Improved maximum power extraction strategy for PMSG based wind energy conversion system

Even though hill climbing search (HCS) control is the
simplest MPPT algorithm that does not require any prior
knowledge of the system, it has the disadvantage of being
slow in its response. This slowness in the response is due
to the number of perturbations involved in climbing the hill
and the settling time of the each perturbation. This paper
proposes an improved HCS control, in which the nature of
the input perturbation is changed, so as to improve the control
algorithm's response speed in tracking the maximum
power point of a wind turbine.