  The current paper presents a Sliding Mode Controller (SMC) for indirect
field-oriented Cascaded Doubly Fed Induction Generator (CDFIG) powered through
a Matrix Converter (MC). The proposed SMC employs a continuous control strategy
to accomplish free chattering fractional-order sliding-mode control and to
ensure that the control of the first DFIG stator's reactive and active power is
separated. An MC is used to control the current provided to the second stator
of the CDFIG as an alternative to standard voltage source inverters. The two
MCs are controlled via Space-Vector Pulse-Width Modulation (SVPWM) and Indirect
Field Oriented Control (IFOC). The proposed Wind Power Generation System (WPGS)
is used with the purpose to ensure Maximum Power Point Tracking (MPPT) sensing
under various disturbance variables such as turbulent wind. The simulation
results prove the efficiency and robustness of the proposed method.
