Conventional INC MPPT runs with a fixed step size for each perturbation. This modified MPPT initially runs with a bigger step size when it is far from MPP and as it reaches near MPP it runs with a smaller step size. The advantages of this method are, it tracks MPP faster and runs near MPP with very small fluctuations. I hope it will be helpful for all the young researchers starting in this field and looking for some good foundations. You can write your queries in the comment section.