CubeSat control and energy management system

CubeSat je vrsta pikosatelita u obliku kocke čije su dimenzije i masa standardizirane. Najmanji model 1U CubeSat ograničen je masom u iznosu do 1,33 kg te dimenzijom stranice u iznosu od 10 cm. Složena struktura satelita obuhvaća nekoliko električnih podsustava (EPS, COMM, C&DH, PL) čiji rad obuhvaća niz složenih funkcija. CubeSat se giba oko Zemlje u definiranoj orbiti, a za njegov autonoman rad potrebna je pretvorba energije zračenja Sunca u električnu energiju putem fotonaponskih ćelija. Izvršen je proračun: kuta orbite satelita u odnosu na vektor Sunce, postotka pomrčine Sunca u orbiti nastale zbog Zemljine sjene, prosječne energije zračenja u ovisnosti o visini te prosječne razine zaprimljene razine zračenja Sunca u orbiti.CubeSat is a picosatellite in shape of a cube whose dimensions and mass are standardized. The smallest model, called 1U CubeSat, is limited in mass by up to 1,33 kg and in size by up to 10 cm. The complex satellite architecture includes several electronic subsystems (EPS, COMM, C&DH, PL) which perform complex functions. The CubeSat revolves around the Earth in a defined orbit and for its autonomous function an energy conversion subsystem is needed which converts solar irradiance into electrical energy. In this work several simulations were made: orbit beta angle in reference to the Sun vector, fraction of the eclipse time caused by the Earth’s shadow, average irradiance depending on orbit altitude, and average yearly Solar irradiance in orbit