Reconfigurable Power Converter Pole Compensation for Loop Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power converters face challenges in maintaining stability and desired characteristics when the forward transfer function changes unpredictably, requiring frequent reconfiguration of feedback modules, which is difficult without knowledge of the new transfer function.
Innovation Solution
The solution involves reconfiguring a switched-capacitor circuit and its integrated compensation circuit to maintain a constant loop transfer function, using reconfiguration logic that adjusts the compensator to compensate for changes in the forward transfer function, allowing the power converter to adapt dynamically without needing external compensation circuit reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the switched-capacitor circuit is reconfigured to change voltage-transformation ratio, then the adaptability of the power converter is improved, but the forward transfer function changes which requires reconfiguration of the compensation circuit
Solution Approach 1:
The patent merges the switched-capacitor circuit and compensation circuit into a single integrated unit where the compensation circuit is built into the switched-capacitor circuit. This integration ensures that when the voltage-transformation ratio changes, the compensation circuit automatically adapts without requiring separate reconfiguration, thus resolving the contradiction between adaptability and device complexity
Solution Approach 2:
The integrated compensation circuit automatically compensates for changes in the forward transfer function when the switched-capacitor circuit is reconfigured. The compensation circuit monitors and adjusts itself based on the configuration state, eliminating the need for external intervention or separate reconfiguration processes
2Adaptability or versatility
If the forward transfer function changes unpredictably, then the adaptability of the power converter is improved, but the stability control becomes difficult requiring frequent feedback module reconfiguration
Solution Approach 1:
The patent employs a feedback mechanism where the integrated compensation circuit continuously monitors the forward transfer function changes and automatically adjusts the compensation parameters. This feedback loop maintains stability even when the voltage-transformation ratio changes unpredictably, resolving the contradiction between adaptability and reliability
Solution Approach 2:
The compensation circuit is designed to be dynamic, automatically adapting its parameters in response to changes in the switched-capacitor circuit configuration. This dynamic behavior allows the system to maintain stability while responding to unpredictable changes in the forward transfer function
3Adaptability or versatility
If external compensation circuits are used, then the design flexibility is improved, but the ease of operation deteriorates due to frequent reconfiguration requirements
Solution Approach 1:
By integrating the compensation circuit into the switched-capacitor circuit, the patent eliminates the need for separate external compensation circuits. This integration maintains design flexibility while automatically handling reconfiguration needs, thus improving ease of operation by eliminating frequent manual reconfiguration requirements
Data Source
AI summary
In a power converter that includes a switched-capacitor circuit connected to a switched-inductor circuit, reconfiguration logic causes the switched-capacitor circuit to transition between first and second switched-capacitor configurations with different voltage-transformation ratios. A compensator compensates for a change in the power converter's forward-transfer function that would otherwise result from the transition between the two switched-capacitor configurations.