Accession Number : ADA283610


Title :   Intermediate Design and Analysis of the PANSAT Electrical Power Subsystem


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Hand, Gregory F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a283610.pdf


Report Date : Mar 1994


Pagination or Media Count : 156


Abstract : This thesis examined three primary components of the electrical power subsystem (EPS) for the Petite Amateur Navy Satellite (PANSAT): (1) the solar array; (2) the power conditioning and control subsystem (PCCS); and (3) the batteries. The emphasis of this thesis was to analyze the output performance of the solar array. Additionally, the derivation of the hybrid PCCS proposed for the EPS was examined and the use of Nickel-Cadmium batteries as a candidate for the secondary power source was discussed. The investigation of the solar array's output performance led to PANSAM (PANSAT Solar Array Model), a computer model which simulates the power output of the solar array. The user can specify the sun's declination, the orbit's inclination, and the satellite's orientation and rate of rotation about each of its three axes. Once a simulation is complete, PANSAM provides the effective surface area illuminated by the sun, and the output current and power. The average effective area determined by PANSAM was 17.6% less than the 1259/sq cm originally proposed by the PANSAT staff. This contributed to a substantial reduction in predicted power. A preliminary transient thermal analysis of PANSAT was also conducted to provide temperature data for PANSAM. PANSAT, Electrical power system, Solar array output performance analysis, Power conditioning and control subsystem


Descriptors :   *SOLAR CELLS , *ELECTRIC POWER , *POWER CONDITIONING , *NICKEL CADMIUM BATTERIES , *BATTERY COMPONENTS , OUTPUT , CONTROL , SIMULATION , TRANSIENTS , TEMPERATURE , EARTH ORBITS , MODELS , PERFORMANCE TESTS , COMPUTERS , NAVY , SECONDARY , RATES , ARRAYS , THESES , ILLUMINATION , REDUCTION , SURFACES , THERMAL ANALYSIS , ARTIFICIAL SATELLITES , AXES , CADMIUM , DESIGN CRITERIA , MODULATION , ROTATION , CURRENTS , SUN , SPREAD SPECTRUM


Subject Categories : Electric Power Production and Distribution
      Logistics, Military Facilities and Supplies
      Electricity and Magnetism
      Unmanned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE