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DC-DC converter current measurement for MPPT control
Noriyuki Kimura,Yoshinori Sakoda,Toshimitsu Morizane 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper presents the possibility to use the MOS-FET as the current measuring resistance. The shunt resistance is often used to measure the current in power electronics circuit since it is low cost and high reliable. However the reduction of components is always desirable for reduction of the cost and high reliability. Maximum power point tracking is indispensable for the renewable energy source, though the precise measurement of the power is not necessary. So the authors propose to use the MOS-FET switching device installed in the dc-dc converter circuit as the current measuring resistance. Simulation and experimental results of the first stage investigation are shown.