UPS Controller Detects Abnormal Components via Reference Comparison
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Solution Overview
Problem
Existing uninterruptible power supplies (UPS) require manual inspection to identify abnormal components, which is time-consuming and inefficient, as they can only determine the presence or absence of abnormalities in the entire system rather than pinpointing specific faulty parts.
Innovation Solution
Incorporating a controller that detects voltage and current values within the UPS, compares these values to predetermined reference values, and uses a table to estimate and display the abnormal portion, allowing for quick identification and restoration of the system without the need for external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an abnormality detector is used to determine the presence or absence of abnormality of the entire uninterruptible power supply, then the abnormality can be detected, but the specific abnormal portion cannot be identified
Solution Approach 1:
The patent divides the uninterruptible power supply into multiple interior portions (power converter, detector, and other components) and assigns specific command values to each portion. When an abnormality occurs, the system identifies which specific portion is abnormal by comparing command values with reference values, thereby segmenting the abnormality detection process to locate the precise faulty component rather than just detecting general system abnormality.
2Measurement precision
If manual inspection of each component is performed to identify the abnormal portion, then the abnormal portion can be found, but it takes significant time
Solution Approach 1:
The uninterruptible power supply performs self-diagnosis by automatically comparing command values with reference values to identify abnormal portions. The controller autonomously determines which interior portion is abnormal without requiring manual inspection, thereby maintaining high identification accuracy while significantly reducing the time required for abnormal portion location.
Solution Approach 2:
The system implements a feedback mechanism where the controller continuously monitors command values, compares them with reference values, and automatically identifies abnormal portions based on deviations. This closed-loop feedback system enables rapid automated identification of faulty components, eliminating the need for time-consuming manual inspection while maintaining precise abnormal portion localization.
3Productivity
If the controller compares command values with reference values to identify abnormal portions, then quick identification is achieved, but the system complexity increases
Solution Approach 1:
The patent pre-establishes reference values for each command value corresponding to different interior portions before operation. These reference values are stored in advance, allowing the controller to quickly compare current command values against them during operation. This preliminary preparation enables rapid abnormal portion identification without requiring complex real-time calculations, thus maintaining high identification speed while minimizing controller complexity.
Data Source
AI summary
An uninterruptible power supply includes a power converter, a detector that detects a voltage value or a current value, and a controller that controls the power converter based on the detected voltage value or current value and generates one or more command values. The controller compares the one or more command values with predetermined reference values respectively corresponding to the one or more command values.