Power Converter Ring Buffer Logging for Triggered Fault Analysis
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Solution Overview
Problem
Existing data storage solutions for power conversion devices face challenges in balancing resource efficiency with the need for detailed data analysis, often requiring extensive storage capacity and complex data management.
Innovation Solution
A power conversion device equipped with a power conversion circuit, a buffer data accumulation circuit, a state monitoring circuit, and a data replication circuit that acquires and stores data sets in a ring buffer, generating a trigger signal when predetermined conditions are met, allowing for targeted and efficient data storage in a data storage circuit, including a pre- and post-trigger period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all data sets are continuously stored in a data storage circuit, then detailed data analysis is enabled, but data storage resource consumption increases
Solution Approach 1:
The system performs preliminary actions by continuously accumulating data sets in a ring buffer memory before they are needed for analysis. This allows the data to be readily available when trigger conditions occur, enabling detailed analysis without requiring continuous storage of all historical data in the main storage circuit.
Solution Approach 2:
The invention extracts only the necessary data subsets from the continuous data stream based on trigger conditions. When specific conditions are met (such as error occurrences or operational milestones), the system extracts and stores only those relevant data sets from the ring buffer, rather than storing all possible data, thus reducing storage resource consumption while maintaining analysis capability.
2Quantity of substance
If a ring buffer is used to accumulate data sets, then data storage resource saving is achieved, but detailed data analysis capability may be compromised
Solution Approach 1:
The ring buffer acts as an intermediary between the continuous data acquisition system and the main data storage circuit. It temporarily holds data sets in a cyclic manner, allowing the system to selectively transfer only necessary data to permanent storage based on trigger conditions, thus maintaining both storage efficiency and analysis capability.
Solution Approach 2:
The ring buffer performs preliminary data accumulation and organization before data is transferred to the main storage circuit. This preliminary action ensures that when trigger conditions occur, the relevant data is already prepared and available for immediate transfer, enabling detailed analysis without requiring excessive storage resources.
3Quantity of substance
If data is stored selectively based on trigger conditions, then storage efficiency improves, but data management complexity increases
Solution Approach 1:
The data management system is segmented into distinct functional modules: a ring buffer for continuous data accumulation, a trigger condition monitoring unit for detecting specific events, and a selective transfer mechanism for moving data to storage. This segmentation simplifies the overall complexity by dividing the data management task into manageable, specialized components.
Solution Approach 2:
The system implements self-service through automatic trigger condition monitoring and automated data transfer decisions. The trigger condition unit automatically detects when specified conditions are met and initiates data transfer from the ring buffer to the storage circuit without requiring manual intervention, reducing operational complexity while maintaining storage efficiency.
Data Source
AI summary
A power conversion device is provided, which includes: a power conversion circuit that performs power conversion between a primary power and a secondary power; a buffer data accumulation circuit that, in a predetermined buffer cycle, repeatedly acquires data sets relating to a state of the power conversion circuit and store the data sets in a ring buffer; a state monitoring circuit that generates a trigger signal in a case where a state of a predetermined monitoring target satisfies a predetermined condition; and a data replication circuit that, in a case where a trigger signal is generated, stores, in a data storage circuit, a plurality of the data sets accumulated in the ring buffer in a target storage period including a time before a generation time of the trigger signal.