TY JOUR TI SOLAR INSOLATION CALCULATION PROGRAM IN MATLAB / SIMULINK ENVIRONMENT KW matlab KW electric power industry KW calculator KW insolation KW solar collector JO Bulletin of the Angarsk State Technical University AU Konovalov, Y.V. AU Haziev, A.N. PY 2022 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»