Multi-cell Power Supply Cell De-bypass Control
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Solution Overview
Problem
Multi-cell power supplies face inefficiencies when attempting to restore power cell functionality after a fault, as conventional methods require stopping the supply to de-bypass faulty cells, leading to downtime and reduced operational efficiency.
Innovation Solution
Implementing a method that allows for the selective de-bypassing of power cells without stopping the multi-cell power supply by determining if the fault was caused by a temporary operating condition and verifying the cell's functionality, using a controller to adjust phase angles and reconfigure the power cell array to safely de-bypass the cell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to restore power cell functionality after a fault, then the faulty cell can be de-bypassed, but the power supply must be stopped, leading to downtime and reduced operational efficiency
Solution Approach 1:
The system dynamically adjusts the operational state of power cells based on real-time fault assessment. The controller evaluates whether a fault is temporary or permanent and dynamically transitions cells between bypassed and active states without requiring system shutdown, enabling adaptive restoration of functionality while maintaining continuous operation.
Solution Approach 2:
The controller performs preliminary assessment of fault conditions before attempting to de-bypass a cell. By evaluating fault characteristics and determining cell readiness in advance, the system prepares for safe reintegration of the power cell into the circuit, preventing premature restoration that could cause damage or instability.
2Reliability
If the power supply is stopped to de-bypass a faulty power cell, then the cell can be safely restored, but system downtime increases
Solution Approach 1:
The system maintains continuous power supply operation during the power cell restoration process. By implementing real-time monitoring and control mechanisms, the controller enables de-bypassing and reintegration of faulty cells without interrupting the overall power supply function, ensuring uninterrupted useful action throughout the restoration process.
Solution Approach 2:
The controller acts as an intermediary between the faulty power cell and the power supply system. It manages the transition process by coordinating voltage balancing, current redistribution, and synchronization operations, enabling safe cell reintegration while maintaining system continuity without requiring complete shutdown.
3Productivity
If real-time fault assessment and de-bypassing control are implemented, then operational efficiency is maintained, but device complexity increases
Solution Approach 1:
The controller implements continuous feedback monitoring of power cell voltage, current, and fault status. By real-time assessment of cell conditions and system state, the controller dynamically determines when and how to de-bypass cells, enabling automated decision-making that maintains operational efficiency without requiring complex manual intervention or oversimplified control logic.
Solution Approach 2:
The controller performs multiple functions including fault detection, cell assessment, voltage balancing, current management, and de-bypass control within a single integrated device. By consolidating these functions, the system achieves comprehensive power cell management without proportionally increasing device complexity, as the controller leverages shared resources and coordinated operations across its multifunctional capabilities.
Data Source
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AI summary
A method is provided for operating a multi-cell power supply that includes multiple series-connected power cells in each of multiple legs. Each power cell includes a bypass device that may be used to selectively bypass and de-bypass the power cell. After a first power cell faults and is bypassed as a result of the fault, the method includes de-bypassing the first power cell without stopping the multi-cell power supply if the first power cell fault was caused by a predetermined operating condition. Numerous other aspects are provided.