AUTOMATIC PARALELLING DEVICE FOR VARIABLE-SPEED POWER GENERATING SYSTEM

PURPOSE:To enable synchronous paralelling, by providing a circuit for correcting the phases of system voltage and generator voltage and a circuit for regulating the system voltage and the generator voltage uniformly. CONSTITUTION:A constant voltage operating unit 13, a phase detector 14 and a voltage regulation operating unit 16 in a reactive component operating unit 18 output a voltage difference signal Id, a phase difference signal theta and a reactive component difference signal Id based on the system voltage VL and the generator voltage Vg. A phase difference correction operating unit 15 for current operating units 12-1-12-3 outputs secondary induction voltage having corrected phase difference based on the secondary induction voltage of an induction generator 1 and a phase difference signal theta. An exciting current command operating unit 19 controls a cyclo-converter 3 connected to the secondary of the induction generator 1 based on the corrected secondary induction voltage, the voltage difference signal Id and the reactive component difference signal Id.