AIRCRAFT SOLID STATE POWER CONTROLLER AND METHOD OF MONITORING THE TEMPERATURE OF A SOLID STATE SWITCH IN AN AIRCRAFT SOLID STATE POWER CONTROLLER
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United States of America Patent
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Issued Date -
May 2, 2024
app pub date -
Oct 24, 2023
filing date -
Oct 28, 2022
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Abstract
A method of monitoring the temperature of a solid state switch in an aircraft solid state power controller. The method includes: measuring an electric current (I) flowing through the solid state switch; calculating, based on the measured electric current (I), an introduced electric power (Pel) that is introduced into the solid state switch within the predefined time period (Δt); calculating an increase in temperature (ΔT) of the solid state switch that is caused by the introduced electric power (Pel); calculating an actual temperature (Tact) of the solid state switch by adding the calculated increase in temperature (ΔT) to an ambient temperature (Tamb); and comparing the calculated actual temperature (Tact) with a predefined temperature threshold (Tth) and determining an overheat condition if the calculated actual temperature (Tact) exceeds the predefined temperature threshold (Tth).
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