotor (1); a trapezoidal groove is configured on the pole surfaces in whicha plurality of trapezoidal shaped permanent magnet (8) being fixedlydisposed, and in that the magnets (8) disposed north and south locations onalternate stator poles (2) producing a magnetic flux in the air gap onproviding a d.c. field winding (3) which causes the armature winding (6) togenerate sufficient voltage to provide the initial excitation power to theexciter.