ง บทคัดย่อภาษาอังกฤษ Title PHOTOVOLTAIC MODULE MAXIMUM -POWER POINT TRACKING WITH STEP-SIZE VARIATION Author PEERADECH LOUSUWANKUN Advisor Assistant Professor Dr. NIPHAT JANTHARAMIN Academic Paper Thesis M.Eng. in Electrical Engineering, Naresuan University, 2018 Keywords Photovoltaic module Maximum-Power-Point Tracking Step-