Semiconductor Switch Temperature Baseline Anomaly Detection
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Solution Overview
Problem
Power electronic devices, particularly those with semiconductor switches like IGBTs, often fail under harsh conditions, leading to severe damage to other components due to undetected failures.
Innovation Solution
Monitoring the operating temperature of semiconductor switches and comparing it to a baseline temperature to detect anomalies, indicating potential failures, allowing for proactive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If semiconductor switches operate under harsh conditions to handle high electrical current levels, then power electronic devices can function in demanding applications, but the semiconductor switches are prone to failures that cause severe damage to other components
Solution Approach 1:
The system performs preliminary detection by continuously monitoring operating temperatures of semiconductor switches and comparing them to baseline temperatures before failures occur. This early detection enables proactive replacement of degrading switches, preventing catastrophic failures that would damage other components.
Solution Approach 2:
The system establishes a feedback mechanism by determining baseline temperatures from historical data and continuously comparing current temperatures against these baselines. When temperature deviations exceed thresholds, the system generates alerts for maintenance, creating a closed-loop monitoring system that improves reliability while maintaining high power operation.
2Device complexity
If traditional monitoring methods are used without temperature anomaly detection, then device complexity remains low, but failures go undetected until they cause severe damage
Solution Approach 1:
The system replaces complex mechanical or invasive monitoring methods with thermal field-based anomaly detection. By measuring temperature distributions and comparing them to baseline thermal patterns, the system achieves reliable failure detection using non-invasive thermal monitoring rather than complex electrical diagnostics.
Solution Approach 2:
The system monitors temperature parameters and their deviations from baseline values to detect anomalies. By tracking changes in thermal parameters over time and comparing them against established baselines, the system achieves sensitive failure detection with relatively simple temperature sensing and comparison logic.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents extensive damage by enabling early detection and replacement of failing semiconductor switches, thereby maintaining device integrity.
Implementation Method 1
a first temperature sensor coupled to the first semiconductor switch and configured to measure a present operating temperature of the first semiconductor switch
Data Source
AI summary
Systems and methods for determining an abnormality of a semiconductor switch. A baseline temperature of semiconductor switches within a particular operating electronic device is determined based on measured temperatures of semiconductor switches within at least one operating electronic device. Measurements of a respective temperature value of each semiconductor switch in a plurality of semiconductor switches within the particular operating electronic device is received. An overheating semiconductor switch within the plurality of semiconductor switches is determined based on a determination that the respective temperature value of the overheating semiconductor switch is higher than the baseline temperature by at least a threshold. An abnormal condition for the overheating semiconductor switch is indicated based on determining that an operating temperature of a particular semiconductor switch deviates from the baseline by at least a threshold.