Converter Parameter Table Adaptation for Harmonic Performance
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Solution Overview
Problem
Existing electrical devices, such as LED drivers, face performance issues due to fixed parameter tables that do not adapt to varying load conditions, leading to suboptimal performance and harmonic distortion limitations.
Innovation Solution
The electrical device self-adapts by calculating and updating parameter values in its table based on input parameters like power, voltage, and frequency, optimizing performance evaluation parameters such as Power Factor, Total Harmonic Distortion, and Harmonics, allowing for improved performance across different conditions without hardware additions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed parameter value table is used for the converter during development, then the device structure remains simple, but the performance is suboptimal under varying load conditions and harmonic performance limits the operation range
Solution Approach 1:
The converter automatically adjusts its own operating parameters by selecting appropriate parameter values from the table based on detected input voltage and load conditions, eliminating the need for manual external adjustment and enabling adaptive optimization across different operating scenarios
Solution Approach 2:
The converter dynamically changes its operating parameters (such as switching frequency, duty cycle, or component values) by selecting different entries from the pre-stored parameter value table, allowing optimization of performance metrics like power factor and harmonic distortion for different input voltages and load conditions
2Reliability
If manual adjustment of parameter values in the table is performed under different load conditions, then optimal performance can be achieved for each condition, but the development time is significantly increased
Solution Approach 1:
A comprehensive parameter value table is pre-calculated and stored during the design phase, containing optimized parameter sets for various input voltages and load conditions. This preliminary preparation eliminates the need for time-consuming manual adjustments during development and testing, as the converter can directly select from pre-optimized values
Solution Approach 2:
The converter detects its actual operating conditions (input voltage, load current) and uses this feedback to automatically select the most appropriate parameter values from the table, ensuring optimal performance without requiring manual intervention or iterative adjustment during development
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This self-adaptive approach enables the electrical device to achieve optimal performance and extended operation range by dynamically adjusting parameters, enhancing harmonic performance without additional hardware or electronic elements.
Implementation Method 1
an inductance or coil to which a rectified AC voltage is supplied is charged with energy or discharged by a controllable switch being switched on and off
Data Source
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AI summary
A method and apparatus of adjusting parameter for an electrical device. The method of adjusting parameter for an electrical device, the electrical device comprising a converter, the method including: calculating a performance evaluation parameter of the electrical device, when the converter using a parameter value table for running; adjusting at least one parameter value in the parameter value table of the converter according to an input parameter so as obtain the optimized performance evaluation parameter of the electrical device and use the adjusted parameter value table corresponding to the optimized performance evaluation parameter for running. Therefore, the self adapting parameter in the table will be enable to find the best performance for different input and load conditions and better performance of Harmonics will not limit the operation range.