dc.description | The well–known principle of the direct torque
control applied mainly to squirrel–cage induction motor drives can be generalized and applied to other machines, quantities,
converters and systems. These are: other AC machines (double–fed induction and permanent magnet synchronous machine), active and reactive power, direct power control of
the line side converter, direct controls of both of the converters
in a DC link inverter. These new fields are investigated in this paper generally and their application to the components of a
wind generator practically. The limits of the direct torque control in salient–pole permanent magnet synchronous generator
are given. A solution is given for the stability problem of the
double–fed induction generator. The systems are investigated by simulation, the results show the excellent performance of the proposed controls. | |