Power Converter Current Sensor Abnormality Detection
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Solution Overview
Problem
The increasing output requirements for medical X-ray high voltage devices necessitate a higher number of primary windings in transformers, leading to issues with incorrect wiring and disconnection of cables, which can cause damage to the apparatus due to the complexity and thinness of the cables.
Innovation Solution
A power converter with a transformer having two or more primary windings connected in parallel, equipped with current sensors to detect abnormalities in current flow and a control unit to determine and address incorrect wiring or disconnection, ensuring safe operation by stopping the apparatus if abnormalities are detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of primary windings of the main transformer is increased to supply large current, then the current supply capability is improved, but the cable complexity and disconnection risk increase
Solution Approach 1:
The patent merges the detection functions for multiple primary windings into a single integrated control system. The control unit consolidates abnormality detection, identification, and response coordination for all primary windings, reducing the overall system complexity despite having multiple windings and cables.
Solution Approach 2:
The patent implements feedback mechanisms where detection units continuously monitor each primary winding and provide real-time information to the control unit. When abnormalities are detected, the control unit provides feedback by identifying the specific faulty winding and coordinating appropriate responses, enabling precise control without requiring complex manual monitoring of each cable.
2Power
If the number of primary windings of the main transformer is increased to supply large current, then the current supply capability is improved, but the risk of incorrect wiring and disconnection increases
Solution Approach 1:
The patent implements feedback mechanisms where detection units continuously monitor each primary winding and provide real-time information to the control unit. When abnormalities are detected, the control unit provides feedback by identifying the specific faulty winding and coordinating appropriate responses, enabling precise control without requiring complex manual monitoring of each cable.
Solution Approach 2:
The patent introduces detection units as intermediary components between the primary windings and the control unit. These detection units act as mediators that simplify the monitoring process by automatically detecting and reporting abnormalities, thereby improving wiring reliability without adding significant complexity to the overall system.
3Reliability
If connection name plates and protective tubes are added to prevent incorrect wiring and disconnection, then the wiring reliability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces mechanical prevention methods (connection name plates and protective tubes) with an electrical detection and control system. Instead of relying on physical guides and reinforcements, the system uses detection units to monitor current flow and a control unit to identify and respond to abnormalities, thereby improving wiring reliability through intelligent control rather than mechanical constraints.
Solution Approach 2:
The patent implements feedback mechanisms where detection units continuously monitor each primary winding and provide real-time information to the control unit. When abnormalities are detected, the control unit provides feedback by identifying the specific faulty winding and coordinating appropriate responses, enabling precise control without requiring complex manual monitoring of each cable.
4Reliability
If a mechanism to detect and stop operation on abnormality is implemented, then the safety is improved, but the device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where detection units continuously monitor each primary winding and provide real-time information to the control unit. When abnormalities are detected, the control unit provides feedback by identifying the specific faulty winding and coordinating appropriate responses, enabling precise control without requiring complex manual monitoring of each cable.
Solution Approach 2:
The patent introduces detection units as intermediary components between the primary windings and the control unit. These detection units act as mediators that simplify the monitoring process by automatically detecting and reporting abnormalities, thereby improving wiring reliability without adding significant complexity to the overall system.
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
The solution allows for the reliable supply of large currents while preventing damage from incorrect wiring or disconnection, ensuring the apparatus operates safely and effectively.
Implementation Method 1
an inverter which converts a DC output into an AC voltage of a predetermined frequency
Implementation Method 2
a high voltage generator which receives an output from output terminals of the inverter and boosts the output to a desired high DC voltage. The high voltage generator includes a transformer having a primary winding and a secondary winding
Data Source
AI summary
A power converter is configured to include an inverter which converts a DC output into an AC voltage of a predetermined frequency, and a high voltage generator which receives an output from output terminals of the inverter and boosts the output to a desired high DC voltage. The high voltage generator includes a transformer, and the primary windings of the transformer are connected to the output terminals of the inverter in parallel by conductive wires connected to both ends of each primary winding. Further, a current sensor is provided to detect a current flowing through each of the primary windings, and a control unit determines abnormalities of a path of the inverter and the primary windings on the basis of a value of the current sensor.