Capacitor Testing TRIZ Cases
- Power Converter Capacitor Life Estimation Under Variable Grid Stress
Periodic capacitor isolation and charge-discharge sensing estimate remaining life under unbalanced grid and load stress.
- Capacitor Lifespan Estimation Under Fluctuating Drive Currents
Models self-heating and temperature transitions to estimate capacitor lifespan more accurately under fluctuating drive currents.
- Capacitor Bank Failure Detection Using Compensated Unbalance Current
Compensated unbalance current uses existing phase current and bus voltage measurements to detect capacitor bank element failures without extra transformers.
- Decoupling Capacitor Leakage Blocking With MOSFET Ground Isolation
A MOSFET switch disconnects a damaged decoupling capacitor from ground to block leakage current, cut power loss, and limit heat.
- Single-Pin Crystal Oscillator BIST for Capacitor Calibration
Dedicated BIST circuitry calibrates capacitor matching and verifies single-pin crystal oscillator blocks without disrupting normal operation.
- Battery Lifetime Estimation Using SoC and Temperature Aging Models
Real-time SoC, temperature, current, and voltage data feed an aging model to predict battery remaining life more accurately under varying conditions.
- Energy Storage Ground Fault Detection Using Co-Phasal Harmonics
Co-phasal harmonic analysis of AC phase-to-ground and DC pole-to-ground voltages detects and helps locate midpoint ground faults.
- Energy Storage Ground Fault Detection Across the Electrical Midpoint
AC and DC co-phasal harmonic monitoring detects and localizes energy storage ground faults that conventional pole-voltage methods miss.
- Capacitor Bank Health Check Using Dual-Current Holdup Measurement
Dual constant-current discharge and a single comparator improve capacitor bank holdup-time checks by cancelling leakage-current error.
- Lithium-Ion Capacitor Deterioration Detection via SOC-OCV Resistance
Measure lithium-ion capacitor resistance during charge and discharge using SOC-OCV voltage estimates for faster, more accurate deterioration assessment.
- HVDC Capacitor Monitoring Through Dual-Domain Degradation Detection
Frequency- and time-domain signal analysis estimates capacitance and power loss for accurate online HVDC capacitor monitoring.
- Solid-State Switch Timing for Multi-Mode Capacitor Insulation Testing
Dynamic switching timing enables DC, VLF, and square-wave generation, resolving the limitation of traditional damped AC-only testing devices.
- Capacitor Diagnosis via Frequency Spectrum Analysis
A capacitor diagnosis device extracts specific current frequency components to detect deterioration states.
- Regulator Diagnostic Circuit for Capacitor Connection State
A diagnostic circuit detects capacitor connection states by switching regulator output voltage to a higher level during a specific period.
- Capacitor Health Monitoring via Resonant Frequency Analysis
A monitoring system couples an antenna to capacitor bushings to form a resonant LC circuit for signal transmission.
- Impedance-Based String Protection for Multi-Stage Capacitor Banks
Calculates incremental per-unit impedance to detect capacitor element failures, preventing misoperations caused by measurement errors and aging.
- Capacitor Life Diagnosis via Output Voltage Ringing Detection
A capacitor life diagnosis apparatus detects output voltage ringing to generate a signal indicating electrolytic capacitor health.
- LC Oscillating Circuit for Power Capacitor Testing
An LC oscillating circuit compensates reactive power to reduce real energy consumption during high-capacitance capacitor testing.
- Lithium-ion capacitor degradation prediction via multiphysics modeling
Multiphysics modeling predicts lithium-ion capacitor degradation by tracking electrolyte concentration changes, reducing physical testing costs.
- Resistance Measurement Using Pulsed Current for Low Impedance Energy Storage
A resistance measuring device generates defined current pulses via parallel switching to calculate internal impedance accurately.
- Power Element Failure Detection via Dual Temperature Models
Dual temperature models detect power element failure by comparing calculated and measured thermal values to resolve aging-induced precision errors.
- Capacitor Status Indicator Plates Visual Failure Detection
Visually distinct indicator plates display capacitor health states without external power or connectivity.
- MMC Capacitor Degradation Detection via Charging Time Analysis
A modular multilevel converter detects capacitor degradation by measuring charging and discharging times without additional current sensors.
- Dielectric Breakdown Time Measurement for Electronic Components
A test device applies high-frequency square-wave voltage to electronic components for accurate dielectric lifetime prediction.
- Filter Capacitor Degradation Detection via Current Sum of Squares
A controller measures filter capacitor currents and computes sum of squares values to identify degradation.
- Capacitor Module Health Monitoring for Data Integrity
A controller disables a charger to assess capacitor module health based on operating values.
- Alarm Sounding Component State Detection via Capacitance Sampling
A detection circuit applies pulse voltage to an alarm sounding component and samples the equivalent load capacitor feedback.
- Ground Fault Detection Offset Voltage Divider Circuit
Offset voltage divider circuit measures charge voltage across a flying capacitor regardless of polarity.
- Supercapacitor Diagnosis in Vehicle Door Latches
A computing device measures open load and discharge electrical parameters to determine a supercapacitor diagnostic value.
- DC Capacitor Life Determination via Rectifier Charging Current
A capacitance estimating unit calculates DC capacitor health by integrating rectifier output current during initial charging phases.
- Multi-terminal Capacitor Equivalent Circuit Model via S-parameter Grid Topology
A two-dimensional grid topology combines unit-cell models to create equivalent circuit representations for multi-terminal capacitors.
- DC Power Supply Bus Defect Detection via Voltage Ripple Analysis
A detection system monitors DC power supply bus voltage ripple and mean value to identify component anomalies without additional sensors.
- Capacitor Test Circuit for Voltage Regulator EMI Noise Detection
A voltage regulator circuit uses open loop mode to detect a.c. signals on the output.