Switched-Mode Power Converter Parameter Estimation
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Solution Overview
Problem
Switched-mode power converters face performance reduction due to changing loads and component aging, as existing control methods struggle to accurately respond to these changes, leading to inefficiencies in power supply regulation.
Innovation Solution
A method and system for estimating component parameters in switched-mode power converters using sample variables, such as input and output currents and node voltages, processed through recursive least square processes to determine capacitance, inductance, and series resistance values, which are then used to improve controller feedback and switching module control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If programmed control methods are used in the controller, then the switching circuit can create desired regulated power, but the controller cannot respond to changing loads, reducing performance
Solution Approach 1:
The patent implements a feedback mechanism where the controller receives feedback signals from the switching circuit and uses these signals to adjust control parameters dynamically. This allows the controller to respond to changing loads while maintaining regulated power output, resolving the contradiction between reliable regulation and adaptability to load changes.
Solution Approach 2:
The control parameters in the controller are made dynamic rather than fixed, allowing them to change in response to operating conditions. This enables the system to adapt to varying loads while maintaining stable power regulation, addressing both reliability and adaptability requirements.
2Adaptability or versatility
If feedback mechanisms are added to cater for changing loads, then load adaptability improves, but component parameter changes due to aging or drift reduce efficiency
Solution Approach 1:
The system performs self-diagnosis and self-adjustment by monitoring component parameters and automatically compensating for aging or drift effects. This self-service capability maintains efficiency while preserving load adaptability, as the system corrects parameter deviations without external intervention.
Solution Approach 2:
The patent dynamically adjusts control parameters based on monitored component characteristics, compensating for aging and parametric drift. By adapting parameters in real-time, the system maintains optimal efficiency while preserving the feedback-based load adaptation capability.
3Device complexity
If component parameters are not monitored, then the system structure remains simple, but performance reduces due to aging and parametric drift
Solution Approach 1:
The patent replaces complex physical monitoring equipment with electronic sensing and computational methods. By using electronic sensors and digital signal processing to monitor component parameters, the system achieves reliable performance tracking with minimal structural complexity, avoiding the need for elaborate mechanical monitoring systems.
Data Source
AI summary
A system and a method for estimating component parameters relating to electric components of an electric circuit comprising the steps of receiving one or more sample variables associated with the electric circuit, applying the one or more sample variables to one or more component relationships associated with an arrangement of the electric components of the electric circuit, and processing the one or more component relationships with an approximation process to determine one or more estimated component parameters.