l pan - School of Control and Mechanical Engineering, Tianjin Institute of Urban Construction, and Control Science and Engineering School, HeBeiUniversity of Technology, ۳۰۰۱۳۰, Tianjin, China

This paper proposes a novel analysis method for inner resistances of photovoltaic (PV) module. The main objectives are to obtain the resistance parameters of PV modules by adjusting I-V equation andvoltage equation of diode and to find the relationship between resistance parameters and power. Firstly,values of serial and parallel resistance at maximum power point are concluded. Secondly, the curves of serial and parallel resistance are obtained when load increased from zero to infinity. Thirdly, the relationship between parallel resistance and power is obtained and the influence caused by ignorance ofresistances is analyzed. Finally, simulation and experimental results of photovoltaic module show that the method is correct and feasible

PV Module,Diode,Serial Resistance,Parallel Resistance