Harmonic Component Reduction Unit for Wireless Power Supply
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Solution Overview
Problem
Wireless power transmission systems face efficiency degradation due to unnecessary frequency components in AC power, particularly harmonic frequencies, which lead to power loss and reduced transmission efficiency.
Innovation Solution
A power supply device with a DC power supply unit, an AC power generating unit, and a harmonic component reduction unit that increases input impedance against harmonic frequencies, preventing unnecessary power consumption and enhancing transmission efficiency by reducing the magnitude of harmonic frequency components in AC power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If DC power is converted into AC power using conventional methods, then AC power can be supplied to the wireless power transmitting apparatus, but power loss occurs during conversion reducing transmission efficiency
Solution Approach 1:
The invention extracts and removes the harmful harmonic frequency components from the AC power signal generated during DC to AC conversion. By using a harmonic component reduction unit that specifically targets and eliminates these unnecessary frequency components, the system reduces power loss while maintaining the essential power transmission function.
Solution Approach 2:
The invention converts the harmful effect of harmonic frequency components into a benefit by using them as indicators of inefficiency. The harmonic component reduction unit identifies these components and eliminates them, transforming the power loss they cause into improved transmission efficiency. The harmonic components themselves become useful information for optimizing the power conversion process.
2Power
If AC power containing harmonic frequency components is transmitted, then power can be delivered to the wireless power transmitting apparatus, but unnecessary power consumption occurs reducing overall efficiency
Solution Approach 1:
The invention introduces a harmonic component reduction unit as an intermediary between the AC power generating unit and the wireless power transmitting apparatus. This intermediary component filters out the harmful harmonic frequency components while allowing the essential power transmission to proceed, thus mediating between power delivery requirements and energy efficiency goals.
3Productivity
If conventional AC power generation is used, then power can be supplied to the wireless power transmission system, but power transmission efficiency is degraded due to unnecessary frequency components
Solution Approach 1:
The invention extracts and removes the harmful harmonic frequency components from the AC power signal generated during DC to AC conversion. By using a harmonic component reduction unit that specifically targets and eliminates these unnecessary frequency components, the system reduces power loss while maintaining the essential power transmission function.
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 solution effectively maximizes power transmission efficiency by minimizing power loss and enhancing the efficiency of electromagnetic induction or resonance-type wireless power transmission systems by reducing harmonic frequency components, leading to improved power delivery and reduced energy wastage.
Implementation Method 1
an AC power generating unit to generate AC power by using the DC power
Implementation Method 2
a harmonic component reduction unit to reduce a magnitude of power for a harmonic frequency component in the generated AC power
Implementation Method 3
a wireless power transmission system based on the electromagnetic induction scheme and the resonance scheme wirelessly transmits electrical signals generated from a transmitter and a receiver through a coil
Implementation Method 4
the resonance scheme wirelessly transmits electrical signals generated from a transmitter and a receiver through a coil
Data Source
AI summary
A power supply device for a wireless power transmitting apparatus according to an embodiment of the present invention includes a power supply unit to supply DC power, an AC power generating unit to generate AC power by using the DC power, and a harmonic component reduction unit to reduce a magnitude of power for a harmonic frequency component in the generated AC power.