Power Supply Switching Control for Voltage Imbalance Suppression
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Solution Overview
Problem
Existing electrical power supply systems face issues with excessive electrical current flow due to voltage differences between connected electrical power storage devices, which can lead to system instability.
Innovation Solution
The system employs switching devices and reverse flow prevention devices to manage voltage differences between electrical power storage devices, ensuring controlled electrical connections and disconnections based on voltage levels, and includes a control unit to regulate these switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple electrical power storage devices are connected in parallel to supply power to different load devices, then the power supply capacity and versatility are improved, but voltage differences between the storage devices can cause excessive electrical current flow and system instability
Solution Approach 1:
A control unit is introduced as an intermediary between the multiple electrical power storage devices and the load devices. The control unit monitors voltage levels of each storage device and selectively connects them to loads based on voltage differences, preventing excessive current flow while maintaining power supply capacity. This mediator coordinates the operation of switching devices to ensure stable system operation.
Solution Approach 2:
The system dynamically adjusts the connection states of switching devices based on real-time voltage conditions. The control unit continuously monitors voltage levels and changes the operational state of switching devices to connect or disconnect specific power storage devices from loads, adapting the power supply configuration to current voltage differences and preventing instability.
2Manufacturing precision
If switching devices are used to control connections between power storage devices and loads, then the control precision over electrical current is improved, but the device complexity increases
Solution Approach 1:
The control system is segmented into modular components: a control unit that monitors voltage levels and multiple switching devices that execute connection/disconnection actions. Each switching device independently controls the connection state of specific power storage devices to specific loads based on control signals, dividing the complex control function into manageable segments that simplify overall system design and implementation.
Data Source
AI summary
In an electrical power supply system, when a terminal voltage of a first electrical power storage device is higher than that of a second electrical power storage device, an electrical power generating device and a first load device are electrically disconnected, and the electrical power generating device and the first electrical power storage device are electrically disconnected, thereby charging a smoothing capacitor of the first load device by the electrical power supplied from the first electrical power storage device, and the electrical power generating device and a second load device are electrically connected, and the electrical power generating device and the second electrical power storage device are electrically connected, thereby charging a smoothing capacitor of the electrical power generating device and a smoothing capacitor of the second load device by the electrical power supplied from the second electrical power storage device.