LED Lamp Variable Inductance Current Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
LED lamps face challenges when replacing fluorescent lamps, as they require specific compatibility with different types of ballasts, leading to unstable current flow and increased implementation costs due to the need for selective LED lamp selection and circuit modifications.
Innovation Solution
An LED lamp with a rectifier circuit, variable inductance unit, current detection unit, and inductance control unit that adjusts inductance values based on detected current levels to stabilize current flow within a predetermined range, compatible with constant power regulation inverter type ballasts, eliminating the need for additional circuit modifications or ballast changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lamps are mounted in constant power regulation inverter type ballasts, then power consumption is reduced and efficiency is improved, but current flow becomes unstable and falls outside predetermined ranges
Solution Approach 1:
The patent applies dynamics by making the inductance value variable rather than fixed. The inductance value is dynamically adjusted based on the detected current flow magnitude, allowing the system to adapt to different operating conditions and maintain stable current flow within predetermined ranges while operating with constant power regulation inverter type ballasts.
Solution Approach 2:
The patent implements feedback by detecting the magnitude of current flow through the LED unit and using this information to control the variable inductance unit. This closed-loop feedback mechanism ensures that the inductance value is continuously adjusted to maintain stable current flow, resolving the instability issue while preserving the energy efficiency benefits.
2Reliability
If different LED lamps are selected for different ballast types, then current flow stability is improved, but device complexity and implementation costs increase
Solution Approach 1:
The patent achieves universality by designing an LED lamp that can operate stably with different ballast types, particularly constant power regulation inverter type ballasts. The variable inductance unit with feedback control enables a single LED lamp design to adapt to various ballast configurations, eliminating the need for selective lamp matching and reducing implementation complexity.
3Reliability
If circuit modifications are made to achieve stable current flow, then current flow stability is improved, but ease of operation and implementation simplicity deteriorate
Solution Approach 1:
The patent applies self-service by enabling the LED lamp to automatically regulate its own current flow through the variable inductance unit and feedback control mechanism. The system self-adjusts the inductance value based on detected current magnitude, eliminating the need for external circuit modifications or manual adjustments, thereby maintaining implementation simplicity while achieving current flow stability.
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 solution allows for stable current flow in LED lamps across various ballast types, simplifying implementation and reducing costs by eliminating the need for selective lamp and circuit adjustments, facilitating broader market adoption of LED lamps.
Implementation Method 1
a rectifier circuit unit (22) converting an AC input voltage into a DC output voltage
Implementation Method 2
a variable inductance unit (50, 60) having a different inductance value according to a magnitude of the DC output voltage
Data Source
AI summary
An LED lamp 20 according to one embodiment of the present invention includes a pair of input terminal parts 20a, 20c, a rectifier circuit unit 22, and an LED unit 24. And the LED lamp 20 has variable inductance units L50, L60 for causing an AC to flow from one of the pair of input terminal parts 20a, 20c to the other input terminal part through the rectifier circuit unit 22, a current detection unit 31 for detecting a magnitude of a DC flowing through the LED unit 24, and an inductance variable control unit 32 for making inductance values of the variable inductance units L50, L60 variable according to the magnitude of the DC detected by the current detection unit 31.