Power Converter Delay Controller for Voltage Detector Soundness
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Solution Overview
Problem
Existing electric power conversion systems face challenges in accurately determining the soundness of the power conversion process due to the simultaneous start of conversion operations with power supply, making it difficult to detect failures in voltage detectors and control devices.
Innovation Solution
Incorporating delay controllers that delay the conversion operation start by a predetermined time, allowing for initial and secondary determinations based on voltage detection results before and after this delay, enabling more accurate assessment of system soundness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the converter starts conversion operation simultaneously with power supply, then the system responds quickly to power supply, but the ability to detect abnormalities in voltage detector and control device deteriorates
Solution Approach 1:
The delay controller delays the start of conversion operation by a predetermined time period after power supply begins. This preliminary delay allows the voltage detector and control device to be properly initialized and tested before actual conversion operations commence, enabling abnormality detection while maintaining eventual system responsiveness
2Reliability
If the converter delays conversion operation start by predetermined time, then the ability to detect abnormalities improves, but the system response time to power supply worsens
Solution Approach 1:
The delay is applied only during the initialization phase to enable proper testing and detection of abnormalities in the voltage detector and control device. After this preliminary period, the converter operates normally, minimizing the impact on overall system productivity while ensuring reliability through the initial detection window
Data Source
AI summary
According to one embodiment, an electric power conversion system includes a convertor, a detector, a delay controller, and a determinator. The detector is configured to detect information related to a voltage of electric power converted by the converter. The delay controller is configured to delay a conversion operation start of the converter by a first predetermined time with respect to a supply start time at which supply of the electric power is started. The determinator is configured to perform a first determination on the basis of a detection result detected by the detector before elapse of the first predetermined time from the supply start tune, and to perform a second determination on the basis of a detection result detected by the detector after the elapse of the first predetermined time from the supply start time.