Power Conversion Circuit Dynamic Mode Selection
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Solution Overview
Problem
Power conversion circuits that convert DC to AC or vice versa are notoriously inefficient, typically achieving efficiencies of 90% or less, necessitating a method and apparatus for improved power conversion.
Innovation Solution
A power conversion circuit with a controller that dynamically selects between non-interleaved and interleaved modes to optimize the conversion process, utilizing flyback modes such as regular, quasi-resonant, and interleaved flyback modes based on input voltage and output current conditions, allowing for efficient conversion of DC to AC power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional power conversion circuit is used to convert DC to AC or vice versa, then the conversion can be performed, but the efficiency is low (90% or less)
Solution Approach 1:
The patent implements dynamic mode selection between non-interleaved and interleaved operation modes based on real-time operating conditions. The controller dynamically switches between regular flyback mode, quasi-resonant flyback mode, and interleaved flyback mode to optimize efficiency across different power levels and voltage conditions, thereby resolving the contradiction between maintaining simplicity and improving efficiency
2Loss of energy
If dynamic mode selection is implemented to optimize power conversion efficiency, then efficiency improves, but control complexity increases
Solution Approach 1:
The patent changes operational parameters dynamically by switching between different flyback modes based on voltage and current conditions. The controller monitors operating parameters and adjusts the conversion mode accordingly, implementing parameter changes to optimize efficiency while managing control complexity through condition-based decision logic
3Productivity
If interleaved mode is used for power conversion, then efficiency improves under certain conditions, but the circuit operation becomes more complex
Solution Approach 1:
The patent makes the circuit operation dynamic by enabling interleaved mode only when operating conditions warrant the efficiency benefits. The controller dynamically selects between simple non-interleaved operation and complex interleaved operation based on real-time voltage and current measurements, optimizing productivity while managing operational complexity
Data Source
AI summary
A method and apparatus for converting a first power to a second power. In one embodiment the apparatus comprises a power conversion circuit for receiving the first power; and a controller, coupled to the power conversion circuit, for dynamically selecting between a non-interleaved mode and an interleaved mode for operating the power conversion circuit to convert the first power to the second power.