SYSTEM AND METHOD FOR ESTIMATING STATE OF HEALTH OF CAPACITIVE DEVICE
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United States of America Patent
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May 4, 2017
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May 4, 2016
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Abstract
State of health processes and systems are provided for analyzing a capacitor, such as a supercapacitor. The process includes, for instance: determining a measured capacitance of a capacitor; estimating an effective series resistance (ESR) of the capacitor; determining, using the measured capacitance and the effective series resistance, a linearized capacitance parameter (CAP) for the capacitor; and signaling should the CAP drop below, or the ESR rise above, a respective specified threshold for the capacitor. Using the CAP and the effective series resistance, an amount of energy remaining in the capacitor may be determined, upon which to base one or more actions.
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