Capacitance monitoring methods, electronic devices, and computer-readable storage media

Abstract

This application relates to the field of circuit technology and provides a capacitance monitoring method, an electronic device, and a computer-readable storage medium. The capacitor is a bus capacitor located on the DC bus of a single-phase rectifier circuit's output side. The monitoring method includes: acquiring the input voltage and input current of the single-phase rectifier circuit; acquiring the capacitor voltage of the bus capacitor of the single-phase rectifier circuit; performing feature extraction on the capacitor voltage to obtain the DC voltage component and the second harmonic voltage component of the bus capacitor; and calculating the measured capacitance value of the bus capacitor based on the input voltage, the input current, the DC voltage component, and the second harmonic voltage component. Embodiments of this application can improve the convenience of capacitance monitoring.

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