Determining the flux space vector position in coordinate system relative to stator for determining switching conditions for pulse inverter of induction motor

摘要

The method generates a linguistic variable from the three-phase flux components which defines the position of the stator flux vector in a 60 degree sector of the coordinate system. Based on the three-phase components of the stator flux using fuzzy logic a category class is generated to describe the position of the space vector in the sector. The position is fed to a control system of a fuzzy controller as the third input parameter in addition to the flux and torque deviations. From them the correction signals of a pulse inverter and its conduction times are generated for a fixed period.