Dynamic Power Converter Switching for Efficiency and Harmonic Control
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Solution Overview
Problem
Conventional power converters suffer from low efficiency, large size, and non-linear characteristics that introduce harmonics and power factor issues, failing to adapt to varying operating conditions and efficiently utilize input waveforms.
Innovation Solution
A power converter that dynamically adjusts switching based on real-time efficiency measurements, operating factors, and conditions, optimizing the selection and size of input power portions to enhance efficiency and maintain operating parameters within acceptable thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If linear power supply is used to step down AC voltage, then output voltage is stable and clean DC, but power conversion efficiency is low and transformer size is large
Solution Approach 1:
The patent implements dynamic adjustment of the power converter operating parameters based on real-time efficiency measurements. The system continuously monitors efficiency and adjusts switching frequency, duty cycle, and other operating parameters to optimize power conversion efficiency while maintaining stable output voltage, resolving the contradiction between reliability and energy loss.
Solution Approach 2:
The system changes operating parameters dynamically by adjusting switching frequency and duty cycle based on measured efficiency. This allows the power converter to operate at optimal efficiency points while maintaining stable DC output, addressing both the reliability requirement and the energy loss problem.
2Loss of energy
If switch-mode power supply is used for AC to DC conversion, then power conversion efficiency is improved and form factor is reduced, but non-linear characteristics introduce harmonics and power factor problems
Solution Approach 1:
The patent employs feedback mechanisms where real-time efficiency measurements are used to adjust operating parameters. This feedback loop allows the system to maintain high efficiency while dynamically adjusting to minimize harmonic generation and improve power factor, resolving the contradiction between efficiency improvement and harmful factor generation.
Solution Approach 2:
The system dynamically adjusts switching characteristics based on real-time measurements, allowing it to maintain high efficiency while adapting to prevent harmonic generation and power factor degradation, thus resolving the contradiction between efficiency and harmful factors.
3Device complexity
If conventional power converter uses static chopping procedure, then implementation is simple, but system cannot adapt to varying operating conditions and efficiency is suboptimal
Solution Approach 1:
The patent transforms the static chopping procedure into a dynamic system that continuously adjusts based on real-time efficiency measurements. The system adapts switching frequency, duty cycle, and other parameters according to actual operating conditions, maintaining simplicity while achieving adaptability through automated feedback-based adjustments.
Solution Approach 2:
The power converter performs self-adjustment by automatically modifying its operating parameters based on measured efficiency without external intervention. This self-service capability enables the system to adapt to varying conditions while maintaining operational simplicity, resolving the contradiction between complexity and adaptability.
Data Source
AI summary
A power converter and a method of operation thereof is disclosed including an input, an output, a sensor unit, a switched power converter, and a processor module. The power converter may convert an input power into an output power. The power converter may sense real-time measurements of the input power and the output power to determine a real-time calculated efficiency. The power converter may chop the input power into sized and positioned portions of the input power based on a plurality of determined operating parameters. The power converter may determine the operating parameters based on the real-time calculated efficiency and on a plurality of other operating factors/conditions.