Static Transfer Switch Control with Voltage Sensor Reconstruction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Static transfer switch systems (STS) experience reduced performance and reliability due to voltage sensor failures, which occur while the system operates and lead to incomplete voltage measurements.
Innovation Solution
A fault-tolerant algorithm and method that detects and isolates faulty voltage sensors in real-time, reconstructs a voltage to replace the faulty sensed voltage using healthy sensor readings, and ensures continued operation with a complete set of sensed voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the system operates with failed voltage sensors, then continuous power supply can be maintained, but the fault algorithm acts on incomplete voltage measurements reducing performance
Solution Approach 1:
The patent creates virtual copies of failed sensor measurements through reconstruction algorithms that use mathematical relationships between voltage sensors. By generating estimated voltage values from healthy sensors, the system maintains complete measurement sets for the fault algorithm, preserving both continuous operation and full system performance.
Solution Approach 2:
The patent introduces a voltage reconstruction algorithm as an intermediary component that bridges the gap between failed sensors and the fault algorithm. This intermediary processes data from healthy sensors and generates substitute measurements, allowing the system to operate continuously at full performance without direct input from failed sensors.
2Reliability
If multiple voltage sensors fail, then system reliability decreases, but the fault-tolerant algorithm can reconstruct voltages to maintain operation
Solution Approach 1:
The patent creates virtual copies of failed sensor measurements through reconstruction algorithms. By using mathematical relationships between voltage sensors, the system generates estimated values that replace failed measurements, maintaining reliability even with multiple sensor failures while managing complexity through systematic reconstruction procedures.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors sensor health, detects failures through parameter analysis, and activates reconstruction algorithms that use data from healthy sensors. This feedback loop maintains system reliability by automatically compensating for sensor failures and restoring complete measurement sets.
Data Source
AI summary
An apparatus comprises: a first power source to generate first voltages; a power switch to supply the first voltages to a load as load voltages or not supply the first voltages to the load; first sensors to sense first sensed voltages based on the first voltages, and load sensors to sense the load voltages to produce sensed load voltages; and a controller to: upon detecting a failure of the first sensors, identify a faulty sensed voltage of the first sensed voltages caused by the failure based on at least the first sensed voltages and whether the power switch supplies or does not supply the first voltages to the load; compute a reconstructed sensed voltage to replace the faulty sensed voltage based on healthy sensed voltages of the first sensed voltages that are not faulty; and monitor the healthy sensed voltages and the reconstructed sensed voltage.