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ENHANCEMENT OF POWER QUALITY AND VOLTAGE SAG MITIGATION USING A NOVEL NINE SWITCH POWER CONDITIONER

Pushpa.N, Jayakrishna.G

This paper proposes a novel nine switch converter based integrated power conditioner in place of conventional twelve switch converter based power conditioner for improving power quality. Space vector modulation scheme is proposed for producing gating signals for nine switch converter. In the proposed integrated power conditioner the nine-switch converter replaces shunt and series converters found in conventional back to back power conditioner. Underlying operating principles are discussed comprehensively to demonstrate, how such “series–shunt” replacement can bring forth the full advantages of the nine-switch converter. The shunt and series compensation techniques are discussed and the performance of the proposed nine switch power conditioner is validated through simulations using MATLAB/SIMULINK.