Drive-Sense Circuit Adaptation for Power Supply Ripple Control
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Solution Overview
Problem
Current power supply systems face challenges in efficiently managing and conditioning power signals, particularly in sensing and regulating power supplies to effectively address variations and deleterious effects such as voltage sag and harmonic glitches, which can impact the quality of power delivered to loads.
Innovation Solution
The implementation of a drive-sense circuit (DSC) that simultaneously drives and senses power signals, using a power source circuit and a power signal change detection circuit to detect changes in power signals and generate representative signals, allowing for adaptive processing and conditioning to counteract adverse effects, thereby improving power supply quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power supply system uses conventional sensing and regulation methods, then the system structure is simple, but it cannot effectively detect and counteract voltage sag and harmonic glitches
Solution Approach 1:
The patent combines the drive function and sense function into a single integrated drive-sense circuit. The DSC simultaneously drives the power supply and senses output signals, merging multiple functions into one circuit to improve power supply quality without proportionally increasing complexity
Solution Approach 2:
The patent implements a feedback mechanism where the drive-sense circuit monitors output signals and uses the information to adaptively adjust its driving action. This feedback loop enables the system to detect and counteract voltage sag and harmonic glitches by comparing actual output with desired output and making real-time corrections
2Reliability
If the power supply system uses adaptive processing based on output signal monitoring, then it can reduce deleterious effects like ripple and voltage sag, but the processing complexity increases
Solution Approach 1:
The drive-sense circuit performs self-adjustment by monitoring its own output signals and automatically adapting its driving action to counteract detected deleterious effects. The system serves itself by using its own output monitoring information to regulate its performance without requiring external complex control systems
Solution Approach 2:
The patent changes the driving parameters of the power supply based on monitored output signal characteristics. By dynamically adjusting driving action parameters in response to detected conditions like voltage sag or harmonic content, the system adapts to maintain stable power delivery without requiring complex additional hardware
Data Source
AI summary
A power supply signal conditioning system includes a power supply, one or more loads, and a drive-sense circuit (DSC). The power supply is operably coupled to one or more loads. When enabled, the power supply configured to output a power supply signal having a DC (direct current) voltage component and a ripple voltage component that is based on conversion of an AC (alternating current) signal in accordance with generating the power supply signal. The DSC is operably coupled to the power supply. When enabled, the DSC is configured simultaneously to sense the power supply signal and, based on sensing of the power supply signal, adaptively to process the power supply signal in accordance with reducing or eliminating the ripple voltage component of the power supply signal to generate a conditioned power supply signal to service the one or more loads.