An ISS solar panel intersecting Earth's horizon. The electrical system of the International Space Station is a critical part of the International Space Station (ISS) as it allows the operation of essential life-support systems , safe operation of the station, operation of science equipment, as well as improving crew comfort.

The U.S. solar array strings on the International Space Station are connected to a sequential shunt unit (SSU). The job of the SSU is to shunt, or short, the excess current from the solar array, such that just enough current is provided downstream to maintain the 160-V bus voltage while meeting the power load demand and recharging the batteries.

operating parameters, such as ISS flight mode, SAW pointing, and seasonal variations in environmental heating, as well as by environmental degradation. SAW performance degradation mechanisms include solar cell proton/electron radiation damage, contamination, meteoroid/debris impact damage and optical property deterioration (i.e., from UV darkening

In this paper we report a new class of transient ISS frame potential variations consistent with arcing using data from the ISS Floating Potential Measurement Unit’s (FPMU) Floating Potential Probe (FPP) instrument. The transients are characterized by a rapid decrease in the negative frame potential. [email protected]).

2012年6月20日 · Managing ISS US Solar Array Electrical Hazards for SSU Replacement via EVA. Ann Delleur and Thomas Kerslake

2014年5月10日 · The International Space Station (ISS) has lost one of its eight power supply channels due to a suspected short in an external power generation component known as a Sequential Shunt Unit (SSU).

sequential shunt unit (SSU). The job of the SSU is to shunt, or short, the excess current from the solar array, such that just enough current is provided downstream to maintain the 160-V bus voltage while meeting the power load demand and recharging the batteries. Should an SSU fail on-orbit, it would be removed and replaced with the on-orbit spare

2016年1月15日 · An SSU failure has happened before on the ISS – once in September 2012, where one of the 82 capacitors inside SSU-3A burned out, leading to the SSU being recovered with no impacts to its ...

The International Space Station (ISS) electrical power system consists of power generation, energy storage, power management, and distribution (PMAD) equipment. Electricity is generated in a system of solar arrays.

2004年8月16日 · The International Space Station (ISS) is the largest and most complex spacecraft ever assembled and operated in orbit. The first U.S. photovoltaic (PV) module, containing two solar arrays, was launched, installed, and activated in early December 2000.