DC CAPACITOR DEGRADATION ALARM CIRCUIT
First Claim
1. A DC (direct current) capacitor degradation alarm circuit, comprising:
- at least one capacitor degradation detection device which includes two filter circuits receiving a rectified voltage and at least one degradation detection element, wherein;
the two filter circuits, which receive the rectified voltage and perform filtering operation, are coupled in parallel, and each filter circuit includes a plurality of capacitor modules coupled in series; and
the degradation detection element electrically bridges the two filter circuits with connection nodes located between the capacitor modules.
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Abstract
A DC capacitor degradation alarm circuit is a capacitor degradation detection device including two filter circuits and a degradation detection element. The two filter circuits, which receive a rectified voltage and perform filtering operation, are coupled in parallel and include a plurality of capacitor modules coupled in series. Each capacitor module can be a single capacitor or includes a plurality of capacitors coupled in series or parallel to allow users to arrange construction thereof to receive required capacitance. The degradation detection element electrically bridges the two filter circuits with connection nodes located between the capacitor modules to instantly detect a voltage difference value of the two filter circuits online and perform operation by incorporating with total output voltage to get voltage difference value percentage. In the event that the obtained percentage exceeds a preset range, the degradation detection element automatically generates a capacitor degradation alarm signal to alert users.
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Citations
9 Claims
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1. A DC (direct current) capacitor degradation alarm circuit, comprising:
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at least one capacitor degradation detection device which includes two filter circuits receiving a rectified voltage and at least one degradation detection element, wherein; the two filter circuits, which receive the rectified voltage and perform filtering operation, are coupled in parallel, and each filter circuit includes a plurality of capacitor modules coupled in series; and the degradation detection element electrically bridges the two filter circuits with connection nodes located between the capacitor modules. - View Dependent Claims (2, 3, 4, 5)
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6. A DC capacitor degradation alarm circuit, comprising:
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at least one capacitor degradation detection device which includes a filter circuit receiving a rectified voltage and at least one degradation detection element, wherein; the filter circuit, which receives the rectified voltage and performs filtering operation, includes a plurality of capacitor modules coupled in series; and the degradation detection element electrically bridges the capacitor modules. - View Dependent Claims (7, 8, 9)
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Specification