Modeling And Experimental Analysis Of Grid-connected Six-phase Induction Generator For Variable Speed Wind Energy Conversion System

Modeling And Experimental Analysis Of Grid-Connected Six-Phase Induction Generator For Variable Speed Wind Energy Conversion System.

Abstract:   

Grid vector oriented control (GVOC) is applied for grid side PWM converters to maintain the DC-link voltage and to regulate active and reactive power transition between the grid generator. Variable speed operation of a multi-phase generator requires the use of multiple three-phase converters either connected in series or in parallel. Series connection of the converter boosts the DC-link voltage level and allows for interfacing with the voltage grid directly, however, this topology requires control to balance the dc-link voltages from drifting apart, thus complicating the entire system. This configuration of multi-phase machine side converters has been explored. Parallel connection improves the fault tolerance and reliability of variable speed WECS .