Induction Power Supply Phase Shift Control
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Solution Overview
Problem
The existing induction type power supply systems face challenges in achieving fast and stable power adjustments, leading to inefficient power control and increased power loss, particularly when handling varying loads and operating at higher frequencies, which results in wear and tear on driving elements.
Innovation Solution
The method involves using a supplying-end module with a processor, delay generator, and power driver units to adjust the phase shift between driving signals, detecting peak locations and deviation rates to optimize output power, allowing for rapid power adjustments and reduced power loss by varying the phase relations of the driving signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the operating frequency is adjusted to control output power, then power control is achieved, but the response time is slow and stability is poor
Solution Approach 1:
The patent changes the phase shift quantity between driving signals as a control parameter instead of adjusting operating frequency. This allows rapid power adjustment by modifying phase relationships rather than frequency, achieving both fast response and stable output power control.
Solution Approach 2:
The patent replaces the frequency-based control mechanism with a phase-shift-based control mechanism. By using phase shift quantity as the control variable, the system achieves faster response time while maintaining power control capability, eliminating the slow response inherent in frequency adjustment methods.
2Loss of energy
If the operating frequency is increased to reduce output power, then power consumption is reduced, but the life of driving elements decreases due to wear and tear
Solution Approach 1:
The patent changes the control parameter from operating frequency to phase shift quantity. By adjusting the phase shift between driving signals, the system can reduce output power and power loss without increasing operating frequency, thereby avoiding the wear and tear that would reduce the life of driving elements.
3Power
If multiple communication exchanges are performed to adjust power, then accurate power matching is achieved, but the process is time consuming
Solution Approach 1:
The patent replaces the multi-exchange communication-based power adjustment method with a direct phase shift control method. By detecting peak locations and calculating peak deviation rates, the system can rapidly determine the appropriate phase shift quantity and adjust power in a single step, achieving both accurate power matching and fast response without repeated communication exchanges.
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 approach enables faster and more stable power adjustments, reducing power loss and extending the life of driving elements by accurately adapting output power to load variations through phase control of the driving signals.
Implementation Method 1
The power supplying terminal applies a driver circuit to drive a supplying-end coil to generate resonance, in order to send electromagnetic waves
Implementation Method 2
The power supplying terminal applies a driver circuit to drive a supplying-end coil to generate resonance, in order to send electromagnetic waves
Implementation Method 3
A coil of the power receiving terminal may receive the electromagnetic waves and perform power conversion to generate DC power
Data Source
AI summary
A method is used for a supplying-end module of an induction type power supply system, for adjusting output power of the induction type power supply system. The method includes driving a supplying-end coil of the supplying-end module by using a first driving signal and a second driving signal, and setting a phase shift quantity between the first driving signal and the second driving signal; detecting a coil signal of the supplying-end coil to determine a peak location of the coil signal; determining a peak deviation rate of the peak location according to a starting point of a period of the second driving signal and a zero load point; and adjusting the phase shift quantity according to the peak deviation rate, in order to adjust the output power.