Converter Arrangement Voltage Balancing Control
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Solution Overview
Problem
Existing converter arrangements face limitations due to asymmetry in memory module voltages, which reduces the effectiveness and usability of the memory array, leading to negative aging effects and capacity losses.
Innovation Solution
A control device is implemented to regulate and balance memory module voltages by exchanging data signals with the modules, ensuring balanced operation, extended service life, and efficient discharging through a central control unit and sub-units connected via data connections, using protocols like CAN or IEC 61850, and capable of managing supercapacitors or batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If memory modules are connected in series to increase voltage, then the voltage capability is improved, but voltage asymmetry between modules increases
Solution Approach 1:
The control device continuously monitors the voltage of each memory module through data signals and adjusts the charging/discharging of individual modules to maintain voltage balance. This feedback mechanism detects voltage deviations and implements corrective actions to prevent asymmetry from developing.
Solution Approach 2:
The system dynamically adjusts the operation of individual memory modules based on their real-time voltage states. By enabling independent control of each module's charging and discharging, the system adapts to changing conditions and maintains voltage symmetry throughout operation.
2Stability of the object's composition
If individual memory modules are independently controlled, then voltage balancing is improved, but control complexity increases
Solution Approach 1:
The control device is divided into a central control unit and distributed control units, each responsible for specific memory modules. This segmentation allows independent control of individual modules while distributing the control burden, managing complexity through modular architecture.
Solution Approach 2:
The control device performs multiple functions including voltage monitoring, balancing regulation, and coordination of memory module operations. By integrating these functions into a single multi-functional control system, the patent manages complexity while achieving comprehensive voltage management.
3Device complexity
If memory modules operate without balancing control, then device complexity is reduced, but service life and usability decrease
Solution Approach 1:
The control device proactively balances memory module voltages before significant asymmetry develops. By continuously monitoring and adjusting voltages in advance, the system prevents conditions that would lead to premature aging and capacity loss, extending service life through preventive maintenance.
Solution Approach 2:
The memory modules, through the control device, automatically regulate their own voltages without external intervention. The system self-corrects voltage imbalances and manages its own operation, eliminating the need for external balancing mechanisms and simplifying the overall system while extending service life.
Data Source
AI summary
The invention relates to a converter arrangement (1) comprising a converter (3) that has an AC voltage side for connection to an AC voltage system (2) as well as a DC voltage side, and comprising an accumulator assembly (8) which can be connected to the DC voltage side of the converter and which includes a plurality of electrically interconnected accumulator modules (23al-nm). The invention is characterized by a control device (20) for controlling accumulator module voltages, said control device being designed to exchange data signals with the accumulator modules.