Dynamic Power Converter Switching for Real-Time Efficiency Control
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Solution Overview
Problem
Conventional power converters suffer from low efficiency, large size, and non-linear characteristics, failing to adapt to varying operating conditions and efficiently utilize the input waveform.
Innovation Solution
A power converter that dynamically adjusts switching based on real-time efficiency measurements, sampling and calculating voltage and current values to optimize the conversion process by selectively harvesting portions of the input waveform.
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 switching frequency and duty cycle based on real-time operating conditions. The controller continuously monitors input voltage, output voltage, and load conditions to optimize the switching parameters, enabling the power converter to adapt dynamically rather than operating at fixed parameters. This resolves the contradiction by allowing efficient energy transfer while maintaining stable output through active control.
Solution Approach 2:
The patent incorporates feedback mechanisms where the controller receives information about input voltage, output voltage, and operating conditions to adjust switching parameters. This closed-loop control enables the system to maintain stable DC output while optimizing power conversion efficiency by responding to actual operating conditions rather than relying on fixed linear regulation.
2Device complexity
If linear power supply with transformer is used, then voltage regulation is simple, but device size is large and cost is high
Solution Approach 1:
The patent replaces the traditional linear transformer-based voltage regulation with a switch-mode power converter that uses electronic switching devices (MOSFETs or IGBTs) and high-frequency operation. This substitution eliminates the need for large low-frequency transformers, dramatically reducing device size while maintaining voltage regulation capability through electronic control of switching parameters.
Solution Approach 2:
The patent changes the operating frequency parameter to high frequency, which allows the use of much smaller magnetic components. By operating at high switching frequencies instead of line frequency, the transformer and inductor sizes are reduced proportionally, solving the size problem while maintaining regulation through dynamic parameter adjustment.
3Volume of moving object
If switch-mode power supply is used, then device size is reduced, but non-linear characteristics introduce harmonics and power factor problems
Solution Approach 1:
The patent dynamically adjusts switching frequency and duty cycle based on real-time monitoring of input voltage and current conditions. This dynamic control enables the system to optimize power factor and minimize harmonics by adapting switching parameters to match the instantaneous operating conditions, rather than using fixed switching patterns that generate excessive harmonics.
Solution Approach 2:
The patent incorporates feedback control where the controller monitors input current and adjusts switching parameters to maintain unity power factor and minimize harmonics. This active power factor correction through feedback control resolves the contradiction by enabling small device size while eliminating the harmful non-linear effects of conventional switch-mode supplies.
4Loss of energy
If conventional switch-mode power supply with static chopping is used, then power conversion is efficient, but system cannot adapt to varying operating conditions
Solution Approach 1:
The patent implements dynamic adjustment of switching frequency and duty cycle based on real-time operating conditions including input voltage variations, output load changes, and temperature conditions. This dynamic adaptation maintains high efficiency across varying operating conditions by continuously optimizing switching parameters, resolving the contradiction between efficiency and adaptability.
Solution Approach 2:
The patent incorporates multiple feedback loops that monitor input voltage, output voltage, current, and operating conditions to continuously adjust switching parameters. This feedback control enables the system to maintain high efficiency while adapting to varying operating conditions, eliminating the rigidity of static chopping schemes.
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.