Synchronized Dividing Modules for Stable DC Voltage Conversion
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Solution Overview
Problem
In DC voltage converters, independent operation of multiple dividing modules leads to potentially harmful oscillations in output voltage, which are not sufficiently mitigated by interleaving their operation times.
Innovation Solution
Synchronizing the operation of dividing modules by using a shared error signal stored over each dividing period and producing synchronization signals to control each module in an interleaved manner, ensuring all modules operate with the same error signal and produce a stable output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If multiple dividing modules are used in parallel to handle significant intensities and powers, then heat dissipation is optimized, but harmful oscillations of the output voltage occur due to independent operation of each module
Solution Approach 1:
A single error module generates a common error signal that is distributed to all dividing modules, creating a centralized feedback mechanism. This ensures all modules respond to the same voltage error information, coordinating their operation to eliminate oscillations while maintaining the parallel configuration for heat dissipation management.
Solution Approach 2:
The error signal generation function is merged into a single shared error module that serves all dividing modules. This consolidation creates a unified control reference that synchronizes the operation of multiple parallel modules, resolving the oscillation problem caused by independent operation while preserving the benefits of parallel architecture.
2Object-affected harmful factors
If interleaving operation times of dividing modules is implemented, then some reduction in output voltage oscillations is achieved, but the oscillations are not sufficiently reduced
Solution Approach 1:
The centralized error module provides real-time feedback about the actual output voltage deviation from the reference, enabling all dividing modules to adjust their operation based on the current voltage state. This dynamic coordination goes beyond simple time-interleaving by ensuring all modules respond to the same voltage error conditions, achieving sufficient oscillation reduction for reliable operation.
Data Source
AI summary
Disclosed is a DC voltage converter, including a plurality of dividing modules positioned in parallel and synchronized in an interleaved manner, all the dividing modules being controlled by one and the same error signal sampled for each dividing period.