METHOD OF MEASURING THE ROTOR CURRENT OF SYNCHRONOUS GENERATORS WITH BRUSHLESS EXCITATION Russian patent published in 2008 - IPC H02K29/08 G01R19/25 G01R31/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and may be used in the rotor current transducers for regulation of the generator excitation conditions, and for diagnostics of the rotor winding state the invention allows measuring the rotor current with time resolution smaller than one revolution of the rotor, producing the signal proportional to the rotor current independent on the rotor speed and getting an oscillogram of the generator rotor current to analyse its spectrum to estimate the working conditions of the generator rotor circuitry and excitation circuitry. According to this invention, a magneto sensitive material is inserted in insulating spacer between conducting half-rods along the rotor axis, the rod sensitivity vector being perpendicular to the rotor axis. The rotor current is determined from the electrical signal generated by the magneto sensitive element.

EFFECT: measuring the rotor current with time resolution smaller than one revolution of the rotor, producing the signal proportional to the rotor current independent on the rotor speed and getting an oscillogram of the generator rotor current to analyse its spectrum to estimate the working conditions of the generator rotor circuitry and excitation circuitry .

3 cl, 1 dwg