IDEA #6OT46X Gaas Solar Batteries On Honeycarbonfiber Bases

GaAs SOLAR BATTERIES ON HONEYCARBONFIBER BASES Description Our institute has sufficient practical experience in develop(cid:173) ment and manufacture of solar batteries of space application. In 2003-2005 years GaAs solar batteries for power supply of the Ukrainian microsatellite "MC-2-8" were developed, flight complete sets of solar batteries and checking-test equipment for the Egyptian microsatellite "EgyptSaM" were developed and manufactured. Innovative aspects and Main Advantages In a construction of GaAs solar batteries were used single junction solar cells on the basis of an GaAs on a germanium substrate (GaAs/Ge) with efficiency about 19-20% manufac(cid:173) tured by E.N.E. company (Brussels, Belgium). For increasing solar batteries reliability, and also for avoidance of negative consequences of complete or partial shadowing the protective (bypass) diodes connected to each group of parallel solar cells were applied. The radiation protection of GaAs solar cells was carried out by cover glasses Thales company (Great Britain). First time in Ukraine the battery were assembled on honeycarbonfiber bases which were manufactured by State Design Office "Yugnoe" (Dnepropetrovsk, Ukraine). First time in Ukraine the technology ultrasonic and welding bythesplit electrode of sil(cid:173) ver interconnections and contact pads an GaAs solar cells was developed. Areas of Application The results of development can be used: • in systems of power supply of satellites with small weight, overall dimensions and low power consumption; • in concentrator GaAs solar batteries of terrestrial applica(cid:173) tion. Designed technology and construction ensure the following characteristics of solar batteries: current (AMO, T=25°C), A operation voltage, V orbit life, years not less than 2,3 not less than 34 5 specific power on the end of life: - on the area of solar cells, W/m2 -225 - on a mass of the solar bat(cid:173) tery, W/kg -75 overall dimensions, mmxmmxmm weight, kg specific weight, kg/m2 695x576x15 no more than 1,15 -2,8 Stage of Development The designed hardware products are tested, are accessible to demonstrating. The off-line and complex terrestrial tests of a solar battery and checking-test equipment are carried out. The reached technological level corresponds to the fifth level (TRL) on gradation INTAS (STCU). Contact information State Enterprise Scientific and Research Technological Institute of Instrument Engineering UA-61010,. Kharkov, Primakova str. 40/42 The deputy of director: Borshchov Vyacheslav Phone/fax +38 057 733 06 62 e-mail: borshchov@kharkov.uktel.net The chief of a department Listratenko Alexandr Phone. +38 057 733 29 33