PROJECT TITLE :
Employing dual scaling mode for adaptive hill climbing method on buck converter
For adaptive hill climbing technique, variable stepping is achieved by sizing the change of power over the change of voltage (dPPV/dVPV) and amendment of power over amendment of D (dPPV/dD) to applicable step size using a properly tuned scaling issue. However, the photovoltaic (PV) power versus voltage curve has two different slopes which are the left-hand side of the most power point (MPP), and right-hand facet of MPP (ROM). The fine-tuned scaling issue for the left-hand aspect PV slope has sensible performance at left-hand facet of MPP (LOM) however will cause overshoot when system operates at the ROM; while scaling factor properly tuned for the proper-hand aspect PV slope has good performance at ROM but slow voltage response when the system operates at LOM. Dual scaling issue technique is proposed to realize smart performance at LOM and ROM. Besides that, the drawback of implementing hill climbing method on buck converter is discussed, where using constant step size, the hill climbing method has tiny voltage response at point far from MPP but large voltage response at purpose near MPP. Based on the results obtained from a lab-scale prototype, it is proven that the proposed technique is straightforward and effective.
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