Capacitance monitoring methods, electronic devices, and computer-readable storage media
By obtaining the input voltage and current in a single-phase rectifier circuit and combining it with capacitor voltage feature extraction, the measured capacitance value of the bus capacitor is calculated, solving the problem of online capacitor monitoring in the circuit and realizing convenient and efficient capacitor life assessment and early warning.
CN116047175BActive Publication Date: 2026-05-26ECOFLOW INC
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Patent Information
- Application Number
- CN202310092454.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-01-30
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2043-01-30
AI Technical Summary
Technical Problem
Existing technologies make it difficult to monitor capacitors online in circuits, resulting in low convenience of capacitor monitoring.
Method used
By acquiring the input voltage and current of the single-phase rectifier circuit and extracting the voltage characteristics of the bus capacitor, the measured capacitance value of the bus capacitor is calculated. The relationship of the second harmonic power is used to perform online monitoring without disassembling the capacitor.
Benefits of technology
It enables online monitoring of capacitors during the operation of a single-phase rectifier circuit, improving the convenience and accuracy of capacitor monitoring, and allowing for timely assessment of capacitor lifespan and the execution of early warning prompts.
✦ Generated by Eureka AI based on patent content.
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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