| 摘要 |
A system and method that provides early warning of a capacitor failure before it causes a functional failure by including a plurality of redundant capacitive elements arranged in parallel in a capacitor module. A monitor measures a value corresponding to the total capacitance of the module under a selected system operating condition to obtain a baseline value. During system operation, the monitor compares a measured value with the baseline. If any of the capacitive elements in the module fails in an open state or a shorted state, the measured value will differ respect to the baseline, but the remaining capacitive elements allow the system to continue to operate. The user can therefore replace the failed capacitor as part of scheduled maintenance, reducing maintenance and operating costs caused by unexpected, unscheduled maintenance.
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