A NOVEL ACTIVE LINE CONDITIONER FOR A 3-PHASE SYSTEM Conference Paper uri icon

abstract

  • In this paper a new configuration for an active line conditioner is proposed for correcting voltage unbalances in a three phase ac system. The proposed system injects a correction voltage Vinj (Fig. 1) with proper magnitude and phase (Fig. 2b) in one phase to guarantee balanced voltages at the load terminals. The negative voltage components in the input supply is effectively nullified by the injected voltage. The kVA requirement of the proposed active line conditioner is small, typically 3% for a ten percent unbalance in the input supply. The dynamic cancellation of the negative sequence voltage component by the proposed scheme drastically improves the performance of induction motor type loads connected to a weak ac system. A thorough analysis of the scheme along with the suitable design guides are presented. Finally selected experimental results on a laboratory prototype active line conditioner are detailed.

name of conference

  • Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting

published proceedings

  • IAS 93, PTS 1-3

author list (cited authors)

  • BHAVARAJU, V. B., & ENJETI, P.

complete list of authors

  • BHAVARAJU, VB||ENJETI, P

publication date

  • December 1993