Determination of the main parameters of the photovoltaic solar module Baydaulet A. Urmashev, Murat Kunelbayev, Almas N. Temirbekov, Syrym Kassenov, Zhadra Zhaksylykova and Farida Amenova E3S Web Conf., 191 (2020) 01004 Published online: 24 September 2020 DOI: 10.1051/e3sconf/202019101004