Power Element Failure Detection via Dual Temperature Models

The patent transforms the fixed thermal network parameters into dynamic parameters that are continuously updated based on real-time temperature monitoring. The system periodically measures actual temperature under known load conditions and uses these measurements to update the thermal resistance and thermal capacitance values, making the calculation model adapt to aging-induced changes while maintaining computational efficiency

The patent implements a feedback mechanism where the calculated temperature is continuously compared with actual temperature measurements. The difference between calculated and measured temperatures is used to adjust and update the thermal network parameters, creating a closed-loop system that self-corrects for aging effects and maintains precision without requiring complex real-time thermal modeling

The patent changes the approach from using fixed statistical fatigue curves to dynamically adjusting the fatigue assessment based on actual operating parameters. The system continuously monitors temperature, load conditions, and cycle counts, and updates the damage accumulation calculation using real-time parameter values rather than relying solely on pre-established statistical curves, thereby accounting for actual manufacturing variations and operating condition differences

The patent performs preliminary calibration by establishing the relationship between operating conditions and fatigue damage before actual operation. The system pre-determines the fatigue curve parameters for different operating conditions and stores them for quick reference during operation, enabling accurate real-time fatigue assessment without requiring complex real-time analysis while maintaining reliability across manufacturing variations