Resonant Core Power Supply Frequency Tracking
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Solution Overview
Problem
Conventional linear power supplies lack efficiency and flexibility in providing stable and conditioned electric power, particularly in matching the resonant frequency of the load with the excitation signal frequency, leading to potential core saturation and reduced performance.
Innovation Solution
A resonant core power supply is designed with a magnetic core, excitation, resonant, and load windings, along with a tank circuit and feedback mechanisms to maintain the phase, amplitude, and waveform of the excitation signal, ensuring the resonant frequency matches the excitation signal frequency and providing stable power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional linear power supplies are used, then simplicity of design is maintained, but efficiency and flexibility in providing stable electric power deteriorates
Solution Approach 1:
The patent applies resonance principles by tuning the tank circuit (LC circuit) to resonate at a specific frequency that matches the excitation signal frequency. This resonant operation allows the magnetic core to operate efficiently at optimized flux levels, improving power transfer efficiency while maintaining a relatively simple overall design structure.
Solution Approach 2:
The patent implements feedback mechanisms that dynamically adjust excitation signal parameters (phase, amplitude, frequency) based on tank circuit responses. This allows the system to adapt to varying load conditions and maintain optimal operating points, thereby improving efficiency and flexibility without requiring completely complex redesigns.
2Reliability
If resonant frequency is not matched with excitation signal frequency, then device simplicity is maintained, but core saturation occurs and performance reduces
Solution Approach 1:
The patent employs feedback from the tank circuit to the excitation signal generator, creating a phase-locked loop or frequency-locked loop system. This feedback mechanism automatically adjusts the excitation frequency to match the tank circuit's resonant frequency, ensuring reliable operation and preventing core saturation without requiring manual frequency matching or complex external tuning devices.
Solution Approach 2:
The system dynamically adjusts the excitation frequency and phase in real-time based on load conditions and tank circuit resonance characteristics. This dynamic adaptation ensures continuous optimal performance across varying operating conditions while maintaining relatively simple hardware through software or control circuitry-based frequency adjustment.
3Productivity
If dynamic adjustment of resonant frequency is implemented, then operational efficiency is enhanced, but control system complexity increases
Solution Approach 1:
The patent uses feedback signals from the tank circuit (voltage across capacitor, current through inductor) to automatically adjust excitation parameters. This closed-loop control enables dynamic optimization of resonant frequency and flux levels, improving operational efficiency while keeping control complexity manageable through straightforward feedback measurement and adjustment mechanisms.
Solution Approach 2:
The system performs self-adjustment of excitation frequency and phase based on inherent tank circuit responses without requiring external control intervention. The feedback mechanism allows the power supply to automatically optimize its own operation, enhancing efficiency while minimizing the need for complex external control systems or manual tuning.
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
The resonant core power supply effectively delivers stable, conditioned, and filtered electric power by dynamically adjusting the resonant frequency and flux levels, preventing core saturation and enhancing operational efficiency.
Implementation Method 1
the excitation winding for receiving an excitation signal and creating a first flux flow
Implementation Method 2
the first flux flow passing through the resonant winding and inducing a voltage therein
Implementation Method 3
the resonant winding connected to one or more capacitors including a resonant capacitor to form a tank circuit having a resonant frequency FRES matched with the excitation signal frequency
Implementation Method 4
a third flux flow passing through a load winding and inducing a voltage therein; for powering an electrical load
Data Source
AI summary
A resonant core power supply includes a core with excitation, resonant, and load windings where the resonant winding is coupled to a tank circuit and a controller manipulates the phase, amplitude and waveform of an excitation signal applied to the excitation winding.