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generator excitation system
I don't understand this: "...by means of dc generators mounted on the same shaft as the rotor of the synchronous machine". Could someone pls elaborate more the differences between older system and new brushless excitation system? Thanks.By Hadi Saadat said:The generator excitation system maintains generator voltage and controls the reactive power flow. The generator excitation of older systems may be provided through slip rings and brushes by means of dc generators mounted on the same shaft as the rotor of the synchronous machine. However, modern excitation systems usually use ac generators with rotating rectifiers, and are known as brushless excitation.