Vibration Power Generation Impedance Control Switch
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Solution Overview
Problem
Existing vibration power generation systems face challenges in appropriate activation due to variations in environmental vibration frequencies and impedances, leading to inefficient power generation.
Innovation Solution
A power generation system that includes a vibration power generator, a rectifying and smoothing circuit, a converter, a voltage measurement unit, and a switch, where the switch is activated when the measured voltage reaches a reference voltage, ensuring efficient power supply to a load by optimizing impedance matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the vibration power generator is activated immediately upon detection of vibration, then the system responds quickly to environmental energy sources, but power generation efficiency is reduced due to improper impedance matching during startup
Solution Approach 1:
The system performs preliminary impedance adjustment by controlling the switch to connect or disconnect the rectifying and smoothing circuit before full power generation begins. This preliminary action ensures that when the vibration power generator starts operating, the impedance is already optimized for maximum power transfer, preventing efficiency loss during the critical startup phase while maintaining quick response to vibration detection
Solution Approach 2:
The system dynamically adjusts the impedance of the rectifying and smoothing circuit by controlling the switch state based on real-time operating conditions. The controller monitors voltage output and vibration characteristics, continuously optimizing the impedance match between the vibration power generator and the rectifying circuit to maintain maximum power generation efficiency across varying vibration frequencies and amplitudes
2Productivity
If additional switches are added to control activation timing, then power generation efficiency is improved through better impedance matching, but device complexity increases
Solution Approach 1:
The existing switch in the circuit is designed to serve multiple functions: it acts as both the main power switch and the impedance control switch. By controlling this single switch to connect or disconnect the rectifying and smoothing circuit, the system achieves both power generation control and impedance matching optimization without adding extra switching components, thereby maintaining system simplicity while improving efficiency
Solution Approach 2:
The control functions for activation timing and impedance matching are merged into a single control strategy. The controller integrates the detection of vibration presence, the timing of activation, and the impedance optimization into one unified control mechanism, eliminating the need for separate control circuits or additional switches that would increase system complexity
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
Facilitates stable and efficient activation of the vibration power generation system by ensuring the impedance of the rectifying and smoothing circuit reaches an appropriate value, maximizing output power and reducing the need for additional activation switches.
Implementation Method 1
A vibration power generator generates power utilizing environmental vibration
Implementation Method 2
a rectifying and smoothing circuit 20, transforms the smoothed DC power
Data Source
Figure 1~2
Figure 3
Figure 4~5B
AI summary
A power generation system (1) in an arrangement includes a power generator (10), a rectifying and smoothing circuit (20), a converter (30), a voltage measurement unit (40), and a switch (70). The power generator outputs AC power. The rectifying and smoothing circuit converts the AC power to DC power and smooths the DC power. The voltage measurement unit measures an average voltage of the AC power or a voltage of the smoothed DC power. The converter transforms the smoothed DC power. The switch is disposed between the rectifying and smoothing circuit and the converter, and becomes an ON state when the measured voltage becomes a reference voltage or higher.